mirror of https://gitee.com/openkylin/linux.git
420 Commits
| Author | SHA1 | Message | Date |
|---|---|---|---|
Jonathan Corbet
|
5f6654094f |
Linux 4.18-rc3
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAls5Xh8eHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGGB4H/3zJ73feDP9uUABk 92tGQbc9PEtrkpOhACBUzVIIxMePgfqFZ+xF9KXwL9fzf+PEJrj9ILZlZ2XxNblN CO1U95+9nFntGF88DK3h5Hmkn/Kc8kwrbzjax9yvVKfIDX6HwtVUh49BuV7yKza8 ntwzu6ONCqSdDoCRubGxAAoZXGPpznG6FgRpsIVCHxv2Pu/YpQ2vdn9+vHandjAR gvYnBv4Z06OZU65ABIZ4ivr1SExhSxz6yoZAjSUQvBh6bcKDOVTtTQcdndp5Rzm2 nvuEioKuvyamRswp7LBCIfWs1TSEi6qsUrdcVWNEdwkA164VHqBRfyX176g65v3S a0df6n4= =aK8y -----END PGP SIGNATURE----- Merge tag 'v4.18-rc3' into docs-next -rc1 broke the docs build due to changes in the e100/e1000 drivers; -rc3 got the fixes via the networking tree. Pull in -rc3 so that the docs tree can actually build the docs again. |
|
|
Thomas Gleixner
|
506a66f374 |
Revert "x86/apic: Ignore secondary threads if nosmt=force"
Dave Hansen reported, that it's outright dangerous to keep SMT siblings
disabled completely so they are stuck in the BIOS and wait for SIPI.
The reason is that Machine Check Exceptions are broadcasted to siblings and
the soft disabled sibling has CR4.MCE = 0. If a MCE is delivered to a
logical core with CR4.MCE = 0, it asserts IERR#, which shuts down or
reboots the machine. The MCE chapter in the SDM contains the following
blurb:
Because the logical processors within a physical package are tightly
coupled with respect to shared hardware resources, both logical
processors are notified of machine check errors that occur within a
given physical processor. If machine-check exceptions are enabled when
a fatal error is reported, all the logical processors within a physical
package are dispatched to the machine-check exception handler. If
machine-check exceptions are disabled, the logical processors enter the
shutdown state and assert the IERR# signal. When enabling machine-check
exceptions, the MCE flag in control register CR4 should be set for each
logical processor.
Reverting the commit which ignores siblings at enumeration time solves only
half of the problem. The core cpuhotplug logic needs to be adjusted as
well.
This thoughtful engineered mechanism also turns the boot process on all
Intel HT enabled systems into a MCE lottery. MCE is enabled on the boot CPU
before the secondary CPUs are brought up. Depending on the number of
physical cores the window in which this situation can happen is smaller or
larger. On a HSW-EX it's about 750ms:
MCE is enabled on the boot CPU:
[ 0.244017] mce: CPU supports 22 MCE banks
The corresponding sibling #72 boots:
[ 1.008005] .... node #0, CPUs: #72
That means if an MCE hits on physical core 0 (logical CPUs 0 and 72)
between these two points the machine is going to shutdown. At least it's a
known safe state.
It's obvious that the early boot can be hit by an MCE as well and then runs
into the same situation because MCEs are not yet enabled on the boot CPU.
But after enabling them on the boot CPU, it does not make any sense to
prevent the kernel from recovering.
Adjust the nosmt kernel parameter documentation as well.
Reverts:
|
|
|
Sinan Kaya
|
11eb0e0e8d |
PCI: Make early dump functionality generic
Move early dump functionality into common code so that it is available for all architectures. No need to carry arch-specific reads around as the read hooks are already initialized by the time pci_setup_device() is getting called during scan. Tested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> |
|
|
Michael Rodin
|
351f10a3ce |
Documentation/admin-guide/README.rst: add a label for cross-referencing
Add a label to the top of the file to allow cross-referencing. Currently it's not possible to cross-reference this file from Documentation/process/howto.rst because of the missing label. Signed-off-by: Michael Rodin <michael-git@rodin.online> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Rafael J. Wysocki
|
649f53a3e4 |
Documentation: intel_pstate: Describe hwp_dynamic_boost sysfs knob
Document the recently introduced hwp_dynamic_boost sysfs knob allowing user space to tell intel_pstate to use iowait boosting in the active mode with HWP enabled (to improve performance). Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> |
|
|
Rafael J. Wysocki
|
9e421b8fff |
Documentation: admin-guide: intel_pstate: Fix sysfs path
Fix an incorrect sysfs path in the intel_pstate admin-guide
documentation.
Fixes:
|
|
|
Thomas Gleixner
|
05736e4ac1 |
cpu/hotplug: Provide knobs to control SMT
Provide a command line and a sysfs knob to control SMT. The command line options are: 'nosmt': Enumerate secondary threads, but do not online them 'nosmt=force': Ignore secondary threads completely during enumeration via MP table and ACPI/MADT. The sysfs control file has the following states (read/write): 'on': SMT is enabled. Secondary threads can be freely onlined 'off': SMT is disabled. Secondary threads, even if enumerated cannot be onlined 'forceoff': SMT is permanentely disabled. Writes to the control file are rejected. 'notsupported': SMT is not supported by the CPU The command line option 'nosmt' sets the sysfs control to 'off'. This can be changed to 'on' to reenable SMT during runtime. The command line option 'nosmt=force' sets the sysfs control to 'forceoff'. This cannot be changed during runtime. When SMT is 'on' and the control file is changed to 'off' then all online secondary threads are offlined and attempts to online a secondary thread later on are rejected. When SMT is 'off' and the control file is changed to 'on' then secondary threads can be onlined again. The 'off' -> 'on' transition does not automatically online the secondary threads. When the control file is set to 'forceoff', the behaviour is the same as setting it to 'off', but the operation is irreversible and later writes to the control file are rejected. When the control status is 'notsupported' then writes to the control file are rejected. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> |
|
|
Rafael J. Wysocki
|
7a0f9d1eb5 |
Documentation: intel_pstate: Fix typo
Fix a typo in the intel_pstate admin-guide documentation. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
|
|
Mauro Carvalho Chehab
|
1ca2c806d8 |
kernel-parameters.txt: fix pointers to sound parameters
The alsa parameters file was renamed to alsa-configuration.rst. With regards to OSS, it got retired as a hole by at changeset |
|
|
Mauro Carvalho Chehab
|
5fb94e9ca3 |
docs: Fix some broken references
As we move stuff around, some doc references are broken. Fix some of them via this script: ./scripts/documentation-file-ref-check --fix Manually checked if the produced result is valid, removing a few false-positives. Acked-by: Takashi Iwai <tiwai@suse.de> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Stephen Boyd <sboyd@kernel.org> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Coly Li <colyli@suse.de> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Linus Torvalds
|
463f202172 |
+ Features
- add support for mapping secids and using secctxes - add the ability to get a task's secid - add support for audit rule filtering + Cleanups - multiple typo fixes - Convert to use match_string() helper - update git and wiki locations in AppArmor docs - improve get_buffers macro by using get_cpu_ptr - Use an IDR to allocate apparmor secids + Bug fixes - fix '*seclen' is never less than zero - fix mediation of prlimit - fix memory leak when deduping profile load - fix ptrace read check - fix memory leak of rule on error exit path -----BEGIN PGP SIGNATURE----- iQIcBAABCgAGBQJbIPxYAAoJEAUvNnAY1cPYVOQQAKfVO71Mk1U6zegWk8VJoiRy /wb3ZjMy9KCE5UWNPp0jyB3qzFpejZizycRwVS2k1l/SjugACxvq1fyZ85bzys10 pb8efsWU/Co4l45PfaHpoqCJYr3+3/PBPwSU9vb8ScEFnb95D+0d7KRgA6uIC7lE H/zbjot1AXGX0CVKmQkKXdi+Ldnbzqv7GtCzipKWDeD0JJqgOKu8NOnnAfJiSNs7 YlIhcr6K4nRxHJ6e8vxbYeogbBzmVWZwWHN8ViXj5Bbox93FRlkkSqxw8Ke8SmXi y/wQabMQMPZHr2SvQjvFD3cpBmKaMG9NktIjy/4tYcTbhZPNgx/wJSSzRiySFTiW hPbXWueI75P3Zepj4rRaXy0T68fQaj4k2lTItxkqGN1UOu8mibMlOkE6ZmllTKO7 xPvLgZL7/vYS0fKqJaikZbMhWTBtQD/w0ZwYzmT77umOgRHQvrGKi9nk49fIigOo aftf8VIjMBUND2JMWCQn1d33CJUXdONpW0aX6cr5Xxthnlz5+aa9Ki2s58BFMVI3 PSMhOr6kdpxrkemEnoVnFMohxRb+u046ecM5X5E2rMEbH3PHow5bzaXyTBHFAiYY rPn/sKNaXtw4hdMcnv9lmFKyObAdoBxY4bRKzrPTC66sIMncLYVzcSzWY6C3bMfm tuu+zmVF0v5JENrcwccQ =EVj2 -----END PGP SIGNATURE----- Merge tag 'apparmor-pr-2018-06-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor Pull AppArmor updates from John Johansen: "Features - add support for mapping secids and using secctxes - add the ability to get a task's secid - add support for audit rule filtering Cleanups: - multiple typo fixes - Convert to use match_string() helper - update git and wiki locations in AppArmor docs - improve get_buffers macro by using get_cpu_ptr - Use an IDR to allocate apparmor secids Bug fixes: - fix '*seclen' is never less than zero - fix mediation of prlimit - fix memory leak when deduping profile load - fix ptrace read check - fix memory leak of rule on error exit path" * tag 'apparmor-pr-2018-06-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor: (21 commits) apparmor: fix ptrace read check apparmor: fix memory leak when deduping profile load apparmor: fix mediation of prlimit apparmor: fixup secid map conversion to using IDR apparmor: Use an IDR to allocate apparmor secids apparmor: Fix memory leak of rule on error exit path apparmor: modify audit rule support to support profile stacks apparmor: Add support for audit rule filtering apparmor: update git and wiki locations in AppArmor docs apparmor: Convert to use match_string() helper apparmor: improve get_buffers macro by using get_cpu_ptr apparmor: fix '*seclen' is never less than zero apparmor: fix typo "preconfinement" apparmor: fix typo "independent" apparmor: fix typo "traverse" apparmor: fix typo "type" apparmor: fix typo "replace" apparmor: fix typo "comparison" apparmor: fix typo "loosen" apparmor: add the ability to get a task's secid ... |
|
|
Linus Torvalds
|
410feb75de |
arm64 updates for 4.18:
- Spectre v4 mitigation (Speculative Store Bypass Disable) support for
arm64 using SMC firmware call to set a hardware chicken bit
- ACPI PPTT (Processor Properties Topology Table) parsing support and
enable the feature for arm64
- Report signal frame size to user via auxv (AT_MINSIGSTKSZ). The
primary motivation is Scalable Vector Extensions which requires more
space on the signal frame than the currently defined MINSIGSTKSZ
- ARM perf patches: allow building arm-cci as module, demote dev_warn()
to dev_dbg() in arm-ccn event_init(), miscellaneous cleanups
- cmpwait() WFE optimisation to avoid some spurious wakeups
- L1_CACHE_BYTES reverted back to 64 (for performance reasons that have
to do with some network allocations) while keeping ARCH_DMA_MINALIGN
to 128. cache_line_size() returns the actual hardware Cache Writeback
Granule
- Turn LSE atomics on by default in Kconfig
- Kernel fault reporting tidying
- Some #include and miscellaneous cleanups
-----BEGIN PGP SIGNATURE-----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=uums
-----END PGP SIGNATURE-----
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"Apart from the core arm64 and perf changes, the Spectre v4 mitigation
touches the arm KVM code and the ACPI PPTT support touches drivers/
(acpi and cacheinfo). I should have the maintainers' acks in place.
Summary:
- Spectre v4 mitigation (Speculative Store Bypass Disable) support
for arm64 using SMC firmware call to set a hardware chicken bit
- ACPI PPTT (Processor Properties Topology Table) parsing support and
enable the feature for arm64
- Report signal frame size to user via auxv (AT_MINSIGSTKSZ). The
primary motivation is Scalable Vector Extensions which requires
more space on the signal frame than the currently defined
MINSIGSTKSZ
- ARM perf patches: allow building arm-cci as module, demote
dev_warn() to dev_dbg() in arm-ccn event_init(), miscellaneous
cleanups
- cmpwait() WFE optimisation to avoid some spurious wakeups
- L1_CACHE_BYTES reverted back to 64 (for performance reasons that
have to do with some network allocations) while keeping
ARCH_DMA_MINALIGN to 128. cache_line_size() returns the actual
hardware Cache Writeback Granule
- Turn LSE atomics on by default in Kconfig
- Kernel fault reporting tidying
- Some #include and miscellaneous cleanups"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (53 commits)
arm64: Fix syscall restarting around signal suppressed by tracer
arm64: topology: Avoid checking numa mask for scheduler MC selection
ACPI / PPTT: fix build when CONFIG_ACPI_PPTT is not enabled
arm64: cpu_errata: include required headers
arm64: KVM: Move VCPU_WORKAROUND_2_FLAG macros to the top of the file
arm64: signal: Report signal frame size to userspace via auxv
arm64/sve: Thin out initialisation sanity-checks for sve_max_vl
arm64: KVM: Add ARCH_WORKAROUND_2 discovery through ARCH_FEATURES_FUNC_ID
arm64: KVM: Handle guest's ARCH_WORKAROUND_2 requests
arm64: KVM: Add ARCH_WORKAROUND_2 support for guests
arm64: KVM: Add HYP per-cpu accessors
arm64: ssbd: Add prctl interface for per-thread mitigation
arm64: ssbd: Introduce thread flag to control userspace mitigation
arm64: ssbd: Restore mitigation status on CPU resume
arm64: ssbd: Skip apply_ssbd if not using dynamic mitigation
arm64: ssbd: Add global mitigation state accessor
arm64: Add 'ssbd' command-line option
arm64: Add ARCH_WORKAROUND_2 probing
arm64: Add per-cpu infrastructure to call ARCH_WORKAROUND_2
arm64: Call ARCH_WORKAROUND_2 on transitions between EL0 and EL1
...
|
|
|
Linus Torvalds
|
68abbe7295 |
Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton: - a few misc things - ocfs2 updates - v9fs updates - MM - procfs updates - lib/ updates - autofs updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits) autofs: small cleanup in autofs_getpath() autofs: clean up includes autofs: comment on selinux changes needed for module autoload autofs: update MAINTAINERS entry for autofs autofs: use autofs instead of autofs4 in documentation autofs: rename autofs documentation files autofs: create autofs Kconfig and Makefile autofs: delete fs/autofs4 source files autofs: update fs/autofs4/Makefile autofs: update fs/autofs4/Kconfig autofs: copy autofs4 to autofs autofs4: use autofs instead of autofs4 everywhere autofs4: merge auto_fs.h and auto_fs4.h fs/binfmt_misc.c: do not allow offset overflow checkpatch: improve patch recognition lib/ucs2_string.c: add MODULE_LICENSE() lib/mpi: headers cleanup lib/percpu_ida.c: use _irqsave() instead of local_irq_save() + spin_lock lib/idr.c: remove simple_ida_lock lib/bitmap.c: micro-optimization for __bitmap_complement() ... |
|
|
Tejun Heo
|
be09102b41 |
mm: memcg: allow lowering memory.swap.max below the current usage
Currently an attempt to set swap.max into a value lower than the actual swap usage fails, which causes configuration problems as there's no way of lowering the configuration below the current usage short of turning off swap entirely. This makes swap.max difficult to use and allows delegatees to lock the delegator out of reducing swap allocation. This patch updates swap_max_write() so that the limit can be lowered below the current usage. It doesn't implement active reclaiming of swap entries for the following reasons. * mem_cgroup_swap_full() already tells the swap machinary to aggressively reclaim swap entries if the usage is above 50% of limit, so simply lowering the limit automatically triggers gradual reclaim. * Forcing back swapped out pages is likely to heavily impact the workload and mess up the working set. Given that swap usually is a lot less valuable and less scarce, letting the existing usage dissipate over time through the above gradual reclaim and as they're falted back in is likely the better behavior. Link: http://lkml.kernel.org/r/20180523185041.GR1718769@devbig577.frc2.facebook.com Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Roman Gushchin <guro@fb.com> Acked-by: Rik van Riel <riel@surriel.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Shaohua Li <shli@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
|
|
Roman Gushchin
|
bf8d5d52ff |
memcg: introduce memory.min
Memory controller implements the memory.low best-effort memory protection mechanism, which works perfectly in many cases and allows protecting working sets of important workloads from sudden reclaim. But its semantics has a significant limitation: it works only as long as there is a supply of reclaimable memory. This makes it pretty useless against any sort of slow memory leaks or memory usage increases. This is especially true for swapless systems. If swap is enabled, memory soft protection effectively postpones problems, allowing a leaking application to fill all swap area, which makes no sense. The only effective way to guarantee the memory protection in this case is to invoke the OOM killer. It's possible to handle this case in userspace by reacting on MEMCG_LOW events; but there is still a place for a fail-safe in-kernel mechanism to provide stronger guarantees. This patch introduces the memory.min interface for cgroup v2 memory controller. It works very similarly to memory.low (sharing the same hierarchical behavior), except that it's not disabled if there is no more reclaimable memory in the system. If cgroup is not populated, its memory.min is ignored, because otherwise even the OOM killer wouldn't be able to reclaim the protected memory, and the system can stall. [guro@fb.com: s/low/min/ in docs] Link: http://lkml.kernel.org/r/20180510130758.GA9129@castle.DHCP.thefacebook.com Link: http://lkml.kernel.org/r/20180509180734.GA4856@castle.DHCP.thefacebook.com Signed-off-by: Roman Gushchin <guro@fb.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
|
|
Roman Gushchin
|
7854207fe9 |
mm/docs: describe memory.low refinements
Refine cgroup v2 docs after latest memory.low changes. Link: http://lkml.kernel.org/r/20180405185921.4942-4-guro@fb.com Signed-off-by: Roman Gushchin <guro@fb.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
|
|
Tejun Heo
|
f3a53a3a1e |
mm, memcontrol: implement memory.swap.events
Add swap max and fail events so that userland can monitor and respond to running out of swap. I'm not too sure about the fail event. Right now, it's a bit confusing which stats / events are recursive and which aren't and also which ones reflect events which originate from a given cgroup and which targets the cgroup. No idea what the right long term solution is and it could just be that growing them organically is actually the only right thing to do. Link: http://lkml.kernel.org/r/20180416231151.GI1911913@devbig577.frc2.facebook.com Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Roman Gushchin <guro@fb.com> Cc: Rik van Riel <riel@surriel.com> Cc: <linux-api@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
|
|
Linus Torvalds
|
3a3869f1c4 |
pci-v4.18-changes
-----BEGIN PGP SIGNATURE-----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=aFAi
-----END PGP SIGNATURE-----
Merge tag 'pci-v4.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- unify AER decoding for native and ACPI CPER sources (Alexandru
Gagniuc)
- add TLP header info to AER tracepoint (Thomas Tai)
- add generic pcie_wait_for_link() interface (Oza Pawandeep)
- handle AER ERR_FATAL by removing and re-enumerating devices, as
Downstream Port Containment does (Oza Pawandeep)
- factor out common code between AER and DPC recovery (Oza Pawandeep)
- stop triggering DPC for ERR_NONFATAL errors (Oza Pawandeep)
- share ERR_FATAL recovery path between AER and DPC (Oza Pawandeep)
- disable ASPM L1.2 substate if we don't have LTR (Bjorn Helgaas)
- respect platform ownership of LTR (Bjorn Helgaas)
- clear interrupt status in top half to avoid interrupt storm (Oza
Pawandeep)
- neaten pci=earlydump output (Andy Shevchenko)
- avoid errors when extended config space inaccessible (Gilles Buloz)
- prevent sysfs disable of device while driver attached (Christoph
Hellwig)
- use core interface to report PCIe link properties in bnx2x, bnxt_en,
cxgb4, ixgbe (Bjorn Helgaas)
- remove unused pcie_get_minimum_link() (Bjorn Helgaas)
- fix use-before-set error in ibmphp (Dan Carpenter)
- fix pciehp timeouts caused by Command Completed errata (Bjorn
Helgaas)
- fix refcounting in pnv_php hotplug (Julia Lawall)
- clear pciehp Presence Detect and Data Link Layer Status Changed on
resume so we don't miss hotplug events (Mika Westerberg)
- only request pciehp control if we support it, so platform can use
ACPI hotplug otherwise (Mika Westerberg)
- convert SHPC to be builtin only (Mika Westerberg)
- request SHPC control via _OSC if we support it (Mika Westerberg)
- simplify SHPC handoff from firmware (Mika Westerberg)
- fix an SHPC quirk that mistakenly included *all* AMD bridges as well
as devices from any vendor with device ID 0x7458 (Bjorn Helgaas)
- assign a bus number even to non-native hotplug bridges to leave
space for acpiphp additions, to fix a common Thunderbolt xHCI
hot-add failure (Mika Westerberg)
- keep acpiphp from scanning native hotplug bridges, to fix common
Thunderbolt hot-add failures (Mika Westerberg)
- improve "partially hidden behind bridge" messages from core (Mika
Westerberg)
- add macros for PCIe Link Control 2 register (Frederick Lawler)
- replace IB/hfi1 custom macros with PCI core versions (Frederick
Lawler)
- remove dead microblaze and xtensa code (Bjorn Helgaas)
- use dev_printk() when possible in xtensa and mips (Bjorn Helgaas)
- remove unused pcie_port_acpi_setup() and portdrv_acpi.c (Bjorn
Helgaas)
- add managed interface to get PCI host bridge resources from OF (Jan
Kiszka)
- add support for unbinding generic PCI host controller (Jan Kiszka)
- fix memory leaks when unbinding generic PCI host controller (Jan
Kiszka)
- request legacy VGA framebuffer only for VGA devices to avoid false
device conflicts (Bjorn Helgaas)
- turn on PCI_COMMAND_IO & PCI_COMMAND_MEMORY in pci_enable_device()
like everybody else, not in pcibios_fixup_bus() (Bjorn Helgaas)
- add generic enable function for simple SR-IOV hardware (Alexander
Duyck)
- use generic SR-IOV enable for ena, nvme (Alexander Duyck)
- add ACS quirk for Intel 7th & 8th Gen mobile (Alex Williamson)
- add ACS quirk for Intel 300 series (Mika Westerberg)
- enable register clock for Armada 7K/8K (Gregory CLEMENT)
- reduce Keystone "link already up" log level (Fabio Estevam)
- move private DT functions to drivers/pci/ (Rob Herring)
- factor out dwc CONFIG_PCI Kconfig dependencies (Rob Herring)
- add DesignWare support to the endpoint test driver (Gustavo
Pimentel)
- add DesignWare support for endpoint mode (Gustavo Pimentel)
- use devm_ioremap_resource() instead of devm_ioremap() in dra7xx and
artpec6 (Gustavo Pimentel)
- fix Qualcomm bitwise NOT issue (Dan Carpenter)
- add Qualcomm runtime PM support (Srinivas Kandagatla)
- fix DesignWare enumeration below bridges (Koen Vandeputte)
- use usleep() instead of mdelay() in endpoint test (Jia-Ju Bai)
- add configfs entries for pci_epf_driver device IDs (Kishon Vijay
Abraham I)
- clean up pci_endpoint_test driver (Gustavo Pimentel)
- update Layerscape maintainer email addresses (Minghuan Lian)
- add COMPILE_TEST to improve build test coverage (Rob Herring)
- fix Hyper-V bus registration failure caused by domain/serial number
confusion (Sridhar Pitchai)
- improve Hyper-V refcounting and coding style (Stephen Hemminger)
- avoid potential Hyper-V hang waiting for a response that will never
come (Dexuan Cui)
- implement Mediatek chained IRQ handling (Honghui Zhang)
- fix vendor ID & class type for Mediatek MT7622 (Honghui Zhang)
- add Mobiveil PCIe host controller driver (Subrahmanya Lingappa)
- add Mobiveil MSI support (Subrahmanya Lingappa)
- clean up clocks, MSI, IRQ mappings in R-Car probe failure paths
(Marek Vasut)
- poll more frequently (5us vs 5ms) while waiting for R-Car data link
active (Marek Vasut)
- use generic OF parsing interface in R-Car (Vladimir Zapolskiy)
- add R-Car V3H (R8A77980) "compatible" string (Sergei Shtylyov)
- add R-Car gen3 PHY support (Sergei Shtylyov)
- improve R-Car PHYRDY polling (Sergei Shtylyov)
- clean up R-Car macros (Marek Vasut)
- use runtime PM for R-Car controller clock (Dien Pham)
- update arm64 defconfig for Rockchip (Shawn Lin)
- refactor Rockchip code to facilitate both root port and endpoint
mode (Shawn Lin)
- add Rockchip endpoint mode driver (Shawn Lin)
- support VMD "membar shadow" feature (Jon Derrick)
- support VMD bus number offsets (Jon Derrick)
- add VMD "no AER source ID" quirk for more device IDs (Jon Derrick)
- remove unnecessary host controller CONFIG_PCIEPORTBUS Kconfig
selections (Bjorn Helgaas)
- clean up quirks.c organization and whitespace (Bjorn Helgaas)
* tag 'pci-v4.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (144 commits)
PCI/AER: Replace struct pcie_device with pci_dev
PCI/AER: Remove unused parameters
PCI: qcom: Include gpio/consumer.h
PCI: Improve "partially hidden behind bridge" log message
PCI: Improve pci_scan_bridge() and pci_scan_bridge_extend() doc
PCI: Move resource distribution for single bridge outside loop
PCI: Account for all bridges on bus when distributing bus numbers
ACPI / hotplug / PCI: Drop unnecessary parentheses
ACPI / hotplug / PCI: Mark stale PCI devices disconnected
ACPI / hotplug / PCI: Don't scan bridges managed by native hotplug
PCI: hotplug: Add hotplug_is_native()
PCI: shpchp: Add shpchp_is_native()
PCI: shpchp: Fix AMD POGO identification
PCI: mobiveil: Add MSI support
PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver
PCI/AER: Decode Error Source Requester ID
PCI/AER: Remove aer_recover_work_func() forward declaration
PCI/DPC: Use the generic pcie_do_fatal_recovery() path
PCI/AER: Pass service type to pcie_do_fatal_recovery()
PCI/DPC: Disable ERR_NONFATAL handling by DPC
...
|
|
|
Jordan Glover
|
b896c54e8d |
apparmor: update git and wiki locations in AppArmor docs
The apparmor information in the apparmor.rst file is out of date. Update it to the correct git reference for the master apparmor tree. Update the wiki location to use apparmor.net which forwards to the current wiki location on gitlab.com. Update user space tools address to gitlab.com. Signed-off-by: Jordan Glover <Golden_Miller83@protonmail.ch> Signed-off-by: John Johansen <john.johansen@canonical.com> |
|
|
Linus Torvalds
|
a22e48cf31 |
TTY/Serial patches for 4.18-rc1
Here is the big tty/serial driver update for 4.18-rc1.
There's nothing major here, just lots of serial driver updates. Full
details are in the shortlog, nothing anything specific to call out here.
All have been in linux-next for a while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCWxbZzQ8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ym2pQCggrWJsOeXLXgzhVDH6/qMFP9R/hEAoLTvmOWQ
BlPIlvRDm/ud33VogJ8t
=XS8u
-----END PGP SIGNATURE-----
Merge tag 'tty-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial updates from Greg KH:
"Here is the big tty/serial driver update for 4.18-rc1.
There's nothing major here, just lots of serial driver updates. Full
details are in the shortlog, nothing anything specific to call out
here.
All have been in linux-next for a while with no reported issues"
* tag 'tty-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (55 commits)
vt: Perform safe console erase only once
serial: imx: disable UCR4_OREN on shutdown
serial: imx: drop CTS/RTS handling from shutdown
tty: fix typo in ASYNCB_FOURPORT comment
serial: samsung: check DMA engine capabilities before using DMA mode
tty: Fix data race in tty_insert_flip_string_fixed_flag
tty: serial: msm_geni_serial: Fix TX infinite loop
serial: 8250_dw: Fix runtime PM handling
serial: 8250: omap: Fix idling of clocks for unused uarts
tty: serial: drop ATH79 specific SoC symbols
serial: 8250: Add missing rxtrig_bytes on Altera 16550 UART
serial/aspeed-vuart: fix a couple mod_timer() calls
serial: sh-sci: Use spin_{try}lock_irqsave instead of open coding version
serial: 8250_of: Add IO space support
tty/serial: atmel: use port->name as name in request_irq()
serial: imx: dma_unmap_sg buffers on shutdown
serial: imx: cleanup imx_uart_disable_dma()
tty: serial: qcom_geni_serial: Add early console support
tty: serial: qcom_geni_serial: Return IRQ_NONE for spurious interrupts
tty: serial: qcom_geni_serial: Use iowrite32_rep to write to FIFO
...
|
|
|
Linus Torvalds
|
8316385687 |
Merge branch 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 debug updates from Ingo Molnar: "This contains the x86 oops code printing reorganization and cleanups from Borislav Betkov, with a particular focus in enhancing opcode dumping all around" * 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/dumpstack: Explain the reasoning for the prologue and buffer size x86/dumpstack: Save first regs set for the executive summary x86/dumpstack: Add a show_ip() function x86/fault: Dump user opcode bytes on fatal faults x86/dumpstack: Add loglevel argument to show_opcodes() x86/dumpstack: Improve opcodes dumping in the code section x86/dumpstack: Carve out code-dumping into a function x86/dumpstack: Unexport oops_begin() x86/dumpstack: Remove code_bytes |
|
|
Linus Torvalds
|
5cef8c2a22 |
Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 boot updates from Ingo Molnar: - Centaur CPU updates (David Wang) - AMD and other CPU topology enumeration improvements and fixes (Borislav Petkov, Thomas Gleixner, Suravee Suthikulpanit) - Continued 5-level paging work (Kirill A. Shutemov) * 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Mark __pgtable_l5_enabled __initdata x86/mm: Mark p4d_offset() __always_inline x86/mm: Introduce the 'no5lvl' kernel parameter x86/mm: Stop pretending pgtable_l5_enabled is a variable x86/mm: Unify pgtable_l5_enabled usage in early boot code x86/boot/compressed/64: Fix trampoline page table address calculation x86/CPU: Move x86_cpuinfo::x86_max_cores assignment to detect_num_cpu_cores() x86/Centaur: Report correct CPU/cache topology x86/CPU: Move cpu_detect_cache_sizes() into init_intel_cacheinfo() x86/CPU: Make intel_num_cpu_cores() generic x86/CPU: Move cpu local function declarations to local header x86/CPU/AMD: Derive CPU topology from CPUID function 0xB when available x86/CPU: Modify detect_extended_topology() to return result x86/CPU/AMD: Calculate last level cache ID from number of sharing threads x86/CPU: Rename intel_cacheinfo.c to cacheinfo.c perf/events/amd/uncore: Fix amd_uncore_llc ID to use pre-defined cpu_llc_id x86/CPU/AMD: Have smp_num_siblings and cpu_llc_id always be present x86/Centaur: Initialize supported CPU features properly |
|
|
Linus Torvalds
|
eeee3149aa |
There's been a fair amount of work in the docs tree this time around,
including:
- Extensive RST conversions and organizational work in the
memory-management docs thanks to Mike Rapoport.
- An update of Documentation/features from Andrea Parri and a script to
keep it updated.
- Various LICENSES updates from Thomas, along with a script to check SPDX
tags.
- Work to fix dangling references to documentation files; this involved a
fair number of one-liner comment changes outside of Documentation/
...and the usual list of documentation improvements, typo fixes, etc.
-----BEGIN PGP SIGNATURE-----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=I6FG
-----END PGP SIGNATURE-----
Merge tag 'docs-4.18' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"There's been a fair amount of work in the docs tree this time around,
including:
- Extensive RST conversions and organizational work in the
memory-management docs thanks to Mike Rapoport.
- An update of Documentation/features from Andrea Parri and a script
to keep it updated.
- Various LICENSES updates from Thomas, along with a script to check
SPDX tags.
- Work to fix dangling references to documentation files; this
involved a fair number of one-liner comment changes outside of
Documentation/
... and the usual list of documentation improvements, typo fixes, etc"
* tag 'docs-4.18' of git://git.lwn.net/linux: (103 commits)
Documentation: document hung_task_panic kernel parameter
docs/admin-guide/mm: add high level concepts overview
docs/vm: move ksm and transhuge from "user" to "internals" section.
docs: Use the kerneldoc comments for memalloc_no*()
doc: document scope NOFS, NOIO APIs
docs: update kernel versions and dates in tables
docs/vm: transhuge: split userspace bits to admin-guide/mm/transhuge
docs/vm: transhuge: minor updates
docs/vm: transhuge: change sections order
Documentation: arm: clean up Marvell Berlin family info
Documentation: gpio: driver: Fix a typo and some odd grammar
docs: ranoops.rst: fix location of ramoops.txt
scripts/documentation-file-ref-check: rewrite it in perl with auto-fix mode
docs: uio-howto.rst: use a code block to solve a warning
mm, THP, doc: Add document for thp_swpout/thp_swpout_fallback
w1: w1_io.c: fix a kernel-doc warning
Documentation/process/posting: wrap text at 80 cols
docs: admin-guide: add cgroup-v2 documentation
Revert "Documentation/features/vm: Remove arch support status file for 'pte_special'"
Documentation: refcount-vs-atomic: Update reference to LKMM doc.
...
|
|
|
Linus Torvalds
|
e5a594643a |
dma-mapping updates for 4.18:
- replaceme the force_dma flag with a dma_configure bus method.
(Nipun Gupta, although one patch is іncorrectly attributed to me
due to a git rebase bug)
- use GFP_DMA32 more agressively in dma-direct. (Takashi Iwai)
- remove PCI_DMA_BUS_IS_PHYS and rely on the dma-mapping API to do the
right thing for bounce buffering.
- move dma-debug initialization to common code, and apply a few cleanups
to the dma-debug code.
- cleanup the Kconfig mess around swiotlb selection
- swiotlb comment fixup (Yisheng Xie)
- a trivial swiotlb fix. (Dan Carpenter)
- support swiotlb on RISC-V. (based on a patch from Palmer Dabbelt)
- add a new generic dma-noncoherent dma_map_ops implementation and use
it for arc, c6x and nds32.
- improve scatterlist validity checking in dma-debug. (Robin Murphy)
- add a struct device quirk to limit the dma-mask to 32-bit due to
bridge/system issues, and switch x86 to use it instead of a local
hack for VIA bridges.
- handle devices without a dma_mask more gracefully in the dma-direct
code.
-----BEGIN PGP SIGNATURE-----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=6Acj
-----END PGP SIGNATURE-----
Merge tag 'dma-mapping-4.18' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig:
- replace the force_dma flag with a dma_configure bus method. (Nipun
Gupta, although one patch is іncorrectly attributed to me due to a
git rebase bug)
- use GFP_DMA32 more agressively in dma-direct. (Takashi Iwai)
- remove PCI_DMA_BUS_IS_PHYS and rely on the dma-mapping API to do the
right thing for bounce buffering.
- move dma-debug initialization to common code, and apply a few
cleanups to the dma-debug code.
- cleanup the Kconfig mess around swiotlb selection
- swiotlb comment fixup (Yisheng Xie)
- a trivial swiotlb fix. (Dan Carpenter)
- support swiotlb on RISC-V. (based on a patch from Palmer Dabbelt)
- add a new generic dma-noncoherent dma_map_ops implementation and use
it for arc, c6x and nds32.
- improve scatterlist validity checking in dma-debug. (Robin Murphy)
- add a struct device quirk to limit the dma-mask to 32-bit due to
bridge/system issues, and switch x86 to use it instead of a local
hack for VIA bridges.
- handle devices without a dma_mask more gracefully in the dma-direct
code.
* tag 'dma-mapping-4.18' of git://git.infradead.org/users/hch/dma-mapping: (48 commits)
dma-direct: don't crash on device without dma_mask
nds32: use generic dma_noncoherent_ops
nds32: implement the unmap_sg DMA operation
nds32: consolidate DMA cache maintainance routines
x86/pci-dma: switch the VIA 32-bit DMA quirk to use the struct device flag
x86/pci-dma: remove the explicit nodac and allowdac option
x86/pci-dma: remove the experimental forcesac boot option
Documentation/x86: remove a stray reference to pci-nommu.c
core, dma-direct: add a flag 32-bit dma limits
dma-mapping: remove unused gfp_t parameter to arch_dma_alloc_attrs
dma-debug: check scatterlist segments
c6x: use generic dma_noncoherent_ops
arc: use generic dma_noncoherent_ops
arc: fix arc_dma_{map,unmap}_page
arc: fix arc_dma_sync_sg_for_{cpu,device}
arc: simplify arc_dma_sync_single_for_{cpu,device}
dma-mapping: provide a generic dma-noncoherent implementation
dma-mapping: simplify Kconfig dependencies
riscv: add swiotlb support
riscv: only enable ZONE_DMA32 for 64-bit
...
|
|
|
Marc Zyngier
|
a43ae4dfe5 |
arm64: Add 'ssbd' command-line option
On a system where the firmware implements ARCH_WORKAROUND_2, it may be useful to either permanently enable or disable the workaround for cases where the user decides that they'd rather not get a trap overhead, and keep the mitigation permanently on or off instead of switching it on exception entry/exit. In any case, default to the mitigation being enabled. Reviewed-by: Julien Grall <julien.grall@arm.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
|
|
Omar Sandoval
|
a49d9c0ae4 |
Documentation: document hung_task_panic kernel parameter
This parameter has been around since commit
|
|
|
Mike Rapoport
|
f462951e87 |
docs/admin-guide/mm: add high level concepts overview
The are terms that seem obvious to the mm developers, but may be somewhat obscure for, say, less involved readers. The concepts overview can be seen as an "extended glossary" that introduces such terms to the readers of the kernel documentation. Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Christoph Hellwig
|
06e9552f5f |
x86/pci-dma: remove the experimental forcesac boot option
Limiting the dma mask to avoid PCI (pre-PCIe) DAC cycles while paying the huge overhead of an IOMMU is rather pointless, and this seriously gets in the way of dma mapping work. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> |
|
|
Linus Torvalds
|
3b78ce4a34 |
Merge branch 'speck-v20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Merge speculative store buffer bypass fixes from Thomas Gleixner:
- rework of the SPEC_CTRL MSR management to accomodate the new fancy
SSBD (Speculative Store Bypass Disable) bit handling.
- the CPU bug and sysfs infrastructure for the exciting new Speculative
Store Bypass 'feature'.
- support for disabling SSB via LS_CFG MSR on AMD CPUs including
Hyperthread synchronization on ZEN.
- PRCTL support for dynamic runtime control of SSB
- SECCOMP integration to automatically disable SSB for sandboxed
processes with a filter flag for opt-out.
- KVM integration to allow guests fiddling with SSBD including the new
software MSR VIRT_SPEC_CTRL to handle the LS_CFG based oddities on
AMD.
- BPF protection against SSB
.. this is just the core and x86 side, other architecture support will
come separately.
* 'speck-v20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (49 commits)
bpf: Prevent memory disambiguation attack
x86/bugs: Rename SSBD_NO to SSB_NO
KVM: SVM: Implement VIRT_SPEC_CTRL support for SSBD
x86/speculation, KVM: Implement support for VIRT_SPEC_CTRL/LS_CFG
x86/bugs: Rework spec_ctrl base and mask logic
x86/bugs: Remove x86_spec_ctrl_set()
x86/bugs: Expose x86_spec_ctrl_base directly
x86/bugs: Unify x86_spec_ctrl_{set_guest,restore_host}
x86/speculation: Rework speculative_store_bypass_update()
x86/speculation: Add virtualized speculative store bypass disable support
x86/bugs, KVM: Extend speculation control for VIRT_SPEC_CTRL
x86/speculation: Handle HT correctly on AMD
x86/cpufeatures: Add FEATURE_ZEN
x86/cpufeatures: Disentangle SSBD enumeration
x86/cpufeatures: Disentangle MSR_SPEC_CTRL enumeration from IBRS
x86/speculation: Use synthetic bits for IBRS/IBPB/STIBP
KVM: SVM: Move spec control call after restore of GS
x86/cpu: Make alternative_msr_write work for 32-bit code
x86/bugs: Fix the parameters alignment and missing void
x86/bugs: Make cpu_show_common() static
...
|
|
|
Mike Rapoport
|
45c9a74f64 |
docs/vm: transhuge: split userspace bits to admin-guide/mm/transhuge
Now that the administrative information for transparent huge pages is nicely separated, move it to its own page under the admin guide. Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Kirill A. Shutemov
|
372fddf709 |
x86/mm: Introduce the 'no5lvl' kernel parameter
This kernel parameter allows to force kernel to use 4-level paging even if hardware and kernel support 5-level paging. The option may be useful to work around regressions related to 5-level paging. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Cc: Hugh Dickins <hughd@google.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180518103528.59260-5-kirill.shutemov@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
|
Karthikeyan Ramasubramanian
|
43f1831b08 |
tty: serial: qcom_geni_serial: Add early console support
Add early console support in Qualcomm Technologies Inc., GENI based UART controller. Signed-off-by: Karthikeyan Ramasubramanian <kramasub@codeaurora.org> Signed-off-by: Girish Mahadevan <girishm@codeaurora.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
|
|
Gil Kupfer
|
cef74409ea |
PCI: Add "pci=noats" boot parameter
Adds a "pci=noats" boot parameter. When supplied, all ATS related functions fail immediately and the IOMMU is configured to not use device-IOTLB. Any function that checks for ATS capabilities directly against the devices should also check this flag. Currently, such functions exist only in IOMMU drivers, and they are covered by this patch. The motivation behind this patch is the existence of malicious devices. Lots of research has been done about how to use the IOMMU as protection from such devices. When ATS is supported, any I/O device can access any physical address by faking device-IOTLB entries. Adding the ability to ignore these entries lets sysadmins enhance system security. Signed-off-by: Gil Kupfer <gilkup@cs.technion.ac.il> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Joerg Roedel <jroedel@suse.de> |
|
|
Mauro Carvalho Chehab
|
b971a90f7d |
docs: ranoops.rst: fix location of ramoops.txt
The location of the dt bindings file is wrong: it was probably badly renamed by some script. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Mauro Carvalho Chehab
|
b6e9d06789 |
docs: admin-guide: add cgroup-v2 documentation
The cgroup-v2.txt is already in ReST format. So, move it to the admin-guide, where it belongs. Cc: Li Zefan <lizefan@huawei.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Juri Lelli
|
13610c9348 |
PM: docs: intel_pstate: fix Active Mode w/o HWP paragraph
P-state selection algorithm (powersave or performance) is selected by echoing the desired choice to scaling_governor sysfs attribute and not to scaling_cur_freq (as currently stated). Fix it. Signed-off-by: Juri Lelli <juri.lelli@redhat.com> Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
|
|
Jonathan Neuschäfer
|
c72a0ded8d |
PM: docs: sleep-states: Fix a typo ("includig")
Fix a typo in admin-guide/pm/sleep-states.rst. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
|
|
Mauro Carvalho Chehab
|
18bcaa4e61 |
docs: driver-api: add clk documentation
The clk.rst is already in ReST format. So, move it to the driver-api guide, where it belongs. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Mauro Carvalho Chehab
|
fe8703cc0d |
docs: admin-guide: add bcache documentation
The bcache.txt is already in ReST format. So, move it to the admin guide, where it belongs. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Mike Rapoport
|
3ecf53e41a |
docs/vm: move numa_memory_policy.rst to Documentation/admin-guide/mm
The document describes userspace API and as such it belongs to Documentation/admin-guide/mm Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Kees Cook
|
f21b53b20c |
x86/speculation: Make "seccomp" the default mode for Speculative Store Bypass
Unless explicitly opted out of, anything running under seccomp will have SSB mitigations enabled. Choosing the "prctl" mode will disable this. [ tglx: Adjusted it to the new arch_seccomp_spec_mitigate() mechanism ] Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
|
|
Thomas Gleixner
|
a73ec77ee1 |
x86/speculation: Add prctl for Speculative Store Bypass mitigation
Add prctl based control for Speculative Store Bypass mitigation and make it
the default mitigation for Intel and AMD.
Andi Kleen provided the following rationale (slightly redacted):
There are multiple levels of impact of Speculative Store Bypass:
1) JITed sandbox.
It cannot invoke system calls, but can do PRIME+PROBE and may have call
interfaces to other code
2) Native code process.
No protection inside the process at this level.
3) Kernel.
4) Between processes.
The prctl tries to protect against case (1) doing attacks.
If the untrusted code can do random system calls then control is already
lost in a much worse way. So there needs to be system call protection in
some way (using a JIT not allowing them or seccomp). Or rather if the
process can subvert its environment somehow to do the prctl it can already
execute arbitrary code, which is much worse than SSB.
To put it differently, the point of the prctl is to not allow JITed code
to read data it shouldn't read from its JITed sandbox. If it already has
escaped its sandbox then it can already read everything it wants in its
address space, and do much worse.
The ability to control Speculative Store Bypass allows to enable the
protection selectively without affecting overall system performance.
Based on an initial patch from Tim Chen. Completely rewritten.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
|
|
|
Konrad Rzeszutek Wilk
|
24f7fc83b9 |
x86/bugs: Provide boot parameters for the spec_store_bypass_disable mitigation
Contemporary high performance processors use a common industry-wide optimization known as "Speculative Store Bypass" in which loads from addresses to which a recent store has occurred may (speculatively) see an older value. Intel refers to this feature as "Memory Disambiguation" which is part of their "Smart Memory Access" capability. Memory Disambiguation can expose a cache side-channel attack against such speculatively read values. An attacker can create exploit code that allows them to read memory outside of a sandbox environment (for example, malicious JavaScript in a web page), or to perform more complex attacks against code running within the same privilege level, e.g. via the stack. As a first step to mitigate against such attacks, provide two boot command line control knobs: nospec_store_bypass_disable spec_store_bypass_disable=[off,auto,on] By default affected x86 processors will power on with Speculative Store Bypass enabled. Hence the provided kernel parameters are written from the point of view of whether to enable a mitigation or not. The parameters are as follows: - auto - Kernel detects whether your CPU model contains an implementation of Speculative Store Bypass and picks the most appropriate mitigation. - on - disable Speculative Store Bypass - off - enable Speculative Store Bypass [ tglx: Reordered the checks so that the whole evaluation is not done when the CPU does not support RDS ] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Borislav Petkov <bp@suse.de> Reviewed-by: Ingo Molnar <mingo@kernel.org> |
|
|
Mike Rapoport
|
c9161088e5 |
docs/vm: ksm: split userspace interface to admin-guide/mm/ksm.rst
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Mike Rapoport
|
e27a20f104 |
docs/admin-guide/mm: convert plain text cross references to hyperlinks
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Mike Rapoport
|
1ad1335dc5 |
docs/admin-guide/mm: start moving here files from Documentation/vm
Several documents in Documentation/vm fit quite well into the "admin/user guide" category. The documents that don't overload the reader with lots of implementation details and provide coherent description of certain feature can be moved to Documentation/admin-guide/mm. Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Mike Rapoport
|
3a3f7e26e5 |
docs/admin-guide: introduce basic index for mm documentation
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Thymo van Beers
|
6dddd7a7ec |
docs: kernel-parameters.txt: Fix whitespace
Some lines used spaces instead of tabs at line start. This can cause mangled lines in editors due to inconsistency. Replace spaces for tabs where appropriate. Signed-off-by: Thymo van Beers <thymovanbeers@gmail.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Borislav Petkov
|
5d12f0424e |
x86/dumpstack: Remove code_bytes
This was added by
|
|
|
Jonathan Corbet
|
24844fd339 |
Merge branch 'mm-rst' into docs-next
Mike Rapoport says: These patches convert files in Documentation/vm to ReST format, add an initial index and link it to the top level documentation. There are no contents changes in the documentation, except few spelling fixes. The relatively large diffstat stems from the indentation and paragraph wrapping changes. I've tried to keep the formatting as consistent as possible, but I could miss some places that needed markup and add some markup where it was not necessary. [jc: significant conflicts in vm/hmm.rst] |
|
|
Mike Rapoport
|
ad56b738c5 |
docs/vm: rename documentation files to .rst
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Linus Torvalds
|
d8312a3f61 |
ARM:
- VHE optimizations
- EL2 address space randomization
- speculative execution mitigations ("variant 3a", aka execution past invalid
privilege register access)
- bugfixes and cleanups
PPC:
- improvements for the radix page fault handler for HV KVM on POWER9
s390:
- more kvm stat counters
- virtio gpu plumbing
- documentation
- facilities improvements
x86:
- support for VMware magic I/O port and pseudo-PMCs
- AMD pause loop exiting
- support for AMD core performance extensions
- support for synchronous register access
- expose nVMX capabilities to userspace
- support for Hyper-V signaling via eventfd
- use Enlightened VMCS when running on Hyper-V
- allow userspace to disable MWAIT/HLT/PAUSE vmexits
- usual roundup of optimizations and nested virtualization bugfixes
Generic:
- API selftest infrastructure (though the only tests are for x86 as of now)
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)
iQEcBAABAgAGBQJay19UAAoJEL/70l94x66DGKYIAIu9PTHAEwaX0et15fPW5y2x
rrtS355lSAmMrPJ1nePRQ+rProD/1B0Kizj3/9O+B9OTKKRsorRYNa4CSu9neO2k
N3rdE46M1wHAPwuJPcYvh3iBVXtgbMayk1EK5aVoSXaMXEHh+PWZextkl+F+G853
kC27yDy30jj9pStwnEFSBszO9ua/URdKNKBATNx8WUP6d9U/dlfm5xv3Dc3WtKt2
UMGmog2wh0i7ecXo7hRkMK4R7OYP3ZxAexq5aa9BOPuFp+ZdzC/MVpN+jsjq2J/M
Zq6RNyA2HFyQeP0E9QgFsYS2BNOPeLZnT5Jg1z4jyiD32lAZ/iC51zwm4oNKcDM=
=bPlD
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"ARM:
- VHE optimizations
- EL2 address space randomization
- speculative execution mitigations ("variant 3a", aka execution past
invalid privilege register access)
- bugfixes and cleanups
PPC:
- improvements for the radix page fault handler for HV KVM on POWER9
s390:
- more kvm stat counters
- virtio gpu plumbing
- documentation
- facilities improvements
x86:
- support for VMware magic I/O port and pseudo-PMCs
- AMD pause loop exiting
- support for AMD core performance extensions
- support for synchronous register access
- expose nVMX capabilities to userspace
- support for Hyper-V signaling via eventfd
- use Enlightened VMCS when running on Hyper-V
- allow userspace to disable MWAIT/HLT/PAUSE vmexits
- usual roundup of optimizations and nested virtualization bugfixes
Generic:
- API selftest infrastructure (though the only tests are for x86 as
of now)"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (174 commits)
kvm: x86: fix a prototype warning
kvm: selftests: add sync_regs_test
kvm: selftests: add API testing infrastructure
kvm: x86: fix a compile warning
KVM: X86: Add Force Emulation Prefix for "emulate the next instruction"
KVM: X86: Introduce handle_ud()
KVM: vmx: unify adjacent #ifdefs
x86: kvm: hide the unused 'cpu' variable
KVM: VMX: remove bogus WARN_ON in handle_ept_misconfig
Revert "KVM: X86: Fix SMRAM accessing even if VM is shutdown"
kvm: Add emulation for movups/movupd
KVM: VMX: raise internal error for exception during invalid protected mode state
KVM: nVMX: Optimization: Dont set KVM_REQ_EVENT when VMExit with nested_run_pending
KVM: nVMX: Require immediate-exit when event reinjected to L2 and L1 event pending
KVM: x86: Fix misleading comments on handling pending exceptions
KVM: x86: Rename interrupt.pending to interrupt.injected
KVM: VMX: No need to clear pending NMI/interrupt on inject realmode interrupt
x86/kvm: use Enlightened VMCS when running on Hyper-V
x86/hyper-v: detect nested features
x86/hyper-v: define struct hv_enlightened_vmcs and clean field bits
...
|
|
|
Linus Torvalds
|
f8cf2f16a7 |
Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull integrity updates from James Morris:
"A mixture of bug fixes, code cleanup, and continues to close
IMA-measurement, IMA-appraisal, and IMA-audit gaps.
Also note the addition of a new cred_getsecid LSM hook by Matthew
Garrett:
For IMA purposes, we want to be able to obtain the prepared secid
in the bprm structure before the credentials are committed. Add a
cred_getsecid hook that makes this possible.
which is used by a new CREDS_CHECK target in IMA:
In ima_bprm_check(), check with both the existing process
credentials and the credentials that will be committed when the new
process is started. This will not change behaviour unless the
system policy is extended to include CREDS_CHECK targets -
BPRM_CHECK will continue to check the same credentials that it did
previously"
* 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
ima: Fallback to the builtin hash algorithm
ima: Add smackfs to the default appraise/measure list
evm: check for remount ro in progress before writing
ima: Improvements in ima_appraise_measurement()
ima: Simplify ima_eventsig_init()
integrity: Remove unused macro IMA_ACTION_RULE_FLAGS
ima: drop vla in ima_audit_measurement()
ima: Fix Kconfig to select TPM 2.0 CRB interface
evm: Constify *integrity_status_msg[]
evm: Move evm_hmac and evm_hash from evm_main.c to evm_crypto.c
fuse: define the filesystem as untrusted
ima: fail signature verification based on policy
ima: clear IMA_HASH
ima: re-evaluate files on privileged mounted filesystems
ima: fail file signature verification on non-init mounted filesystems
IMA: Support using new creds in appraisal policy
security: Add a cred_getsecid hook
|
|
|
Linus Torvalds
|
3c0d551e02 |
pci-v4.17-changes
-----BEGIN PGP SIGNATURE----- iQJIBAABCgAyFiEEgMe7l+5h9hnxdsnuWYigwDrT+vwFAlrHeY8UHGJoZWxnYWFz QGdvb2dsZS5jb20ACgkQWYigwDrT+vxhLRAAndV/0NDyWZU0eZNM6twri2SEFnF7 E4ar+YthxDxxJG4TLJbIA12jc5NgHZy4WuttDa6Jb99KreBXIHJFlNi/V/tme6zf +yXUuxWae7wJzBiaay57VqLGSc80gt/LTgjLa1siwQqjTbO3wSXR6JJXNaE9FtQ4 /jL61t8bD1Peb5cWTpt9p0hrnKI0/pHwASdReyFS4F/HDKdvpof7BxE/OU3HSxxA XKC2v6RjY4S93vkzvApDXQ+vhKquVRK7/ojyTXQUO/GIzcARprO7H4k62N4ar0x/ qbXLkR8IMkwA8ecsNmcL92ftb/cXoHfd+wdK8WpijqzF4kW4SdteVWbIhUzI0gbr 0gjDYIzjplvH3pZGv/qvx+8sFtAP95OdPjuAAW2qJ9TCVfmiS8naNFCvcxg87RhD gjyQD3If1X7F8wy309lhq7VNyRexTHgIMgTXHyFvuZMzn/Qe1huL2XCwDcEAg/OX AvU2iuSE5tWAh7gIUMF/aWi3uoeJUyyoru5ZR//gqdFfx9YxpSimO1UDXnpPi8SR Iz/jzHJc0aWGYdQ9l6HiSbJF3P/QQcWYs9igt0A7BRGB05SPdWCh7sSO70FJa8ME f4WID5/qEiaH26kiSRX4cUqpc8Amk8bT0DXw2OT57qy3JM0ZdV5ENQX11pSpr9hv uLEf0DU7AEmdvzQ= =T++R -----END PGP SIGNATURE----- Merge tag 'pci-v4.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: - move pci_uevent_ers() out of pci.h (Michael Ellerman) - skip ASPM common clock warning if BIOS already configured it (Sinan Kaya) - fix ASPM Coverity warning about threshold_ns (Gustavo A. R. Silva) - remove last user of pci_get_bus_and_slot() and the function itself (Sinan Kaya) - add decoding for 16 GT/s link speed (Jay Fang) - add interfaces to get max link speed and width (Tal Gilboa) - add pcie_bandwidth_capable() to compute max supported link bandwidth (Tal Gilboa) - add pcie_bandwidth_available() to compute bandwidth available to device (Tal Gilboa) - add pcie_print_link_status() to log link speed and whether it's limited (Tal Gilboa) - use PCI core interfaces to report when device performance may be limited by its slot instead of doing it in each driver (Tal Gilboa) - fix possible cpqphp NULL pointer dereference (Shawn Lin) - rescan more of the hierarchy on ACPI hotplug to fix Thunderbolt/xHCI hotplug (Mika Westerberg) - add support for PCI I/O port space that's neither directly accessible via CPU in/out instructions nor directly mapped into CPU physical memory space. This is fairly intrusive and includes minor changes to interfaces used for I/O space on most platforms (Zhichang Yuan, John Garry) - add support for HiSilicon Hip06/Hip07 LPC I/O space (Zhichang Yuan, John Garry) - use PCI_EXP_DEVCTL2_COMP_TIMEOUT in rapidio/tsi721 (Bjorn Helgaas) - remove possible NULL pointer dereference in of_pci_bus_find_domain_nr() (Shawn Lin) - report quirk timings with dev_info (Bjorn Helgaas) - report quirks that take longer than 10ms (Bjorn Helgaas) - add and use Altera Vendor ID (Johannes Thumshirn) - tidy Makefiles and comments (Bjorn Helgaas) - don't set up INTx if MSI or MSI-X is enabled to align cris, frv, ia64, and mn10300 with x86 (Bjorn Helgaas) - move pcieport_if.h to drivers/pci/pcie/ to encapsulate it (Frederick Lawler) - merge pcieport_if.h into portdrv.h (Bjorn Helgaas) - move workaround for BIOS PME issue from portdrv to PCI core (Bjorn Helgaas) - completely disable portdrv with "pcie_ports=compat" (Bjorn Helgaas) - remove portdrv link order dependency (Bjorn Helgaas) - remove support for unused VC portdrv service (Bjorn Helgaas) - simplify portdrv feature permission checking (Bjorn Helgaas) - remove "pcie_hp=nomsi" parameter (use "pci=nomsi" instead) (Bjorn Helgaas) - remove unnecessary "pcie_ports=auto" parameter (Bjorn Helgaas) - use cached AER capability offset (Frederick Lawler) - don't enable DPC if BIOS hasn't granted AER control (Mika Westerberg) - rename pcie-dpc.c to dpc.c (Bjorn Helgaas) - use generic pci_mmap_resource_range() instead of powerpc and xtensa arch-specific versions (David Woodhouse) - support arbitrary PCI host bridge offsets on sparc (Yinghai Lu) - remove System and Video ROM reservations on sparc (Bjorn Helgaas) - probe for device reset support during enumeration instead of runtime (Bjorn Helgaas) - add ACS quirk for Ampere (née APM) root ports (Feng Kan) - add function 1 DMA alias quirk for Marvell 88SE9220 (Thomas Vincent-Cross) - protect device restore with device lock (Sinan Kaya) - handle failure of FLR gracefully (Sinan Kaya) - handle CRS (config retry status) after device resets (Sinan Kaya) - skip various config reads for SR-IOV VFs as an optimization (KarimAllah Ahmed) - consolidate VPD code in vpd.c (Bjorn Helgaas) - add Tegra dependency on PCI_MSI_IRQ_DOMAIN (Arnd Bergmann) - add DT support for R-Car r8a7743 (Biju Das) - fix a PCI_EJECT vs PCI_BUS_RELATIONS race condition in Hyper-V host bridge driver that causes a general protection fault (Dexuan Cui) - fix Hyper-V host bridge hang in MSI setup on 1-vCPU VMs with SR-IOV (Dexuan Cui) - fix Hyper-V host bridge hang when ejecting a VF before setting up MSI (Dexuan Cui) - make several structures static (Fengguang Wu) - increase number of MSI IRQs supported by Synopsys DesignWare bridges from 32 to 256 (Gustavo Pimentel) - implemented multiplexed IRQ domain API and remove obsolete MSI IRQ API from DesignWare drivers (Gustavo Pimentel) - add Tegra power management support (Manikanta Maddireddy) - add Tegra loadable module support (Manikanta Maddireddy) - handle 64-bit BARs correctly in endpoint support (Niklas Cassel) - support optional regulator for HiSilicon STB (Shawn Guo) - use regulator bulk API for Qualcomm apq8064 (Srinivas Kandagatla) - support power supplies for Qualcomm msm8996 (Srinivas Kandagatla) * tag 'pci-v4.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (123 commits) MAINTAINERS: Add John Garry as maintainer for HiSilicon LPC driver HISI LPC: Add ACPI support ACPI / scan: Do not enumerate Indirect IO host children ACPI / scan: Rename acpi_is_serial_bus_slave() for more general use HISI LPC: Support the LPC host on Hip06/Hip07 with DT bindings of: Add missing I/O range exception for indirect-IO devices PCI: Apply the new generic I/O management on PCI IO hosts PCI: Add fwnode handler as input param of pci_register_io_range() PCI: Remove __weak tag from pci_register_io_range() MAINTAINERS: Add missing /drivers/pci/cadence directory entry fm10k: Report PCIe link properties with pcie_print_link_status() net/mlx5e: Use pcie_bandwidth_available() to compute bandwidth net/mlx5: Report PCIe link properties with pcie_print_link_status() net/mlx4_core: Report PCIe link properties with pcie_print_link_status() PCI: Add pcie_print_link_status() to log link speed and whether it's limited PCI: Add pcie_bandwidth_available() to compute bandwidth available to device misc: pci_endpoint_test: Handle 64-bit BARs properly PCI: designware-ep: Make dw_pcie_ep_reset_bar() handle 64-bit BARs properly PCI: endpoint: Make sure that BAR_5 does not have 64-bit flag set when clearing PCI: endpoint: Make epc->ops->clear_bar()/pci_epc_clear_bar() take struct *epf_bar ... |
|
|
Linus Torvalds
|
6ad11bdd57 |
audit/stable-4.17 PR 20180403
-----BEGIN PGP SIGNATURE-----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=n1dk
-----END PGP SIGNATURE-----
Merge tag 'audit-pr-20180403' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit updates from Paul Moore:
"We didn't have anything to send for v4.16, but we're back with a
little more than usual for v4.17.
Eleven patches in total, most fall into the small fix category, but
there are three non-trivial changes worth calling out:
- the audit entry filter is being removed after deprecating it for
quite a while (years of no one really using it because it turns out
to be not very practical)
- created our own version of "__mutex_owner()" because the locking
folks were upset we were using theirs
- improved our handling of kernel command line parameters to make
them more forgiving
- we fixed auditing of symlink operations
Everything passes the audit-testsuite and as of a few minutes ago it
merges well with your tree"
* tag 'audit-pr-20180403' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
audit: add refused symlink to audit_names
audit: remove path param from link denied function
audit: link denied should not directly generate PATH record
audit: make ANOM_LINK obey audit_enabled and audit_dummy_context
audit: do not panic on invalid boot parameter
audit: track the owner of the command mutex ourselves
audit: return on memory error to avoid null pointer dereference
audit: bail before bug check if audit disabled
audit: deprecate the AUDIT_FILTER_ENTRY filter
audit: session ID should not set arch quick field pointer
audit: update bugtracker and source URIs
|
|
|
Linus Torvalds
|
3b54765cca |
Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton: - a few misc things - ocfs2 updates - the v9fs maintainers have been missing for a long time. I've taken over v9fs patch slinging. - most of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (116 commits) mm,oom_reaper: check for MMF_OOM_SKIP before complaining mm/ksm: fix interaction with THP mm/memblock.c: cast constant ULLONG_MAX to phys_addr_t headers: untangle kmemleak.h from mm.h include/linux/mmdebug.h: make VM_WARN* non-rvals mm/page_isolation.c: make start_isolate_page_range() fail if already isolated mm: change return type to vm_fault_t mm, oom: remove 3% bonus for CAP_SYS_ADMIN processes mm, page_alloc: wakeup kcompactd even if kswapd cannot free more memory kernel/fork.c: detect early free of a live mm mm: make counting of list_lru_one::nr_items lockless mm/swap_state.c: make bool enable_vma_readahead and swap_vma_readahead() static block_invalidatepage(): only release page if the full page was invalidated mm: kernel-doc: add missing parameter descriptions mm/swap.c: remove @cold parameter description for release_pages() mm/nommu: remove description of alloc_vm_area zram: drop max_zpage_size and use zs_huge_class_size() zsmalloc: introduce zs_huge_class_size() mm: fix races between swapoff and flush dcache fs/direct-io.c: minor cleanups in do_blockdev_direct_IO ... |
|
|
David Rientjes
|
a5c6d65093 |
mm, page_alloc: extend kernelcore and movablecore for percent
Both kernelcore= and movablecore= can be used to define the amount of ZONE_NORMAL and ZONE_MOVABLE on a system, respectively. This requires the system memory capacity to be known when specifying the command line, however. This introduces the ability to define both kernelcore= and movablecore= as a percentage of total system memory. This is convenient for systems software that wants to define the amount of ZONE_MOVABLE, for example, as a proportion of a system's memory rather than a hardcoded byte value. To define the percentage, the final character of the parameter should be a '%'. mhocko: "why is anyone using these options nowadays?" rientjes: : : Fragmentation of non-__GFP_MOVABLE pages due to low on memory : situations can pollute most pageblocks on the system, as much as 1GB of : slab being fragmented over 128GB of memory, for example. When the : amount of kernel memory is well bounded for certain systems, it is : better to aggressively reclaim from existing MIGRATE_UNMOVABLE : pageblocks rather than eagerly fallback to others. : : We have additional patches that help with this fragmentation if you're : interested, specifically kcompactd compaction of MIGRATE_UNMOVABLE : pageblocks triggered by fallback of non-__GFP_MOVABLE allocations and : draining of pcp lists back to the zone free area to prevent stranding. [rientjes@google.com: updates] Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1802131700160.71590@chino.kir.corp.google.com Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1802121622470.179479@chino.kir.corp.google.com Signed-off-by: David Rientjes <rientjes@google.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Mel Gorman <mgorman@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
|
|
Linus Torvalds
|
e8403b493f |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID updates from Jiri Kosina: - 3rd generation Wacom Intuos BT device support from Aaron Armstrong Skomra - support for NSG-MR5U and NSG-MR7U devices from Todd Kelner - multitouch Razer Blade Stealth support from Benjamin Tissoires - Elantech touchpad support from Alexandrov Stansilav - a few other scattered-around fixes and cleanups to drivers and generic code * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (31 commits) HID: google: Enable PM Full On mode when adjusting backlight HID: google: add google hammer HID driver HID: core: reset the quirks before calling probe again HID: multitouch: do not set HID_QUIRK_NO_INIT_REPORTS HID: core: remove the need for HID_QUIRK_NO_EMPTY_INPUT HID: use BIT() macro for quirks too HID: use BIT macro instead of plain integers for flags HID: multitouch: remove dead zones of Razer Blade Stealth HID: multitouch: export a quirk for the button handling of touchpads HID: usbhid: extend the polling interval configuration to keyboards HID: ntrig: document sysfs interface HID: wacom: wacom_wac_collection() is local to wacom_wac.c HID: wacom: generic: add the "Report Valid" usage HID: wacom: generic: Support multiple tools per report HID: wacom: Add support for 3rd generation Intuos BT HID: core: rewrite the hid-generic automatic unbind HID: sony: Add touchpad support for NSG-MR5U and NSG-MR7U remotes HID: hid-multitouch: Use true and false for boolean values HID: hid-ntrig: use true and false for boolean values HID: logitech-hidpp: document sysfs interface ... |
|
|
Linus Torvalds
|
06dd3dfeea |
Char/Misc patches for 4.17-rc1
Here is the big set of char/misc driver patches for 4.17-rc1.
There are a lot of little things in here, nothing huge, but all
important to the different hardware types involved:
- thunderbolt driver updates
- parport updates (people still care...)
- nvmem driver updates
- mei updates (as always)
- hwtracing driver updates
- hyperv driver updates
- extcon driver updates
- and a handfull of even smaller driver subsystem and individual
driver updates
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCWsShSQ8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ykNqwCfUbfvopswb1PesHCLABDBsFQChgoAniDa6pS9
kI8TN5MdLN85UU27Mkb6
=BzFR
-----END PGP SIGNATURE-----
Merge tag 'char-misc-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc updates from Greg KH:
"Here is the big set of char/misc driver patches for 4.17-rc1.
There are a lot of little things in here, nothing huge, but all
important to the different hardware types involved:
- thunderbolt driver updates
- parport updates (people still care...)
- nvmem driver updates
- mei updates (as always)
- hwtracing driver updates
- hyperv driver updates
- extcon driver updates
- ... and a handful of even smaller driver subsystem and individual
driver updates
All of these have been in linux-next with no reported issues"
* tag 'char-misc-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (149 commits)
hwtracing: Add HW tracing support menu
intel_th: Add ACPI glue layer
intel_th: Allow forcing host mode through drvdata
intel_th: Pick up irq number from resources
intel_th: Don't touch switch routing in host mode
intel_th: Use correct method of finding hub
intel_th: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate
stm class: Make dummy's master/channel ranges configurable
stm class: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate
MAINTAINERS: Bestow upon myself the care for drivers/hwtracing
hv: add SPDX license id to Kconfig
hv: add SPDX license to trace
Drivers: hv: vmbus: do not mark HV_PCIE as perf_device
Drivers: hv: vmbus: respect what we get from hv_get_synint_state()
/dev/mem: Avoid overwriting "err" in read_mem()
eeprom: at24: use SPDX identifier instead of GPL boiler-plate
eeprom: at24: simplify the i2c functionality checking
eeprom: at24: fix a line break
eeprom: at24: tweak newlines
eeprom: at24: refactor at24_probe()
...
|
|
|
Linus Torvalds
|
ac9053d2dc |
USB/PHY patches for 4.17-rc1
Here is the big set of USB and PHY driver patches for 4.17-rc1. Lots of USB typeC work happened this round, with code moving from the staging directory into the "real" part of the kernel, as well as new infrastructure being added to be able to handle the different types of "roles" that typeC requires. There is also the normal huge set of USB gadget controller and driver updates, along with XHCI changes, and a raft of other tiny fixes all over the USB tree. And the PHY driver updates are merged in here as well as they interacted with the USB drivers in some places. All of these have been in linux-next for a while with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCWsSpJw8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ylGawCdED2xS3HUxOIqfh81d8B1py8ji04AoJXdLAsH JgwXbdbibZBabYTVi5s5 =LrRH -----END PGP SIGNATURE----- Merge tag 'usb-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB/PHY updates from Greg KH: "Here is the big set of USB and PHY driver patches for 4.17-rc1. Lots of USB typeC work happened this round, with code moving from the staging directory into the "real" part of the kernel, as well as new infrastructure being added to be able to handle the different types of "roles" that typeC requires. There is also the normal huge set of USB gadget controller and driver updates, along with XHCI changes, and a raft of other tiny fixes all over the USB tree. And the PHY driver updates are merged in here as well as they interacted with the USB drivers in some places. All of these have been in linux-next for a while with no reported issues" * tag 'usb-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (250 commits) Revert "USB: serial: ftdi_sio: add Id for Physik Instrumente E-870" usb: musb: gadget: misplaced out of bounds check usb: chipidea: imx: Fix ULPI on imx53 usb: chipidea: imx: Cleanup ci_hdrc_imx_platform_flag usb: chipidea: usbmisc: small clean up usb: chipidea: usbmisc: evdo can be set e/o reset usb: chipidea: usbmisc: evdo is only specific to OTG port USB: serial: ftdi_sio: add Id for Physik Instrumente E-870 usb: dwc3: gadget: never call ->complete() from ->ep_queue() usb: gadget: udc: core: update usb_ep_queue() documentation usb: host: Remove the deprecated ATH79 USB host config options usb: roles: Fix return value check in intel_xhci_usb_probe() USB: gadget: f_midi: fixing a possible double-free in f_midi usb: core: Add USB_QUIRK_DELAY_CTRL_MSG to usbcore quirks usb: core: Copy parameter string correctly and remove superfluous null check USB: announce bcdDevice as well as idVendor, idProduct. USB:fix USB3 devices behind USB3 hubs not resuming at hibernate thaw usb: hub: Reduce warning to notice on power loss USB: serial: ftdi_sio: add support for Harman FirmwareHubEmulator USB: serial: cp210x: add ELDAT Easywave RX09 id ... |
|
|
Linus Torvalds
|
5b1f3dc927 |
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner:
"The usual pile of boring changes:
- Consolidate tasklet functions to share code instead of duplicating
it
- The first step for making the low level entry handler management on
multi-platform kernels generic
- A new sysfs file which allows to retrieve the wakeup state of
interrupts.
- Ensure that the interrupt thread follows the effective affinity and
not the programmed affinity to avoid cross core wakeups.
- Two new interrupt controller drivers (Microsemi Ocelot and Qualcomm
PDC)
- Fix the wakeup path clock handling for Reneasas interrupt chips.
- Rework the boot time register reset for ARM GIC-V2/3
- Better suspend/resume support for ARM GIV-V3/ITS
- Add missing locking to the ARM GIC set_type() callback
- Small fixes for the irq simulator code
- SPDX identifiers for the irq core code and removal of boiler plate
- Small cleanups all over the place"
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits)
openrisc: Set CONFIG_MULTI_IRQ_HANDLER
arm64: Set CONFIG_MULTI_IRQ_HANDLER
genirq: Make GENERIC_IRQ_MULTI_HANDLER depend on !MULTI_IRQ_HANDLER
irqchip/gic: Take lock when updating irq type
irqchip/gic: Update supports_deactivate static key to modern api
irqchip/gic-v3: Ensure GICR_CTLR.EnableLPI=0 is observed before enabling
irqchip: Add a driver for the Microsemi Ocelot controller
dt-bindings: interrupt-controller: Add binding for the Microsemi Ocelot interrupt controller
irqchip/gic-v3: Probe for SCR_EL3 being clear before resetting AP0Rn
irqchip/gic-v3: Don't try to reset AP0Rn
irqchip/gic-v3: Do not check trigger configuration of partitionned LPIs
genirq: Remove license boilerplate/references
genirq: Add missing SPDX identifiers
genirq/matrix: Cleanup SPDX identifier
genirq: Cleanup top of file comments
genirq: Pass desc to __irq_free instead of irq number
irqchip/gic-v3: Loudly complain about the use of IRQ_TYPE_NONE
irqchip/gic: Loudly complain about the use of IRQ_TYPE_NONE
RISC-V: Move to the new GENERIC_IRQ_MULTI_HANDLER handler
genirq: Add CONFIG_GENERIC_IRQ_MULTI_HANDLER
...
|
|
|
Linus Torvalds
|
bb2407a721 |
There's been a fair amount of activity in Documentation/ this time around:
- Lots of work aligning Documentation/ABI with reality, done by Aishwarya
Pant.
- The trace documentation has been converted to RST by Changbin Du
- I thrashed up kernel-doc to deal with a parsing issue and to try to make
the code more readable. It's still a 20+-year-old Perl hack, though.
- Lots of other updates, typo fixes, and more.
-----BEGIN PGP SIGNATURE-----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=QQ/a
-----END PGP SIGNATURE-----
Merge tag 'docs-4.17' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"There's been a fair amount of activity in Documentation/ this time
around:
- Lots of work aligning Documentation/ABI with reality, done by
Aishwarya Pant.
- The trace documentation has been converted to RST by Changbin Du
- I thrashed up kernel-doc to deal with a parsing issue and to try to
make the code more readable. It's still a 20+-year-old Perl hack,
though.
- Lots of other updates, typo fixes, and more"
* tag 'docs-4.17' of git://git.lwn.net/linux: (82 commits)
Documentation/process: update FUSE project website
docs: kernel-doc: fix parsing of arrays
dmaengine: Fix spelling for parenthesis in dmatest documentation
dmaengine: Make dmatest.rst indeed reST compatible
dmaengine: Add note to dmatest documentation about supported channels
Documentation: magic-numbers: Fix typo
Documentation: admin-guide: add kvmconfig, xenconfig and tinyconfig commands
Input: alps - Update documentation for trackstick v3 format
Documentation: Mention why %p prints ptrval
COPYING: use the new text with points to the license files
COPYING: create a new file with points to the Kernel license files
Input: trackpoint: document sysfs interface
xfs: Change URL for the project in xfs.txt
char/bsr: add sysfs interface documentation
acpi: nfit: document sysfs interface
block: rbd: update sysfs interface
Documentation/sparse: fix typo
Documentation/CodingStyle: Add an example for braces
docs/vm: update 00-INDEX
kernel-doc: Remove __sched markings
...
|
|
|
Linus Torvalds
|
f5a8eb632b |
arch: remove obsolete architecture ports
This removes the entire architecture code for blackfin, cris, frv, m32r, metag, mn10300, score, and tile, including the associated device drivers. I have been working with the (former) maintainers for each one to ensure that my interpretation was right and the code is definitely unused in mainline kernels. Many had fond memories of working on the respective ports to start with and getting them included in upstream, but also saw no point in keeping the port alive without any users. In the end, it seems that while the eight architectures are extremely different, they all suffered the same fate: There was one company in charge of an SoC line, a CPU microarchitecture and a software ecosystem, which was more costly than licensing newer off-the-shelf CPU cores from a third party (typically ARM, MIPS, or RISC-V). It seems that all the SoC product lines are still around, but have not used the custom CPU architectures for several years at this point. In contrast, CPU instruction sets that remain popular and have actively maintained kernel ports tend to all be used across multiple licensees. The removal came out of a discussion that is now documented at https://lwn.net/Articles/748074/. Unlike the original plans, I'm not marking any ports as deprecated but remove them all at once after I made sure that they are all unused. Some architectures (notably tile, mn10300, and blackfin) are still being shipped in products with old kernels, but those products will never be updated to newer kernel releases. After this series, we still have a few architectures without mainline gcc support: - unicore32 and hexagon both have very outdated gcc releases, but the maintainers promised to work on providing something newer. At least in case of hexagon, this will only be llvm, not gcc. - openrisc, risc-v and nds32 are still in the process of finishing their support or getting it added to mainline gcc in the first place. They all have patched gcc-7.3 ports that work to some degree, but complete upstream support won't happen before gcc-8.1. Csky posted their first kernel patch set last week, their situation will be similar. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJawdL2AAoJEGCrR//JCVInuH0P/RJAZh1nTD+TR34ZhJq2TBoo PgygwDU7Z2+tQVU+EZ453Gywz9/NMRFk1RWAZqrLix4ZtyIMvC6A1qfT2yH1Y7Fb Qh6tccQeLe4ezq5u4S/46R/fQXu3Txr92yVwzJJUuPyU0arF9rv5MmI8e6p7L1en yb74kSEaCe+/eMlsEj1Cc1dgthDNXGKIURHkRsILoweysCpesjiTg4qDcL+yTibV FP2wjVbniKESMKS6qL71tiT5sexvLsLwMNcGiHPj94qCIQuI7DLhLdBVsL5Su6gI sbtgv0dsq4auRYAbQdMaH1hFvu6WptsuttIbOMnz2Yegi2z28H8uVXkbk2WVLbqG ZESUwutGh8MzOL2RJ4jyyQq5sfo++CRGlfKjr6ImZRv03dv0pe/W85062cK5cKNs cgDDJjGRorOXW7dyU6jG2gRqODOQBObIv3w5efdq5OgzOWlbI4EC+Y5u1Z0JF/76 pSwtGXA6YhwC+9LLAlnVTHG+yOwuLmAICgoKcTbzTVDKA2YQZG/cYuQfI5S1wD8e X6urPx3Md2GCwLXQ9mzKBzKZUpu/Tuhx0NvwF4qVxy6x1PELjn68zuP7abDHr46r 57/09ooVN+iXXnEGMtQVS/OPvYHSa2NgTSZz6Y86lCRbZmUOOlK31RDNlMvYNA+s 3iIVHovno/JuJnTOE8LY =fQ8z -----END PGP SIGNATURE----- Merge tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pul removal of obsolete architecture ports from Arnd Bergmann: "This removes the entire architecture code for blackfin, cris, frv, m32r, metag, mn10300, score, and tile, including the associated device drivers. I have been working with the (former) maintainers for each one to ensure that my interpretation was right and the code is definitely unused in mainline kernels. Many had fond memories of working on the respective ports to start with and getting them included in upstream, but also saw no point in keeping the port alive without any users. In the end, it seems that while the eight architectures are extremely different, they all suffered the same fate: There was one company in charge of an SoC line, a CPU microarchitecture and a software ecosystem, which was more costly than licensing newer off-the-shelf CPU cores from a third party (typically ARM, MIPS, or RISC-V). It seems that all the SoC product lines are still around, but have not used the custom CPU architectures for several years at this point. In contrast, CPU instruction sets that remain popular and have actively maintained kernel ports tend to all be used across multiple licensees. [ See the new nds32 port merged in the previous commit for the next generation of "one company in charge of an SoC line, a CPU microarchitecture and a software ecosystem" - Linus ] The removal came out of a discussion that is now documented at https://lwn.net/Articles/748074/. Unlike the original plans, I'm not marking any ports as deprecated but remove them all at once after I made sure that they are all unused. Some architectures (notably tile, mn10300, and blackfin) are still being shipped in products with old kernels, but those products will never be updated to newer kernel releases. After this series, we still have a few architectures without mainline gcc support: - unicore32 and hexagon both have very outdated gcc releases, but the maintainers promised to work on providing something newer. At least in case of hexagon, this will only be llvm, not gcc. - openrisc, risc-v and nds32 are still in the process of finishing their support or getting it added to mainline gcc in the first place. They all have patched gcc-7.3 ports that work to some degree, but complete upstream support won't happen before gcc-8.1. Csky posted their first kernel patch set last week, their situation will be similar [ Palmer Dabbelt points out that RISC-V support is in mainline gcc since gcc-7, although gcc-7.3.0 is the recommended minimum - Linus ]" This really says it all: 2498 files changed, 95 insertions(+), 467668 deletions(-) * tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits) MAINTAINERS: UNICORE32: Change email account staging: iio: remove iio-trig-bfin-timer driver tty: hvc: remove tile driver tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers serial: remove tile uart driver serial: remove m32r_sio driver serial: remove blackfin drivers serial: remove cris/etrax uart drivers usb: Remove Blackfin references in USB support usb: isp1362: remove blackfin arch glue usb: musb: remove blackfin port usb: host: remove tilegx platform glue pwm: remove pwm-bfin driver i2c: remove bfin-twi driver spi: remove blackfin related host drivers watchdog: remove bfin_wdt driver can: remove bfin_can driver mmc: remove bfin_sdh driver input: misc: remove blackfin rotary driver input: keyboard: remove bf54x driver ... |
|
|
Linus Torvalds
|
d22fff8141 |
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm updates from Ingo Molnar: - Extend the memmap= boot parameter syntax to allow the redeclaration and dropping of existing ranges, and to support all e820 range types (Jan H. Schönherr) - Improve the W+X boot time security checks to remove false positive warnings on Xen (Jan Beulich) - Support booting as Xen PVH guest (Juergen Gross) - Improved 5-level paging (LA57) support, in particular it's possible now to have a single kernel image for both 4-level and 5-level hardware (Kirill A. Shutemov) - AMD hardware RAM encryption support (SME/SEV) fixes (Tom Lendacky) - Preparatory commits for hardware-encrypted RAM support on Intel CPUs. (Kirill A. Shutemov) - Improved Intel-MID support (Andy Shevchenko) - Show EFI page tables in page_tables debug files (Andy Lutomirski) - ... plus misc fixes and smaller cleanups * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (56 commits) x86/cpu/tme: Fix spelling: "configuation" -> "configuration" x86/boot: Fix SEV boot failure from change to __PHYSICAL_MASK_SHIFT x86/mm: Update comment in detect_tme() regarding x86_phys_bits x86/mm/32: Remove unused node_memmap_size_bytes() & CONFIG_NEED_NODE_MEMMAP_SIZE logic x86/mm: Remove pointless checks in vmalloc_fault x86/platform/intel-mid: Add special handling for ACPI HW reduced platforms ACPI, x86/boot: Introduce the ->reduced_hw_early_init() ACPI callback ACPI, x86/boot: Split out acpi_generic_reduce_hw_init() and export x86/pconfig: Provide defines and helper to run MKTME_KEY_PROG leaf x86/pconfig: Detect PCONFIG targets x86/tme: Detect if TME and MKTME is activated by BIOS x86/boot/compressed/64: Handle 5-level paging boot if kernel is above 4G x86/boot/compressed/64: Use page table in trampoline memory x86/boot/compressed/64: Use stack from trampoline memory x86/boot/compressed/64: Make sure we have a 32-bit code segment x86/mm: Do not use paravirtualized calls in native_set_p4d() kdump, vmcoreinfo: Export pgtable_l5_enabled value x86/boot/compressed/64: Prepare new top-level page table for trampoline x86/boot/compressed/64: Set up trampoline memory x86/boot/compressed/64: Save and restore trampoline memory ... |
|
|
Bjorn Helgaas
|
4c0fd7648d |
PCI/portdrv: Remove unnecessary "pcie_ports=auto" parameter
The "pcie_ports=auto" parameter set pcie_ports_disabled and pcie_ports_auto to their compiled-in defaults, so specifying the parameter is the same as not using it at all. Remove the "pcie_ports=auto" parameter and update the documentation. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> |
|
|
Bjorn Helgaas
|
1e447c57ae |
PCI/portdrv: Remove "pcie_hp=nomsi" kernel parameter
|
|
|
Martin Kepplinger
|
52c37d410d |
Documentation: admin-guide: add kvmconfig, xenconfig and tinyconfig commands
Add kvmconfig, xenconfig and tinyconfig to the list of alternative configuration commands. Descriptions are directly taken from the Makefile. Signed-off-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Arnd Bergmann
|
1ea5afd42a |
Documentation: arch-support: remove obsolete architectures
A number of architecture ports are obsolete and getting dropped, so we no longer want to track the respective features. We already removed the lines for metag and mn10300, this does the same edits for all the others. For the remaining 21 architectures, this shows how many are known to implement each given feature: 19 time/modern-timekeeping/arch-support.txt 19 time/clockevents/arch-support.txt 15 core/tracehook/arch-support.txt 14 core/generic-idle-thread/arch-support.txt 13 locking/lockdep/arch-support.txt 12 io/dma-api-debug/arch-support.txt 11 debug/kgdb/arch-support.txt 10 time/virt-cpuacct/arch-support.txt 9 debug/kretprobes/arch-support.txt 9 debug/kprobes/arch-support.txt 8 vm/THP/arch-support.txt 8 vm/pte_special/arch-support.txt 8 vm/numa-memblock/arch-support.txt 8 io/sg-chain/arch-support.txt 7 perf/kprobes-event/arch-support.txt 7 locking/rwsem-optimized/arch-support.txt 7 debug/gcov-profile-all/arch-support.txt 7 core/jump-labels/arch-support.txt 7 core/BPF-JIT/arch-support.txt 6 vm/ELF-ASLR/arch-support.txt 6 time/context-tracking/arch-support.txt 6 seccomp/seccomp-filter/arch-support.txt 6 debug/stackprotector/arch-support.txt 5 time/irq-time-acct/arch-support.txt 5 io/dma-contiguous/arch-support.txt 5 debug/uprobes/arch-support.txt 4 vm/ioremap_prot/arch-support.txt 4 time/arch-tick-broadcast/arch-support.txt 4 perf/perf-stackdump/arch-support.txt 4 perf/perf-regs/arch-support.txt 3 debug/KASAN/arch-support.txt 2 vm/PG_uncached/arch-support.txt 2 vm/huge-vmap/arch-support.txt 2 sched/numa-balancing/arch-support.txt 2 sched/membarrier-sync-core/arch-support.txt 2 locking/cmpxchg-local/arch-support.txt 2 debug/optprobes/arch-support.txt 2 debug/kprobes-on-ftrace/arch-support.txt 1 vm/TLB/arch-support.txt 1 locking/queued-spinlocks/arch-support.txt 1 locking/queued-rwlocks/arch-support.txt 1 debug/user-ret-profiler/arch-support.txt 0 lib/strncasecmp/arch-support.txt Note that the list does not include riscv or nds32 yet, these still need to be added. Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
|
|
Kai-Heng Feng
|
4d8d5a392a |
usb: core: Add USB_QUIRK_DELAY_CTRL_MSG to usbcore quirks
There's a new quirk, USB_QUIRK_DELAY_CTRL_MSG. Add it to usbcore quirks for completeness. Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
|
|
Filip Alac
|
2ddc8e2d2b |
HID: usbhid: extend the polling interval configuration to keyboards
For mouse and joystick devices user can change the polling interval via usbhid.mousepoll and usbhid.jspoll. Implement the same thing for keyboards, so user can reduce(or increase) input latency this way. This has been tested with a Cooler Master Devastator with kbpoll=32, resulting in delay between events of 32 ms(values were taken from evtest). Signed-off-by: Filip Alac <filipalac@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> |
|
|
Mimi Zohar
|
9e67028e76 |
ima: fail signature verification based on policy
This patch addresses the fuse privileged mounted filesystems in environments which are unwilling to accept the risk of trusting the signature verification and want to always fail safe, but are for example using a pre-built kernel. This patch defines a new builtin policy named "fail_securely", which can be specified on the boot command line as an argument to "ima_policy=". Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Cc: Miklos Szeredi <miklos@szeredi.hu> Cc: Seth Forshee <seth.forshee@canonical.com> Cc: Dongsu Park <dongsu@kinvolk.io> Cc: Alban Crequy <alban@kinvolk.io> Acked-by: Serge Hallyn <serge@hallyn.com> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> |
|
|
Kai-Heng Feng
|
027bd6cafd |
usb: core: Add "quirks" parameter for usbcore
Trying quirks in usbcore needs to rebuild the driver or the entire kernel if it's builtin. It can save a lot of time if usbcore has similar ability like "usbhid.quirks=" and "usb-storage.quirks=". Rename the original quirk detection function to "static" as we introduce this new "dynamic" function. Now users can use "usbcore.quirks=" as short term workaround before the next kernel release. Also, the quirk parameter can XOR the builtin quirks for debugging purpose. This is inspired by usbhid and usb-storage. Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
|
|
Liran Alon
|
c4ae60e4bb |
KVM: x86: Add module parameter for supporting VMware backdoor
Support access to VMware backdoor requires KVM to intercept #GP exceptions from guest which introduce slight performance hit. Therefore, control this support by module parameter. Note that module parameter is exported as it should be consumed by kvm_intel & kvm_amd to determine if they should intercept #GP or not. This commit doesn't change semantics. It is done as a preparation for future commits. Signed-off-by: Liran Alon <liran.alon@oracle.com> Reviewed-by: Nikita Leshenko <nikita.leshchenko@oracle.com> Reviewed-by: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
|
|
Arnd Bergmann
|
4ba66a9760 |
arch: remove blackfin port
The Analog Devices Blackfin port was added in 2007 and was rather active for a while, but all work on it has come to a standstill over time, as Analog have changed their product line-up. Aaron Wu confirmed that the architecture port is no longer relevant, and multiple people suggested removing blackfin independently because of some of its oddities like a non-working SMP port, and the amount of duplication between the chip variants, which cause extra work when doing cross-architecture changes. Link: https://docs.blackfin.uclinux.org/ Acked-by: Aaron Wu <Aaron.Wu@analog.com> Acked-by: Bryan Wu <cooloney@gmail.com> Cc: Steven Miao <realmz6@gmail.com> Cc: Mike Frysinger <vapier@chromium.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
|
|
Marc Zyngier
|
f736d65df0 |
irqchip/gic-v3: Allow LPIs to be disabled from the command line
For most GICv3 implementations, enabling LPIs is a one way switch. Once they're on, there is no turning back, which completely kills kexec (pending tables will always be live, and we can't tell the secondary kernel where they are). This is really annoying if you plan to use Linux as a bootloader, as it pretty much guarantees that the secondary kernel won't be able to use MSIs, and may even see some memory corruption. Bad. A workaround for this unfortunate situation is to allow the kernel not to enable LPIs, even if the feature is present in the HW. This would allow Linux-as-a-bootloader to leave LPIs alone, and let the secondary kernel to do whatever it wants with them. Let's introduce a boolean "irqchip.gicv3_nolpi" command line option that serves that purpose. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> |
|
|
Greg Kroah-Hartman
|
95713fb8aa |
Revert "usb: core: Add "quirks" parameter for usbcore"
This reverts commit
|
|
|
Kai-Heng Feng
|
b27560e4d9 |
usb: core: Add "quirks" parameter for usbcore
Trying quirks in usbcore needs to rebuild the driver or the entire kernel if it's builtin. It can save a lot of time if usbcore has similar ability like "usbhid.quirks=" and "usb-storage.quirks=". Rename the original quirk detection function to "static" as we introduce this new "dynamic" function. Now users can use "usbcore.quirks=" as short term workaround before the next kernel release. Also, the quirk parameter can XOR the builtin quirks for debugging purpose. This is inspired by usbhid and usb-storage. Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
|
|
Dave Hansen
|
7f5d465f4d |
docs: clarify security-bugs disclosure policy
I think we need to soften the language a bit. It might scare folks off, especially the: We prefer to fully disclose the bug as soon as possible. which is not really the case. Linus says: It's not full disclosure, it's not coordinated disclosure, and it's not "no disclosure". It's more like just "timely open fixes". I changed a bit of the wording in here, but mostly to remove the word "disclosure" since it seems to mean very specific things to people that we do not mean here. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Kees Cook <keescook@chromium.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Alan Cox <gnomes@lxorguk.ukuu.org.uk> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Mika Westerberg
|
6fc14e1a44 |
thunderbolt: Introduce USB only (SL4) security level
This new security level works so that it creates one PCIe tunnel to the connected Thunderbolt dock, removing PCIe links downstream of the dock. This leaves only the internal USB controller visible. Display Port tunnels are created normally. While there make sure security sysfs attribute returns "unknown" for any future security level. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> |
|
|
Greg Edwards
|
11dd266637 |
audit: do not panic on invalid boot parameter
If you pass in an invalid audit boot parameter value, e.g. "audit=off", the kernel panics very early in boot before the regular console is initialized. Unless you have earlyprintk enabled, there is no indication of what the problem is on the console. Convert the panic() calls to pr_err(), and leave auditing enabled if an invalid parameter value was passed in. Modify the parameter to also accept "on" or "off" as valid values, and update the documentation accordingly. Signed-off-by: Greg Edwards <gedwards@ddn.com> Signed-off-by: Paul Moore <paul@paul-moore.com> |
|
|
Jan H. Schönherr
|
ef61f8a340 |
x86/boot/e820: Implement a range manipulation operator
Add a more versatile memmap= operator, which -- in addition to all the things that were possible before -- allows you to: - redeclare existing ranges -- before, you were limited to adding ranges; - drop any range -- like a mem= for any location; - use any e820 memory type -- not just some predefined ones. The syntax is: memmap=<size>%<offset>-<oldtype>+<newtype> Size and offset work as usual. The "-<oldtype>" and "+<newtype>" are optional and their existence determine the behavior: The command works on the specified range of memory limited to type <oldtype> (if specified). This memory is then configured to show up as <newtype>. If <newtype> is not specified, the memory is removed from the e820 map. Signed-off-by: Jan H. Schönherr <jschoenh@amazon.de> Cc: Andy Lutomirski <luto@kernel.org> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20180202231020.15608-1-jschoenh@amazon.de Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
|
Philipp Hahn
|
29b26ae470 |
doc: module-signing.rst: Fix reST formatting
Move the _if_ outside the verbatim string. Make key ring name as a verbatim string. Signed-off-by: Philipp Hahn <hahn@univention.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Philipp Hahn
|
dddc7231b9 |
doc: Rename .system_keyring to .builtin_trusted_keys
Commit |
|
|
James Hogan
|
298910619d
|
docs: Remove metag docs
Now that arch/metag/ has been removed, remove Meta architecture specific documentation from the Documentation/ directory. Signed-off-by: James Hogan <jhogan@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-metag@vger.kernel.org Cc: linux-doc@vger.kernel.org |
|
|
Frederic Weisbecker
|
083c6eeab2 |
sched/isolation: Update nohz documentation to explain tick offload
Update the documentation to reflect the 1Hz tick offload changes. Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Christoph Lameter <cl@linux.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Rik van Riel <riel@redhat.com> Cc: Wanpeng Li <kernellwp@gmail.com> Link: http://lkml.kernel.org/r/1519186649-3242-8-git-send-email-frederic@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
|
Jonathan Neuschäfer
|
b57c847ca6 |
admin-guide: Fix list formatting in tained-kernels.html
Without this patch, the points 1-9 in the list are rendered as an HTML blockquote containing a list, causing them to be indented further than the rest of the list. While at it, also fix the quotation marks around G and P. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Linus Torvalds
|
54ce685cae |
More ACPI updates for v4.16-rc1
- Update the ACPICA kernel code to upstream revision 20180105 including:
* Assorted fixes (Jung-uk Kim).
* Support for X32 ABI compilation (Anuj Mittal).
* Update of ACPICA copyrights to 2018 (Bob Moore).
- Prepare for future modifications to avoid executing the _STA control
method too early (Hans de Goede).
- Make the processor performance control library code ignore _PPC
notifications if they cannot be handled and fix up the C1 idle
state definition when it is used as a fallback state (Chen Yu,
Yazen Ghannam).
- Make it possible to use the SPCR table on x86 and to replace the
original IORT table with a new one from initrd (Prarit Bhargava,
Shunyong Yang).
- Add battery-related quirks for Asus UX360UA and UX410UAK and add
quirks for table parsing on Dell XPS 9570 and Precision M5530
(Kai Heng Feng).
- Address static checker warnings in the CPPC code (Gustavo Silva).
- Avoid printing a raw pointer to the kernel log in the smart
battery driver (Greg Kroah-Hartman).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iQIcBAABCAAGBQJafGvJAAoJEILEb/54YlRxiusQAKUa+OM/oxTJkOEfGGRM8NlS
Hq/PaL/TnAj3nCoZN9fM38mI4gkxqu3eVMv6kfiqRe8VYmUX9r9tRbQ9kxvEYa7n
s6Dl+wdC9UND20QJkYVzPlaXbPuZyLFHt4Fkb1hp+HAGgNNYqc4e0lJvI82F2pdo
im1UFI84jg9UQV4WpUJL6ny2c/RMNtpUV5fOKFD8lkvBvVe7mtZTZ+1nZDeqXGkV
jzdrVTHLUEDhjS1o0TBmEsJGNeGOqnK/f+m8Rq4397guPAQQq18MYNC68SzhuGjP
iqhvIvI9sF197i66l/qgsubBifOV4At8Wb0LA5cU8CQLLpEW8GDktz/kucVHyzJ4
cVKuPXptBwwtPbNFHWO8reTUFMAnP7IpjtC31ntr6xWRQCiXv0/i2hRRN54g9T7e
FAOBmmys5DKFOq50OB5WdD3/Qz5OUuVgdbrSxNFARIZpQFtUn7Np2/nmNpPgrrcl
77hO8dpeXUTVvM4HpRQN1+r0KOTLfTAvWV7LYLAjCF9ivc0Vop/tYZQ2VEMSUEFD
SGKC30mGC4pphAjxcSYV282JR7Jx7arQ71ZA5uYTRRuxnEQd/2MC71fNjrFmCgUW
1Pumw0Pw6eZRjj1FZ/pj0X5lm7AlZj0dVzsJFgNb0FcJW0nOhN3czQrA4igoSVng
B2sRv9U8YDnDtzHyTPrY
=rVdp
-----END PGP SIGNATURE-----
Merge tag 'acpi-part2-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI updates from Rafael Wysocki:
"These are mostly fixes and cleanups, a few new quirks, a couple of
updates related to the handling of ACPI tables and ACPICA copyrights
refreshment.
Specifics:
- Update the ACPICA kernel code to upstream revision 20180105
including:
* Assorted fixes (Jung-uk Kim)
* Support for X32 ABI compilation (Anuj Mittal)
* Update of ACPICA copyrights to 2018 (Bob Moore)
- Prepare for future modifications to avoid executing the _STA
control method too early (Hans de Goede)
- Make the processor performance control library code ignore _PPC
notifications if they cannot be handled and fix up the C1 idle
state definition when it is used as a fallback state (Chen Yu,
Yazen Ghannam)
- Make it possible to use the SPCR table on x86 and to replace the
original IORT table with a new one from initrd (Prarit Bhargava,
Shunyong Yang)
- Add battery-related quirks for Asus UX360UA and UX410UAK and add
quirks for table parsing on Dell XPS 9570 and Precision M5530 (Kai
Heng Feng)
- Address static checker warnings in the CPPC code (Gustavo Silva)
- Avoid printing a raw pointer to the kernel log in the smart battery
driver (Greg Kroah-Hartman)"
* tag 'acpi-part2-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: sbshc: remove raw pointer from printk() message
ACPI: SPCR: Make SPCR available to x86
ACPI / CPPC: Use 64-bit arithmetic instead of 32-bit
ACPI / tables: Add IORT to injectable table list
ACPI / bus: Parse tables as term_list for Dell XPS 9570 and Precision M5530
ACPICA: Update version to 20180105
ACPICA: All acpica: Update copyrights to 2018
ACPI / processor: Set default C1 idle state description
ACPI / battery: Add quirk for Asus UX360UA and UX410UAK
ACPI: processor_perflib: Do not send _PPC change notification if not ready
ACPI / scan: Use acpi_bus_get_status() to initialize ACPI_TYPE_DEVICE devs
ACPI / bus: Do not call _STA on battery devices with unmet dependencies
PCI: acpiphp_ibm: prepare for acpi_get_object_info() no longer returning status
ACPI: export acpi_bus_get_status_handle()
ACPICA: Add a missing pair of parentheses
ACPICA: Prefer ACPI_TO_POINTER() over ACPI_ADD_PTR()
ACPICA: Avoid NULL pointer arithmetic
ACPICA: Linux: add support for X32 ABI compilation
ACPI / video: Use true for boolean value
|
|
|
Linus Torvalds
|
e03ab6c4ad |
A few late-arriving fixes, along with Konstantin's PGP document that had
no reason to wait another cycle. -----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJaejsmAAoJEI3ONVYwIuV6iqIP/2vJ1GfaYwVKScGybqTAGFIj 5zAwjkd3LhYYYfx5DkEcpAqYllZS/jmj5th5095TxDlDrwfxNwMYBQUP7rYp6s6E IupSGq4z/n/6MseeXom6J7IxRaRBbERB7VLb0eAA8UOTis96kgnjuMRB3bCVHlfN 7VTo8uFm4/ZKKntSq4gl59FnVna4PkZU10TB0tWh617lyPkfJR8FkBcdBvlXbCYt 03LAkQ5F1XfVMM9gq6F3IGnmPCkIRbzMrXm1tXZNRYFkfu0bw3lN5um0DOLrq4Qw NTybo1W5hKf3LQLVJGIDpMzYkrp4GMrBLy6cNaK6V5vHHAmRew+zHBu93dSmzqE+ hT+Zih6FLXJV2Bc/GnwGiFFSHU44MBVO4DTACRTFAW19gnVaFZe51uCJ+gzwNkhk v4c4riGxRAVeZA6FoXXcjGxwjA2qmjMqcjiRHW2pxSHb1Oz+KwQHDd8muS/G0H/a CBCwlkfrJHPWVkrYRSuq912feIYMs9I/y/46lIhsowmFYBCF6g1SZ5xk1lggM+uo FJp/+m1vQvbWrkotFZjXiv/riWURKTQykSUHA9+cQcU/UIkjfx0YrmGkpfjaM2G8 QTPq1HU9iRLpXXYrKNnzLEPH4CUU+ffGD8Ou9migxrNQnSut/Dgsii0Eqr/AGNbW bChrYwjeT7OAvzW8A5ZZ =ffz4 -----END PGP SIGNATURE----- Merge tag 'docs-4.16-2' of git://git.lwn.net/linux Pull more documentation updates from Jonathan Corbet: "A few late-arriving fixes, along with Konstantin's PGP document that had no reason to wait another cycle" * tag 'docs-4.16-2' of git://git.lwn.net/linux: Documentation/process: tweak pgp maintainer guide Documentation/admin-guide: fixes for thunderbolt.rst Documentation: mips: Update AU1xxx_IDE Kconfig dependencies Fix broken link in Documentation/process/kernel-docs.rst Documentation/process: kernel maintainer PGP guide |
|
|
Prarit Bhargava
|
0231d00082 |
ACPI: SPCR: Make SPCR available to x86
SPCR is currently only enabled or ARM64 and x86 can use SPCR to setup an early console. General fixes include updating Documentation & Kconfig (for x86), updating comments, and changing parse_spcr() to acpi_parse_spcr(), and earlycon_init_is_deferred to earlycon_acpi_spcr_enable to be more descriptive. On x86, many systems have a valid SPCR table but the table version is not 2 so the table version check must be a warning. On ARM64 when the kernel parameter earlycon is used both the early console and console are enabled. On x86, only the earlycon should be enabled by by default. Modify acpi_parse_spcr() to allow options for initializing the early console and console separately. Signed-off-by: Prarit Bhargava <prarit@redhat.com> Acked-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Mark Salter <msalter@redhat.com> Tested-by: Mark Salter <msalter@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
|
|
Linus Torvalds
|
105cf3c8c6 |
pci-v4.16-changes
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJad5lgAAoJEFmIoMA60/r8s2kQAI3PztawDpaCP9Z12pkbBHSt Ho0xTyk9rCZi9kQJbNjc+a+QrlA3QmTHXIXerB3LSWoh7M+XhsECjem92eHpgLNS JvYPhTfOrCr0vdiAmOz6hD0AqN/psrbfzgiJhSwomsGEFS77k7kERSJckRv81sxb Aj5F/WjucAgLorwm4auveAJEQ7atE7/6pkXzoqYm4G6NLOb46jUcRGndrnvXZBlz fws8fBM4BHyi7i25CYQl24tFq1CGax1rIPgLg+4KnH76bQk/N6Ju0sGVSzfh+hG8 SIerK9bJbzGRAuNKoxB3aO1dyzsK3x9WztE2mG98w5trOISPIR1FqnvC/225FWAU d6eIXiC7wKnEx+DElNTzCjzfHc7SAJoupO32H7CoiTe5zPUlWlxJ1zLYkK1gt50q m8PRBiYTglxyznzrO0drtcdjEzvbdZNRrsYnul4wi1vSHzjk6F6XLtzT10XWM1M1 1pXLB8384FTj0Hu4bq6Y3Aivkmz0Sf+eQM2NaOwe+Zj7/1VV0d3lvi4LUXkqzLCA FoXPJSMxG2Qu+iflCeYRQBJjExaZH3eNLZ3dT6QpcJrjaFVedd9u5DeeFqNL27zV bhr8TdqrR4p4rc8EBAGoCapw96IxLZROKB3gxbrZVOpfIZpzthwHbElHX6aqUgF4 w/EV1JWs36WXWaxFk8wd =ttq9 -----END PGP SIGNATURE----- Merge tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: - skip AER driver error recovery callbacks for correctable errors reported via ACPI APEI, as we already do for errors reported via the native path (Tyler Baicar) - fix DPC shared interrupt handling (Alex Williamson) - print full DPC interrupt number (Keith Busch) - enable DPC only if AER is available (Keith Busch) - simplify DPC code (Bjorn Helgaas) - calculate ASPM L1 substate parameter instead of hardcoding it (Bjorn Helgaas) - enable Latency Tolerance Reporting for ASPM L1 substates (Bjorn Helgaas) - move ASPM internal interfaces out of public header (Bjorn Helgaas) - allow hot-removal of VGA devices (Mika Westerberg) - speed up unplug and shutdown by assuming Thunderbolt controllers don't support Command Completed events (Lukas Wunner) - add AtomicOps support for GPU and Infiniband drivers (Felix Kuehling, Jay Cornwall) - expose "ari_enabled" in sysfs to help NIC naming (Stuart Hayes) - clean up PCI DMA interface usage (Christoph Hellwig) - remove PCI pool API (replaced with DMA pool) (Romain Perier) - deprecate pci_get_bus_and_slot(), which assumed PCI domain 0 (Sinan Kaya) - move DT PCI code from drivers/of/ to drivers/pci/ (Rob Herring) - add PCI-specific wrappers for dev_info(), etc (Frederick Lawler) - remove warnings on sysfs mmap failure (Bjorn Helgaas) - quiet ROM validation messages (Alex Deucher) - remove redundant memory alloc failure messages (Markus Elfring) - fill in types for compile-time VGA and other I/O port resources (Bjorn Helgaas) - make "pci=pcie_scan_all" work for Root Ports as well as Downstream Ports to help AmigaOne X1000 (Bjorn Helgaas) - add SPDX tags to all PCI files (Bjorn Helgaas) - quirk Marvell 9128 DMA aliases (Alex Williamson) - quirk broken INTx disable on Ceton InfiniTV4 (Bjorn Helgaas) - fix CONFIG_PCI=n build by adding dummy pci_irqd_intx_xlate() (Niklas Cassel) - use DMA API to get MSI address for DesignWare IP (Niklas Cassel) - fix endpoint-mode DMA mask configuration (Kishon Vijay Abraham I) - fix ARTPEC-6 incorrect IS_ERR() usage (Wei Yongjun) - add support for ARTPEC-7 SoC (Niklas Cassel) - add endpoint-mode support for ARTPEC (Niklas Cassel) - add Cadence PCIe host and endpoint controller driver (Cyrille Pitchen) - handle multiple INTx status bits being set in dra7xx (Vignesh R) - translate dra7xx hwirq range to fix INTD handling (Vignesh R) - remove deprecated Exynos PHY initialization code (Jaehoon Chung) - fix MSI erratum workaround for HiSilicon Hip06/Hip07 (Dongdong Liu) - fix NULL pointer dereference in iProc BCMA driver (Ray Jui) - fix Keystone interrupt-controller-node lookup (Johan Hovold) - constify qcom driver structures (Julia Lawall) - rework Tegra config space mapping to increase space available for endpoints (Vidya Sagar) - simplify Tegra driver by using bus->sysdata (Manikanta Maddireddy) - remove PCI_REASSIGN_ALL_BUS usage on Tegra (Manikanta Maddireddy) - add support for Global Fabric Manager Server (GFMS) event to Microsemi Switchtec switch driver (Logan Gunthorpe) - add IDs for Switchtec PSX 24xG3 and PSX 48xG3 (Kelvin Cao) * tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (140 commits) PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe endpoint controller PCI: endpoint: Fix EPF device name to support multi-function devices PCI: endpoint: Add the function number as argument to EPC ops PCI: cadence: Add host driver for Cadence PCIe controller dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe host controller PCI: Add vendor ID for Cadence PCI: Add generic function to probe PCI host controllers PCI: generic: fix missing call of pci_free_resource_list() PCI: OF: Add generic function to parse and allocate PCI resources PCI: Regroup all PCI related entries into drivers/pci/Makefile PCI/DPC: Reformat DPC register definitions PCI/DPC: Add and use DPC Status register field definitions PCI/DPC: Squash dpc_rp_pio_get_info() into dpc_process_rp_pio_error() PCI/DPC: Remove unnecessary RP PIO register structs PCI/DPC: Push dpc->rp_pio_status assignment into dpc_rp_pio_get_info() PCI/DPC: Squash dpc_rp_pio_print_error() into dpc_rp_pio_get_info() PCI/DPC: Make RP PIO log size check more generic PCI/DPC: Rename local "status" to "dpc_status" PCI/DPC: Squash dpc_rp_pio_print_tlp_header() into dpc_rp_pio_print_error() ... |
|
|
Linus Torvalds
|
35277995e1 |
Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull spectre/meltdown updates from Thomas Gleixner:
"The next round of updates related to melted spectrum:
- The initial set of spectre V1 mitigations:
- Array index speculation blocker and its usage for syscall,
fdtable and the n180211 driver.
- Speculation barrier and its usage in user access functions
- Make indirect calls in KVM speculation safe
- Blacklisting of known to be broken microcodes so IPBP/IBSR are not
touched.
- The initial IBPB support and its usage in context switch
- The exposure of the new speculation MSRs to KVM guests.
- A fix for a regression in x86/32 related to the cpu entry area
- Proper whitelisting for known to be safe CPUs from the mitigations.
- objtool fixes to deal proper with retpolines and alternatives
- Exclude __init functions from retpolines which speeds up the boot
process.
- Removal of the syscall64 fast path and related cleanups and
simplifications
- Removal of the unpatched paravirt mode which is yet another source
of indirect unproteced calls.
- A new and undisputed version of the module mismatch warning
- A couple of cleanup and correctness fixes all over the place
Yet another step towards full mitigation. There are a few things still
missing like the RBS underflow mitigation for Skylake and other small
details, but that's being worked on.
That said, I'm taking a belated christmas vacation for a week and hope
that everything is magically solved when I'm back on Feb 12th"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits)
KVM/SVM: Allow direct access to MSR_IA32_SPEC_CTRL
KVM/VMX: Allow direct access to MSR_IA32_SPEC_CTRL
KVM/VMX: Emulate MSR_IA32_ARCH_CAPABILITIES
KVM/x86: Add IBPB support
KVM/x86: Update the reverse_cpuid list to include CPUID_7_EDX
x86/speculation: Fix typo IBRS_ATT, which should be IBRS_ALL
x86/pti: Mark constant arrays as __initconst
x86/spectre: Simplify spectre_v2 command line parsing
x86/retpoline: Avoid retpolines for built-in __init functions
x86/kvm: Update spectre-v1 mitigation
KVM: VMX: make MSR bitmaps per-VCPU
x86/paravirt: Remove 'noreplace-paravirt' cmdline option
x86/speculation: Use Indirect Branch Prediction Barrier in context switch
x86/cpuid: Fix up "virtual" IBRS/IBPB/STIBP feature bits on Intel
x86/spectre: Fix spelling mistake: "vunerable"-> "vulnerable"
x86/spectre: Report get_user mitigation for spectre_v1
nl80211: Sanitize array index in parse_txq_params
vfs, fdtable: Prevent bounds-check bypass via speculative execution
x86/syscall: Sanitize syscall table de-references under speculation
x86/get_user: Use pointer masking to limit speculation
...
|
|
|
Linus Torvalds
|
ab486bc9a5 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk
Pull printk updates from Petr Mladek:
- Add a console_msg_format command line option:
The value "default" keeps the old "[time stamp] text\n" format. The
value "syslog" allows to see the syslog-like "<log
level>[timestamp] text" format.
This feature was requested by people doing regression tests, for
example, 0day robot. They want to have both filtered and full logs
at hands.
- Reduce the risk of softlockup:
Pass the console owner in a busy loop.
This is a new approach to the old problem. It was first proposed by
Steven Rostedt on Kernel Summit 2017. It marks a context in which
the console_lock owner calls console drivers and could not sleep.
On the other side, printk() callers could detect this state and use
a busy wait instead of a simple console_trylock(). Finally, the
console_lock owner checks if there is a busy waiter at the end of
the special context and eventually passes the console_lock to the
waiter.
The hand-off works surprisingly well and helps in many situations.
Well, there is still a possibility of the softlockup, for example,
when the flood of messages stops and the last owner still has too
much to flush.
There is increasing number of people having problems with
printk-related softlockups. We might eventually need to get better
solution. Anyway, this looks like a good start and promising
direction.
- Do not allow to schedule in console_unlock() called from printk():
This reverts an older controversial commit. The reschedule helped
to avoid softlockups. But it also slowed down the console output.
This patch is obsoleted by the new console waiter logic described
above. In fact, the reschedule made the hand-off less effective.
- Deprecate "%pf" and "%pF" format specifier:
It was needed on ia64, ppc64 and parisc64 to dereference function
descriptors and show the real function address. It is done
transparently by "%ps" and "pS" format specifier now.
Sergey Senozhatsky found that all the function descriptors were in
a special elf section and could be easily detected.
- Remove printk_symbol() API:
It has been obsoleted by "%pS" format specifier, and this change
helped to remove few continuous lines and a less intuitive old API.
- Remove redundant memsets:
Sergey removed unnecessary memset when processing printk.devkmsg
command line option.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk: (27 commits)
printk: drop redundant devkmsg_log_str memsets
printk: Never set console_may_schedule in console_trylock()
printk: Hide console waiter logic into helpers
printk: Add console owner and waiter logic to load balance console writes
kallsyms: remove print_symbol() function
checkpatch: add pF/pf deprecation warning
symbol lookup: introduce dereference_symbol_descriptor()
parisc64: Add .opd based function descriptor dereference
powerpc64: Add .opd based function descriptor dereference
ia64: Add .opd based function descriptor dereference
sections: split dereference_function_descriptor()
openrisc: Fix conflicting types for _exext and _stext
lib: do not use print_symbol()
irq debug: do not use print_symbol()
sysfs: do not use print_symbol()
drivers: do not use print_symbol()
x86: do not use print_symbol()
unicore32: do not use print_symbol()
sh: do not use print_symbol()
mn10300: do not use print_symbol()
...
|
|
|
Randy Dunlap
|
54e36a2dc5 |
Documentation/admin-guide: fixes for thunderbolt.rst
Edits for grammar, punctuation, and a doubled-up word. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Andreas Noever <andreas.noever@gmail.com> Cc: Michael Jamet <michael.jamet@intel.com> Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Yehezkel Bernat <yehezkel.bernat@intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Linus Torvalds
|
562f36ed28 |
Kconfig updates for v4.16
A pretty big batch of Kconfig updates. I have to mention the lexer
and parser of Kconfig are now built from real .l and .y sources.
So, flex and bison are the requirement for building the kernel.
Both of them (unlike gperf) have been stable for a long time. This
change has been tested several weeks in linux-next, and I did not
receive any problem report about this.
Summary:
- Add checks for mistakes, like the choice default is not in
choice, help is doubled
- Document data structure and complex code
- Fix various memory leaks
- Change Makefile to build lexer and parser instead of using
pre-generated C files
- Drop 'boolean' keyword, which is equivalent to 'bool'
- Use default 'yy' prefix and remove unneeded Make variables
- Fix gettext() check for xconfig
- Announce that oldnoconfig will be finally removed
- Make 'Selected by:' and 'Implied by' readable in help and
search result
- Hide silentoldconfig from 'make help' to stop confusing people
- Fix misc things and cleanups
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=rsi/
-----END PGP SIGNATURE-----
Merge tag 'kconfig-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kconfig updates from Masahiro Yamada:
"A pretty big batch of Kconfig updates.
I have to mention the lexer and parser of Kconfig are now built from
real .l and .y sources. So, flex and bison are the requirement for
building the kernel. Both of them (unlike gperf) have been stable for
a long time. This change has been tested several weeks in linux-next,
and I did not receive any problem report about this.
Summary:
- add checks for mistakes, like the choice default is not in choice,
help is doubled
- document data structure and complex code
- fix various memory leaks
- change Makefile to build lexer and parser instead of using
pre-generated C files
- drop 'boolean' keyword, which is equivalent to 'bool'
- use default 'yy' prefix and remove unneeded Make variables
- fix gettext() check for xconfig
- announce that oldnoconfig will be finally removed
- make 'Selected by:' and 'Implied by' readable in help and search
result
- hide silentoldconfig from 'make help' to stop confusing people
- fix misc things and cleanups"
* tag 'kconfig-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (37 commits)
kconfig: Remove silentoldconfig from help and docs; fix kconfig/conf's help
kconfig: make "Selected by:" and "Implied by:" readable
kconfig: announce removal of oldnoconfig if used
kconfig: fix make xconfig when gettext is missing
kconfig: Clarify menu and 'if' dependency propagation
kconfig: Document 'if' flattening logic
kconfig: Clarify choice dependency propagation
kconfig: Document SYMBOL_OPTIONAL logic
kbuild: remove unnecessary LEX_PREFIX and YACC_PREFIX
kconfig: use default 'yy' prefix for lexer and parser
kconfig: make conf_unsaved a local variable of conf_read()
kconfig: make xfgets() really static
kconfig: make input_mode static
kconfig: Warn if there is more than one help text
kconfig: drop 'boolean' keyword
kconfig: use bool instead of boolean for type definition attributes, again
kconfig: Remove menu_end_entry()
kconfig: Document important expression functions
kconfig: Document automatic submenu creation code
kconfig: Fix choice symbol expression leak
...
|
|
|
Linus Torvalds
|
255442c938 |
Documentation updates for 4.16. New stuff includes refcount_t
documentation, errseq documentation, kernel-doc support for nested structure definitions, the removal of lots of crufty kernel-doc support for unused formats, SPDX tag documentation, the beginnings of a manual for subsystem maintainers, and lots of fixes and updates. As usual, some of the changesets reach outside of Documentation/ to effect kerneldoc comment fixes. It also adds the new LICENSES directory, of which Thomas promises I do not need to be the maintainer. -----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJab11TAAoJEI3ONVYwIuV6i1UP/1LgGPHW9Ygq5qaLFbReZd/u Mx/orrhHX0PdkbCCE+CbL8Vm1m4UKFDTBdlpk3s542zxeeG0ZBXuTnvq4Kyk+cTN p4/vsIEzk/Ih13/glGE5MlV+EjiEK+8hK69TIUj7bAyuHmpzofjRz9/1M6RLDGDC HY6UI58AXG0yOQWMWCGRMYpQAFUGij2equ7Doe1ugXRq14dx7V4RsOhI140iRk7t bquAq1rS2fXniiuPFmLBUe4dWW28isVa/Vl/aXcaWQDKMyT0OLhjOMW36wWKqtPi WdVCpHv1NLZNyZZr9S3kvfOwW+BUqpEzfVwssyBLW4h0tsnIx0U0HVhSTY8/TvFZ QD9yCSana4LB/e5CHXIX5lBHbjHxf+rETXqVV4MgwDaMvM3mCo4X6WUTJDmZADo6 vQISEKeb4su5uWAbc9T9xwRSLhZnFVdJ/QuYdNQ5+EpFJYLhzQ9eBvEz6JstSIXL p9ASBiPNY3ulpVZ8q0JOHJRBhq5mHJH6Dy8achzbILy2l/ZI4b8lJ53mw9II04cp puF96E6HpvuZ8Tgjjrg9U3ZdxXNrUgc/tjk2ZDkyTglk1XF2jKSq2tiNSZ3oLrJm XqJPnpCeyJM5UDvwkIBzgC41WEHwe8uvoNbUnc4X7UJSZegFzcSLQXf5qaprHS5k XeQ7sbd+S+jzVVjFi0W5 =Z15Z -----END PGP SIGNATURE----- Merge tag 'docs-4.16' of git://git.lwn.net/linux Pull documentation updates from Jonathan Corbet: "Documentation updates for 4.16. New stuff includes refcount_t documentation, errseq documentation, kernel-doc support for nested structure definitions, the removal of lots of crufty kernel-doc support for unused formats, SPDX tag documentation, the beginnings of a manual for subsystem maintainers, and lots of fixes and updates. As usual, some of the changesets reach outside of Documentation/ to effect kerneldoc comment fixes. It also adds the new LICENSES directory, of which Thomas promises I do not need to be the maintainer" * tag 'docs-4.16' of git://git.lwn.net/linux: (65 commits) linux-next: docs-rst: Fix typos in kfigure.py linux-next: DOC: HWPOISON: Fix path to debugfs in hwpoison.txt Documentation: Fix misconversion of #if docs: add index entry for networking/msg_zerocopy Documentation: security/credentials.rst: explain need to sort group_list LICENSES: Add MPL-1.1 license LICENSES: Add the GPL 1.0 license LICENSES: Add Linux syscall note exception LICENSES: Add the MIT license LICENSES: Add the BSD-3-clause "Clear" license LICENSES: Add the BSD 3-clause "New" or "Revised" License LICENSES: Add the BSD 2-clause "Simplified" license LICENSES: Add the LGPL-2.1 license LICENSES: Add the LGPL 2.0 license LICENSES: Add the GPL 2.0 license Documentation: Add license-rules.rst to describe how to properly identify file licenses scripts: kernel_doc: better handle show warnings logic fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at doc: md: Fix a file name to md-fault.c in fault-injection.txt errseq: Add to documentation tree ... |
|
|
Josh Poimboeuf
|
12c69f1e94 |
x86/paravirt: Remove 'noreplace-paravirt' cmdline option
The 'noreplace-paravirt' option disables paravirt patching, leaving the original pv indirect calls in place. That's highly incompatible with retpolines, unless we want to uglify paravirt even further and convert the paravirt calls to retpolines. As far as I can tell, the option doesn't seem to be useful for much other than introducing surprising corner cases and making the kernel vulnerable to Spectre v2. It was probably a debug option from the early paravirt days. So just remove it. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Juergen Gross <jgross@suse.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ashok Raj <ashok.raj@intel.com> Cc: Greg KH <gregkh@linuxfoundation.org> Cc: Jun Nakajima <jun.nakajima@intel.com> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Asit Mallick <asit.k.mallick@intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Jason Baron <jbaron@akamai.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Alok Kataria <akataria@vmware.com> Cc: Arjan Van De Ven <arjan.van.de.ven@intel.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Dan Williams <dan.j.williams@intel.com> Link: https://lkml.kernel.org/r/20180131041333.2x6blhxirc2kclrq@treble |
|
|
Linus Torvalds
|
d772794637 |
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar:
"The main RCU changes in this cycle were:
- Updates to use cond_resched() instead of cond_resched_rcu_qs()
where feasible (currently everywhere except in kernel/rcu and in
kernel/torture.c). Also a couple of fixes to avoid sending IPIs to
offline CPUs.
- Updates to simplify RCU's dyntick-idle handling.
- Updates to remove almost all uses of smp_read_barrier_depends() and
read_barrier_depends().
- Torture-test updates.
- Miscellaneous fixes"
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (72 commits)
torture: Save a line in stutter_wait(): while -> for
torture: Eliminate torture_runnable and perf_runnable
torture: Make stutter less vulnerable to compilers and races
locking/locktorture: Fix num reader/writer corner cases
locking/locktorture: Fix rwsem reader_delay
torture: Place all torture-test modules in one MAINTAINERS group
rcutorture/kvm-build.sh: Skip build directory check
rcutorture: Simplify functions.sh include path
rcutorture: Simplify logging
rcutorture/kvm-recheck-*: Improve result directory readability check
rcutorture/kvm.sh: Support execution from any directory
rcutorture/kvm.sh: Use consistent help text for --qemu-args
rcutorture/kvm.sh: Remove unused variable, `alldone`
rcutorture: Remove unused script, config2frag.sh
rcutorture/configinit: Fix build directory error message
rcutorture: Preempt RCU-preempt readers more vigorously
torture: Reduce #ifdefs for preempt_schedule()
rcu: Remove have_rcu_nocb_mask from tree_plugin.h
rcu: Add comment giving debug strategy for double call_rcu()
tracing, rcu: Hide trace event rcu_nocb_wake when not used
...
|
|
|
Linus Torvalds
|
f0b13428c9 |
Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/cache updates from Thomas Gleixner: "A set of patches which add support for L2 cache partitioning to the Intel RDT facility" * 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/intel_rdt: Add command line parameter to control L2_CDP x86/intel_rdt: Enable L2 CDP in MSR IA32_L2_QOS_CFG x86/intel_rdt: Add two new resources for L2 Code and Data Prioritization (CDP) x86/intel_rdt: Enumerate L2 Code and Data Prioritization (CDP) feature x86/intel_rdt: Add L2CDP support in documentation x86/intel_rdt: Update documentation |
|
|
Linus Torvalds
|
1a9a126b50 |
ACPI updates for v4.16-rc1
- Update the ACPICA kernel code to upstream revision 20171215 including:
* Support for ACPI 6.0A changes in the NFIT table (Bob Moore).
* Local 64-bit divide in string conversions (Bob Moore).
* Fix for a regression in acpi_evaluate_object_type() (Bob Moore).
* Fixes for memory leaks during package object resolution (Bob Moore).
* Deployment of safe version of strncpy() (Bob Moore).
* Debug and messaging updates (Bob Moore).
* Support for PDTT, SDEV, TPM2 tables in iASL and tools (Bob Moore).
* Null pointer dereference avoidance in Op and cleanups (Colin Ian King).
* Fix for memory leak from building prefixed pathname (Erik Schmauss).
* Coding style fixes, disassembler and compiler updates (Hanjun Guo,
Erik Schmauss).
* Additional PPTT flags from ACPI 6.2 (Jeremy Linton).
* Fix for an off-by-one error in acpi_get_timer_duration() (Jung-uk Kim).
* Infinite loop detection timeout and utilities cleanups (Lv Zheng).
* Windows 10 version 1607 and 1703 OSI strings (Mario Limonciello).
- Update ACPICA information in MAINTAINERS to reflect the current
status of ACPICA maintenance and rename a local variable in one
function to match the corresponding upstream code (Rafael Wysocki).
- Clean up ACPI-related initialization on x86 (Andy Shevchenko).
- Add support for Intel Merrifield to the ACPI GPIO code (Andy
Shevchenko).
- Clean up ACPI PMIC drivers (Andy Shevchenko, Arvind Yadav).
- Fix the ACPI Generic Event Device (GED) driver to free IRQs on
shutdown and clean up the PCI IRQ Link driver (Sinan Kaya).
- Make the GHES code call into the AER driver on all errors and
clean up the ACPI APEI code (Colin Ian King, Tyler Baicar).
- Make the IA64 ACPI NUMA code parse all SRAT entries (Ganapatrao
Kulkarni).
- Add a lid switch blacklist to the ACPI button driver and make it
print extra debug messages on lid events (Hans de Goede).
- Add quirks for Asus GL502VSK and UX305LA to the ACPI battery
driver and clean it up somewhat (Bjørn Mork, Kai-Heng Feng).
- Add device link for CHT SD card dependency on I2C to the ACPI
LPSS (Intel SoCs) driver and make it avoid creating platform
device objects for devices without MMIO resources (Adrian Hunter,
Hans de Goede).
- Fix the ACPI GPE mask kernel command line parameter handling
(Prarit Bhargava).
- Fix the handling of (incorrectly exposed) backlight interfaces
without LCD (Hans de Goede).
- Fix the usage of debugfs_create_*() in the ACPI EC driver (Geert
Uytterhoeven).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=/eCQ
-----END PGP SIGNATURE-----
Merge tag 'acpi-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"The majority of this is an update of the ACPICA kernel code to
upstream revision 20171215 with a cosmetic change and a maintainers
information update on top of it.
The rest is mostly some minor fixes and cleanups in the ACPI drivers
and cleanups to initialization on x86.
Specifics:
- Update the ACPICA kernel code to upstream revision 20171215 including:
* Support for ACPI 6.0A changes in the NFIT table (Bob Moore)
* Local 64-bit divide in string conversions (Bob Moore)
* Fix for a regression in acpi_evaluate_object_type() (Bob Moore)
* Fixes for memory leaks during package object resolution (Bob
Moore)
* Deployment of safe version of strncpy() (Bob Moore)
* Debug and messaging updates (Bob Moore)
* Support for PDTT, SDEV, TPM2 tables in iASL and tools (Bob
Moore)
* Null pointer dereference avoidance in Op and cleanups (Colin Ian
King)
* Fix for memory leak from building prefixed pathname (Erik
Schmauss)
* Coding style fixes, disassembler and compiler updates (Hanjun
Guo, Erik Schmauss)
* Additional PPTT flags from ACPI 6.2 (Jeremy Linton)
* Fix for an off-by-one error in acpi_get_timer_duration()
(Jung-uk Kim)
* Infinite loop detection timeout and utilities cleanups (Lv
Zheng)
* Windows 10 version 1607 and 1703 OSI strings (Mario
Limonciello)
- Update ACPICA information in MAINTAINERS to reflect the current
status of ACPICA maintenance and rename a local variable in one
function to match the corresponding upstream code (Rafael Wysocki)
- Clean up ACPI-related initialization on x86 (Andy Shevchenko)
- Add support for Intel Merrifield to the ACPI GPIO code (Andy
Shevchenko)
- Clean up ACPI PMIC drivers (Andy Shevchenko, Arvind Yadav)
- Fix the ACPI Generic Event Device (GED) driver to free IRQs on
shutdown and clean up the PCI IRQ Link driver (Sinan Kaya)
- Make the GHES code call into the AER driver on all errors and clean
up the ACPI APEI code (Colin Ian King, Tyler Baicar)
- Make the IA64 ACPI NUMA code parse all SRAT entries (Ganapatrao
Kulkarni)
- Add a lid switch blacklist to the ACPI button driver and make it
print extra debug messages on lid events (Hans de Goede)
- Add quirks for Asus GL502VSK and UX305LA to the ACPI battery driver
and clean it up somewhat (Bjørn Mork, Kai-Heng Feng)
- Add device link for CHT SD card dependency on I2C to the ACPI LPSS
(Intel SoCs) driver and make it avoid creating platform device
objects for devices without MMIO resources (Adrian Hunter, Hans de
Goede)
- Fix the ACPI GPE mask kernel command line parameter handling
(Prarit Bhargava)
- Fix the handling of (incorrectly exposed) backlight interfaces
without LCD (Hans de Goede)
- Fix the usage of debugfs_create_*() in the ACPI EC driver (Geert
Uytterhoeven)"
* tag 'acpi-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (62 commits)
ACPI/PCI: pci_link: reduce verbosity when IRQ is enabled
ACPI / LPSS: Do not instiate platform_dev for devs without MMIO resources
ACPI / PMIC: Convert to use builtin_platform_driver() macro
ACPI / x86: boot: Propagate error code in acpi_gsi_to_irq()
ACPICA: Update version to 20171215
ACPICA: trivial style fix, no functional change
ACPICA: Fix a couple memory leaks during package object resolution
ACPICA: Recognize the Windows 10 version 1607 and 1703 OSI strings
ACPICA: DT compiler: prevent error if optional field at the end of table is not present
ACPICA: Rename a global variable, no functional change
ACPICA: Create and deploy safe version of strncpy
ACPICA: Cleanup the global variables and update comments
ACPICA: Debugger: fix slight indentation issue
ACPICA: Fix a regression in the acpi_evaluate_object_type() interface
ACPICA: Update for a few debug output statements
ACPICA: Debug output, no functional change
ACPI: EC: Fix debugfs_create_*() usage
ACPI / video: Default lcd_only to true on Win8-ready and newer machines
ACPI / x86: boot: Don't setup SCI on HW-reduced platforms
ACPI / x86: boot: Use INVALID_ACPI_IRQ instead of 0 for acpi_sci_override_gsi
...
|
|
|
Marc Herbert
|
cedd55d49d |
kconfig: Remove silentoldconfig from help and docs; fix kconfig/conf's help
As explained by Michal Marek at https://lkml.org/lkml/2011/8/31/189 silentoldconfig has become a misnomer. It has become an internal interface so remove it from "make help" and Documentation/ to stop confusing people using it as seen for instance at https://chromium-review.googlesource.com/835632 Don't remove it from kconfig/Makefile yet not to break any (other) tool using it. On the other hand, correct and expand its description in the help of the (internal) scripts/kconfig/conf.c Signed-off-by: Marc Herbert <marc.herbert@intel.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> |
|
|
Fenghua Yu
|
31516de306 |
x86/intel_rdt: Add command line parameter to control L2_CDP
L2 CDP can be controlled by kernel parameter "rdt=". If "rdt=l2cdp", L2 CDP is turned on. If "rdt=!l2cdp", L2 CDP is turned off. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: "Ravi V Shankar" <ravi.v.shankar@intel.com> Cc: "Tony Luck" <tony.luck@intel.com> Cc: Vikas" <vikas.shivappa@intel.com> Cc: Sai Praneeth" <sai.praneeth.prakhya@intel.com> Cc: Reinette" <reinette.chatre@intel.com> Link: https://lkml.kernel.org/r/1513810644-78015-7-git-send-email-fenghua.yu@intel.com |
|
|
Rafael J. Wysocki
|
13c35c8388 |
Merge branches 'acpi-numa', 'acpi-sysfs', 'acpi-pmic', 'acpi-soc' and 'acpi-ged'
* acpi-numa: ACPI / NUMA: ia64: Parse all entries of SRAT memory affinity table * acpi-sysfs: ACPI: sysfs: Make ACPI GPE mask kernel parameter cover all GPEs * acpi-pmic: ACPI / PMIC: Convert to use builtin_platform_driver() macro ACPI / PMIC: constify platform_device_id * acpi-soc: ACPI / LPSS: Do not instiate platform_dev for devs without MMIO resources ACPI / LPSS: Add device link for CHT SD card dependency on I2C * acpi-ged: ACPI: GED: unregister interrupts during shutdown |
|
|
Rafael J. Wysocki
|
bcaea4678f |
Merge branches 'acpi-pm' and 'pm-sleep'
* acpi-pm: platform/x86: surfacepro3: Support for wakeup from suspend-to-idle ACPI / PM: Use Low Power S0 Idle on more systems ACPI / PM: Make it possible to ignore the system sleep blacklist * pm-sleep: PM / hibernate: Drop unused parameter of enough_swap block, scsi: Fix race between SPI domain validation and system suspend PM / sleep: Make lock/unlock_system_sleep() available to kernel modules PM: hibernate: Do not subtract NR_FILE_MAPPED in minimum_image_size() |
|
|
Linus Torvalds
|
40548c6b6c |
Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 pti updates from Thomas Gleixner:
"This contains:
- a PTI bugfix to avoid setting reserved CR3 bits when PCID is
disabled. This seems to cause issues on a virtual machine at least
and is incorrect according to the AMD manual.
- a PTI bugfix which disables the perf BTS facility if PTI is
enabled. The BTS AUX buffer is not globally visible and causes the
CPU to fault when the mapping disappears on switching CR3 to user
space. A full fix which restores BTS on PTI is non trivial and will
be worked on.
- PTI bugfixes for EFI and trusted boot which make sure that the user
space visible page table entries have the NX bit cleared
- removal of dead code in the PTI pagetable setup functions
- add PTI documentation
- add a selftest for vsyscall to verify that the kernel actually
implements what it advertises.
- a sysfs interface to expose vulnerability and mitigation
information so there is a coherent way for users to retrieve the
status.
- the initial spectre_v2 mitigations, aka retpoline:
+ The necessary ASM thunk and compiler support
+ The ASM variants of retpoline and the conversion of affected ASM
code
+ Make LFENCE serializing on AMD so it can be used as speculation
trap
+ The RSB fill after vmexit
- initial objtool support for retpoline
As I said in the status mail this is the most of the set of patches
which should go into 4.15 except two straight forward patches still on
hold:
- the retpoline add on of LFENCE which waits for ACKs
- the RSB fill after context switch
Both should be ready to go early next week and with that we'll have
covered the major holes of spectre_v2 and go back to normality"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits)
x86,perf: Disable intel_bts when PTI
security/Kconfig: Correct the Documentation reference for PTI
x86/pti: Fix !PCID and sanitize defines
selftests/x86: Add test_vsyscall
x86/retpoline: Fill return stack buffer on vmexit
x86/retpoline/irq32: Convert assembler indirect jumps
x86/retpoline/checksum32: Convert assembler indirect jumps
x86/retpoline/xen: Convert Xen hypercall indirect jumps
x86/retpoline/hyperv: Convert assembler indirect jumps
x86/retpoline/ftrace: Convert ftrace assembler indirect jumps
x86/retpoline/entry: Convert entry assembler indirect jumps
x86/retpoline/crypto: Convert crypto assembler indirect jumps
x86/spectre: Add boot time option to select Spectre v2 mitigation
x86/retpoline: Add initial retpoline support
objtool: Allow alternatives to be ignored
objtool: Detect jumps to retpoline thunks
x86/pti: Make unpoison of pgd for trusted boot work for real
x86/alternatives: Fix optimize_nops() checking
sysfs/cpu: Fix typos in vulnerability documentation
x86/cpu/AMD: Use LFENCE_RDTSC in preference to MFENCE_RDTSC
...
|
|
|
Linus Torvalds
|
8e66791a80 |
pci-v4.15-fixes-2
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJaWRZvAAoJEFmIoMA60/r8JqoP/22/st7YsJjk9kJE0DCIUSjv yP0iyAfyPyfnhqgDtLfpb41Q4+sjR7C2xKUW8tfqUKXR4Gb+7zUXEYKb+qcco0T5 NJj5VWS5MnIGJHdHMqoqzswIsNSe1SDccsxAwSzY3CvmG9Mkg+BHmBAzEZBmsDcD 6S1AtLrvUOcEUyBrgfBYpi8cQFsnrFsaG7seY5EqkuTcjKvbebBQKawzarYOppqQ j8QIQ19f2B9q4rGV98HabtJZqb+ll5S1swBbEz6P6MJ6gy1IhADdfLlhTtpH0gXH Xb9gpcyA7rrrxPzVo85gFgyFR3ATE96aTURrDqSjsumGwer+UtqIH/KJjcA12vMF ObZRVHPRO0F4l9mbOJV7F0o7QgOEwmKcdHjhTh9jlOjV3XgPCTEGJJ4ihpw3cdjH bVeaoloPgAT6wTtkWK4mI8RYgwZUYQQxKFzc/0pK4BpNghoX8wigZvoH+ey+HQ1u 1KC8797zDUBquRBKZc9c8hFK+s7KkFj7FsKLAZs8k6MVPYHDjpF1CjqzCecVMKim tHRhlH/l+NTnKCh9D5HfmstPAtB/dojXE1dF+BI/I651FFpZVmvDNoMPq8/kOdM1 Mj9SjCMmYYMnkNxLHUJO4j6mWEMyj/YJsZRBK+qpIa6F/sRYy2/P1tA2bT5UbgWr zAhHadF6dyri20PEjZuL =Qi1b -----END PGP SIGNATURE----- Merge tag 'pci-v4.15-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fixes from Bjorn Helgaas: "Fix AMD boot regression due to 64-bit window conflicting with system memory (Christian König)" * tag 'pci-v4.15-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: x86/PCI: Move and shrink AMD 64-bit window to avoid conflict x86/PCI: Add "pci=big_root_window" option for AMD 64-bit windows |
|
|
David Woodhouse
|
da28512156 |
x86/spectre: Add boot time option to select Spectre v2 mitigation
Add a spectre_v2= option to select the mitigation used for the indirect branch speculation vulnerability. Currently, the only option available is retpoline, in its various forms. This will be expanded to cover the new IBRS/IBPB microcode features. The RETPOLINE_AMD feature relies on a serializing LFENCE for speculation control. For AMD hardware, only set RETPOLINE_AMD if LFENCE is a serializing instruction, which is indicated by the LFENCE_RDTSC feature. [ tglx: Folded back the LFENCE/AMD fixes and reworked it so IBRS integration becomes simple ] Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: gnomes@lxorguk.ukuu.org.uk Cc: Rik van Riel <riel@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: thomas.lendacky@amd.com Cc: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Kees Cook <keescook@google.com> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org> Cc: Paul Turner <pjt@google.com> Link: https://lkml.kernel.org/r/1515707194-20531-5-git-send-email-dwmw@amazon.co.uk |
|
|
=?UTF-8?q?Christian=20K=C3=B6nig?=
|
f32ab75471 |
x86/PCI: Add "pci=big_root_window" option for AMD 64-bit windows
Only try to enable a 64-bit window on AMD CPUs when "pci=big_root_window" is specified. This taints the kernel because the new 64-bit window uses address space we don't know anything about, and it may contain unreported devices or memory that would conflict with the window. The pci_amd_enable_64bit_bar() quirk that enables the window is specific to AMD CPUs. The generic solution would be to have the firmware enable the window and describe it in the host bridge's _CRS method, or at least describe it in the _PRS method so the OS would have the option of enabling it. Signed-off-by: Christian König <christian.koenig@amd.com> [bhelgaas: changelog, extend doc, mention taint in dmesg] Signed-off-by: Bjorn Helgaas <helgaas@kernel.org> |
|
|
David Sterba
|
dba04eb76d |
locking/Documentation: Remove stale crossrelease_fullstack parameter
The cross-release lockdep functionality has been removed in:
e966eaeeb623: ("locking/lockdep: Remove the cross-release locking checks")
... leaving the kernel parameter docs behind. The code handling
the parameter does not exist so this is a plain documentation change.
Signed-off-by: David Sterba <dsterba@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: byungchul.park@lge.com
Cc: linux-doc@vger.kernel.org
Link: http://lkml.kernel.org/r/20180108152731.27613-1-dsterba@suse.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
|
|
|
Dave Hansen
|
01c9b17bf6 |
x86/Documentation: Add PTI description
Add some details about how PTI works, what some of the downsides are, and how to debug it when things go wrong. Also document the kernel parameter: 'pti/nopti'. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Moritz Lipp <moritz.lipp@iaik.tugraz.at> Cc: Daniel Gruss <daniel.gruss@iaik.tugraz.at> Cc: Michael Schwarz <michael.schwarz@iaik.tugraz.at> Cc: Richard Fellner <richard.fellner@student.tugraz.at> Cc: Andy Lutomirski <luto@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Hugh Dickins <hughd@google.com> Cc: Andi Lutomirsky <luto@kernel.org> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20180105174436.1BC6FA2B@viggo.jf.intel.com |
|
|
Sergey Senozhatsky
|
cca10d58d2 |
printk: add console_msg_format command line option
0day and kernelCI automatically parse kernel log - basically some sort
of grepping using the pre-defined text patterns - in order to detect
and report regressions/errors. There are several sources they get the
kernel logs from:
a) dmesg or /proc/ksmg
This is the preferred way. Because `dmesg --raw' (see later Note)
and /proc/kmsg output contains facility and log level, which greatly
simplifies grepping for EMERG/ALERT/CRIT/ERR messages.
b) serial consoles
This option is harder to maintain, because serial console messages
don't contain facility and log level.
This patch introduces a `console_msg_format=' command line option,
to switch between different message formatting on serial consoles.
For the time being we have just two options - default and syslog.
The "default" option just keeps the existing format. While the
"syslog" option makes serial console messages to appear in syslog
format [syslog() syscall], matching the `dmesg -S --raw' and
`cat /proc/kmsg' output formats:
- facility and log level
- time stamp (depends on printk_time/PRINTK_TIME)
- message
<%u>[time stamp] text\n
NOTE: while Kevin and Fengguang talk about "dmesg --raw", it's actually
"dmesg -S --raw" that always prints messages in syslog format [per
Petr Mladek]. Running "dmesg --raw" may produce output in non-syslog
format sometimes. console_msg_format=syslog enables syslog format,
thus in documentation we mention "dmesg -S --raw", not "dmesg --raw".
Per Kevin Hilman:
: Right now we can get this info from a "dmesg --raw" after bootup,
: but it would be really nice in certain automation frameworks to
: have a kernel command-line option to enable printing of loglevels
: in default boot log.
:
: This is especially useful when ingesting kernel logs into advanced
: search/analytics frameworks (I'm playing with and ELK stack: Elastic
: Search, Logstash, Kibana).
:
: The other important reason for having this on the command line is that
: for testing linux-next (and other bleeding edge developer branches),
: it's common that we never make it to userspace, so can't even run
: "dmesg --raw" (or equivalent.) So we really want this on the primary
: boot (serial) console.
Per Fengguang Wu, 0day scripts should quickly benefit from that
feature, because they will be able to switch to a more reliable
parsing, based on messages' facility and log levels [1]:
`#{grep} -a -E -e '^<[0123]>' -e '^kern :(err |crit |alert |emerg )'
instead of doing text pattern matching
`#{grep} -a -F -f /lkp/printk-error-messages #{kmsg_file} |
grep -a -v -E -f #{LKP_SRC}/etc/oops-pattern |
grep -a -v -F -f #{LKP_SRC}/etc/kmsg-blacklist`
[1] https://github.com/fengguang/lkp-tests/blob/master/lib/dmesg.rb
Link: http://lkml.kernel.org/r/20171221054149.4398-1-sergey.senozhatsky@gmail.com
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reviewed-by: Fengguang Wu <fengguang.wu@intel.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
|
|
|
Ingo Molnar
|
475c5ee193 |
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney: - Updates to use cond_resched() instead of cond_resched_rcu_qs() where feasible (currently everywhere except in kernel/rcu and in kernel/torture.c). Also a couple of fixes to avoid sending IPIs to offline CPUs. - Updates to simplify RCU's dyntick-idle handling. - Updates to remove almost all uses of smp_read_barrier_depends() and read_barrier_depends(). - Miscellaneous fixes. - Torture-test updates. Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
|
Linus Torvalds
|
f39d7d78b7 |
Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A couple of fixlets for x86:
- Fix the ESPFIX double fault handling for 5-level pagetables
- Fix the commandline parsing for 'apic=' on 32bit systems and update
documentation
- Make zombie stack traces reliable
- Fix kexec with stack canary
- Fix the delivery mode for APICs which was missed when the x86
vector management was converted to single target delivery. Caused a
regression due to the broken hardware which ignores affinity
settings in lowest prio delivery mode.
- Unbreak modules when AMD memory encryption is enabled
- Remove an unused parameter of prepare_switch_to"
* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/apic: Switch all APICs to Fixed delivery mode
x86/apic: Update the 'apic=' description of setting APIC driver
x86/apic: Avoid wrong warning when parsing 'apic=' in X86-32 case
x86-32: Fix kexec with stack canary (CONFIG_CC_STACKPROTECTOR)
x86: Remove unused parameter of prepare_switch_to
x86/stacktrace: Make zombie stack traces reliable
x86/mm: Unbreak modules that use the DMA API
x86/build: Make isoimage work on Debian
x86/espfix/64: Fix espfix double-fault handling on 5-level systems
|
|
|
Linus Torvalds
|
4c470317f9 |
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Thomas Gleixner: "Three patches addressing the fallout of the CPU_ISOLATION changes especially with NO_HZ_FULL plus documentation of boot parameter dependency" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/isolation: Document boot parameters dependency on CONFIG_CPU_ISOLATION=y sched/isolation: Enable CONFIG_CPU_ISOLATION=y by default sched/isolation: Make CONFIG_NO_HZ_FULL select CONFIG_CPU_ISOLATION |
|
|
Linus Torvalds
|
8371e5a0e9 |
Char/Misc fixes for 4.15-rc6
Here are six small fixes of some of the char/misc drivers that have been sent in to resolve reported issues. Nothing major, a binder use-after-free fix, some thunderbolt bugfixes, a hyper-v bugfix, and an nvmem driver fix. All of these have been in linux-next with no reported issues for a while. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCWkjKDw8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ymkNACgmepGEvd9OJKji+rDj8ADo8lJ7BwAoLiCO22P wwwpJ7gWnt8N2Red6xcO =Jmx1 -----END PGP SIGNATURE----- Merge tag 'char-misc-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc fixes from Greg KH: "Here are six small fixes of some of the char/misc drivers that have been sent in to resolve reported issues. Nothing major, a binder use-after-free fix, some thunderbolt bugfixes, a hyper-v bugfix, and an nvmem driver fix. All of these have been in linux-next with no reported issues for a while" * tag 'char-misc-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: nvmem: meson-mx-efuse: fix reading from an offset other than 0 binder: fix proc->files use-after-free vmbus: unregister device_obj->channels_kset thunderbolt: Mask ring interrupt properly when polling starts MAINTAINERS: Add thunderbolt.rst to the Thunderbolt driver entry thunderbolt: Make pathname to force_power shorter |
|
|
Linus Torvalds
|
5aa90a8458 |
Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 page table isolation updates from Thomas Gleixner:
"This is the final set of enabling page table isolation on x86:
- Infrastructure patches for handling the extra page tables.
- Patches which map the various bits and pieces which are required to
get in and out of user space into the user space visible page
tables.
- The required changes to have CR3 switching in the entry/exit code.
- Optimizations for the CR3 switching along with documentation how
the ASID/PCID mechanism works.
- Updates to dump pagetables to cover the user space page tables for
W+X scans and extra debugfs files to analyze both the kernel and
the user space visible page tables
The whole functionality is compile time controlled via a config switch
and can be turned on/off on the command line as well"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
x86/ldt: Make the LDT mapping RO
x86/mm/dump_pagetables: Allow dumping current pagetables
x86/mm/dump_pagetables: Check user space page table for WX pages
x86/mm/dump_pagetables: Add page table directory to the debugfs VFS hierarchy
x86/mm/pti: Add Kconfig
x86/dumpstack: Indicate in Oops whether PTI is configured and enabled
x86/mm: Clarify the whole ASID/kernel PCID/user PCID naming
x86/mm: Use INVPCID for __native_flush_tlb_single()
x86/mm: Optimize RESTORE_CR3
x86/mm: Use/Fix PCID to optimize user/kernel switches
x86/mm: Abstract switching CR3
x86/mm: Allow flushing for future ASID switches
x86/pti: Map the vsyscall page if needed
x86/pti: Put the LDT in its own PGD if PTI is on
x86/mm/64: Make a full PGD-entry size hole in the memory map
x86/events/intel/ds: Map debug buffers in cpu_entry_area
x86/cpu_entry_area: Add debugstore entries to cpu_entry_area
x86/mm/pti: Map ESPFIX into user space
x86/mm/pti: Share entry text PMD
x86/entry: Align entry text section to PMD boundary
...
|
|
|
Dou Liyang
|
64e05d118e |
x86/apic: Update the 'apic=' description of setting APIC driver
There are two consumers of apic=: the APIC debug level and the low level generic architecture code, but Linux just documented the first one. Append the second description. Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: peterz@infradead.org Cc: rdunlap@infradead.org Cc: corbet@lwn.net Link: https://lkml.kernel.org/r/20171204040313.24824-2-douly.fnst@cn.fujitsu.com |
|
|
Borislav Petkov
|
41f4c20b57 |
x86/pti: Add the pti= cmdline option and documentation
Keep the "nopti" optional for traditional reasons. [ tglx: Don't allow force on when running on XEN PV and made 'on' printout conditional ] Requested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andy Lutomirski <luto@kernel.org> Cc: Andy Lutomirsky <luto@kernel.org> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Laight <David.Laight@aculab.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Eduardo Valentin <eduval@amazon.com> Cc: Greg KH <gregkh@linuxfoundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will.deacon@arm.com> Cc: aliguori@amazon.com Cc: daniel.gruss@iaik.tugraz.at Cc: hughd@google.com Cc: keescook@google.com Link: https://lkml.kernel.org/r/20171212133952.10177-1-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
|
Thomas Gleixner
|
aa8c6248f8 |
x86/mm/pti: Add infrastructure for page table isolation
Add the initial files for kernel page table isolation, with a minimal init function and the boot time detection for this misfeature. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Borislav Petkov <bp@suse.de> Cc: Andy Lutomirski <luto@kernel.org> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Laight <David.Laight@aculab.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Eduardo Valentin <eduval@amazon.com> Cc: Greg KH <gregkh@linuxfoundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will.deacon@arm.com> Cc: aliguori@amazon.com Cc: daniel.gruss@iaik.tugraz.at Cc: hughd@google.com Cc: keescook@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
|
Bjorn Helgaas
|
ffd2e8df8d |
resource: Set type of "reserve=" user-specified resources
When we reserve regions because the user specified a "reserve=" parameter, set the resource type to either IORESOURCE_IO (for regions below 0x10000) or IORESOURCE_MEM. The test for 0x10000 is just a heuristic; obviously there can be memory below 0x10000 as well. Improve documentation of the "reserve=" parameter. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> |
|
|
Frederic Weisbecker
|
d94d105329 |
sched/isolation: Document boot parameters dependency on CONFIG_CPU_ISOLATION=y
The "isolcpus=" and "nohz_full=" boot parameters depend on CPU Isolation support. Let's document that. Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Christoph Lameter <cl@linux.com> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wanpeng Li <kernellwp@gmail.com> Cc: kernel test robot <xiaolong.ye@intel.com> Link: http://lkml.kernel.org/r/1513275507-29200-4-git-send-email-frederic@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
|
Andy Shevchenko
|
cce1fea50e |
thunderbolt: Make pathname to force_power shorter
WMI is the bus inside kernel, so, we may access the GUID via /sys/bus/wmi instead of doing this through /sys/devices path. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Mario Limonciello <mario.limonciello@dell.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
|
|
Prarit Bhargava
|
0f27cff859 |
ACPI: sysfs: Make ACPI GPE mask kernel parameter cover all GPEs
The acpi_mask_gpe= kernel parameter documentation states that the range
of mask is 128 GPEs (0x00 to 0x7F). The acpi_masked_gpes mask is a u64 so
only 64 GPEs (0x00 to 0x3F) can really be masked.
Use a bitmap of size 0xFF instead of a u64 for the GPE mask so 256
GPEs can be masked.
Fixes:
|
|
|
Scott Wood
|
d22881dc13 |
Documentation: Better document the hardlockup_panic sysctl
Commit
|
|
|
Jonathan Neuschäfer
|
51e028e44e |
Documentation: mono: Update links and s/CVS/Git/
The URLs in mono.rst redirect to pages on www.mono-project.com, so let's update them. I took the liberty to update the compilation instructions to the Linux-specific version, because readers of the kernel documentation will most likely use Linux. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Paul E. McKenney
|
a2f2577d96 |
torture: Eliminate torture_runnable and perf_runnable
The purpose of torture_runnable is to allow rcutorture and locktorture to be started and stopped via sysfs when they are built into the kernel (as in not compiled as loadable modules). However, the 0444 permissions for both instances of torture_runnable prevent this use case from ever being put into practice. Given that there have been no complaints about this deficiency, it is reasonable to conclude that no one actually makes use of this sysfs capability. The perf_runnable module parameter for rcuperf is in the same situation. This commit therefore removes both torture_runnable instances as well as perf_runnable. Reported-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> |
|
|
Rafael J. Wysocki
|
57044031b0 |
ACPI / PM: Make it possible to ignore the system sleep blacklist
The ACPI code supporting system transitions to sleep states uses
an internal blacklist to apply special handling to some machines
reported to behave incorrectly in some ways.
However, some entries of that blacklist cover problematic as well as
non-problematic systems, so give the users of the latter a chance to
ignore the blacklist and run their systems in the default way by
adding acpi_sleep=nobl to the kernel command line.
For example, that allows the users of Dell XPS13 9360 systems not
affected by the issue that caused the blacklist entry for this
machine to be added by commit
|
|
|
Linus Torvalds
|
7753ea0964 |
Trimmed second batch of KVM changes for Linux 4.15
* GICv4 Support for KVM/ARM
All ARM patches were in next-20171113. I have postponed most x86 fixes
to 4.15-rc2 and UMIP to 4.16, but there are fixes that would be good to
have already in 4.15-rc1:
* re-introduce support for CPUs without virtual NMI (cc stable)
and allow testing of KVM without virtual NMI on available CPUs
* fix long-standing performance issues with assigned devices on AMD
(cc stable)
-----BEGIN PGP SIGNATURE-----
iQEcBAABCAAGBQJaGECGAAoJEED/6hsPKofoT08H/AuaMi8qprw2BNpVBbQxWRWM
O4WPk7yz1zB4SkdRNrPzCMBy+qoK7FcV/3BpsFPuQS4NHQ+GvQ87N/7tUbouVyl6
CuPGJMCnNzMQ8GvLOJgB1/sz+uW5W/ph3y8kv1UP3/hNCZU4fqukoUeLroOH/wr6
N3bSY8bok7ycdpgybHmbUHY0Yk4IUk3m0RXWY9U5Jl3sjoNEwCw3pWdrq9Swfs/6
W8QJRdE4Z6KHPqW5sRnPj24IpoUpCxu+IT+gPuGlDUCN/h3sfhYvMS6GgDrCjiiZ
2z1TwaIAo+wGjlBQzGmyTUjUPjbGew+f3ixBlf2BtmNutX+tX2qsVfl1NKXYTto=
=GGge
-----END PGP SIGNATURE-----
Merge tag 'kvm-4.15-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Radim Krčmář:
"Trimmed second batch of KVM changes for Linux 4.15:
- GICv4 Support for KVM/ARM
- re-introduce support for CPUs without virtual NMI (cc stable) and
allow testing of KVM without virtual NMI on available CPUs
- fix long-standing performance issues with assigned devices on AMD
(cc stable)"
* tag 'kvm-4.15-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (30 commits)
kvm: vmx: Allow disabling virtual NMI support
kvm: vmx: Reinstate support for CPUs without virtual NMI
KVM: SVM: obey guest PAT
KVM: arm/arm64: Don't queue VLPIs on INV/INVALL
KVM: arm/arm64: Fix GICv4 ITS initialization issues
KVM: arm/arm64: GICv4: Theory of operations
KVM: arm/arm64: GICv4: Enable VLPI support
KVM: arm/arm64: GICv4: Prevent userspace from changing doorbell affinity
KVM: arm/arm64: GICv4: Prevent a VM using GICv4 from being saved
KVM: arm/arm64: GICv4: Enable virtual cpuif if VLPIs can be delivered
KVM: arm/arm64: GICv4: Hook vPE scheduling into vgic flush/sync
KVM: arm/arm64: GICv4: Use the doorbell interrupt as an unblocking source
KVM: arm/arm64: GICv4: Add doorbell interrupt handling
KVM: arm/arm64: GICv4: Use pending_last as a scheduling hint
KVM: arm/arm64: GICv4: Handle INVALL applied to a vPE
KVM: arm/arm64: GICv4: Propagate property updates to VLPIs
KVM: arm/arm64: GICv4: Handle MOVALL applied to a vPE
KVM: arm/arm64: GICv4: Handle CLEAR applied to a VLPI
KVM: arm/arm64: GICv4: Propagate affinity changes to the physical ITS
KVM: arm/arm64: GICv4: Unmap VLPI when freeing an LPI
...
|
|
|
Linus Torvalds
|
1d3bc6363a |
A few late-arriving docs updates that have no real reason to wait. There's
a new "Co-Developed-by" tag described by Greg, and a build enhancement from Willy to generate docs warnings during a kernel build (but only when additional warnings have been requested in general). -----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJaFaXjAAoJEI3ONVYwIuV6AXAQAMDinEQQBxNJmO/PkQrIxT4t sgbLfI+Sd9zD/lEb9aC5e99XYqw+SH0H9xtEcOrhwx+fjuzkKa6NKLPWjopGzVxH CM+N7lCE3AFuzbBCmcQvQyEelQg+p7rsY+2MGLYxMZINnaHFgTa1lvamcE/wKu5d CSXs1K2TwFQEpippYlzTmiWU1Rt3gWKGwtBFgLtikSBqiS3HVr4yn7dgm1WTEpVo IZPQYoglHjb8vL/vnVDDsfu1PW6Q1uE1aBSgTFBgFIv3UXJBBSlfWQJ7MQsD12Ww ZkkAxssFm6TRa87mtgd68Du0Ebg4wZQJG9fizCSy6yIh1ExYxvG0rUmqGrZ1rRYu 4F+hukXINn7OK5L2laKNQT8ZWCPP+RoN6YUQpz2dhXC3nULZbd5GI9y8pQTdZjmK p39SIovicQltlw8ap9MkzTKxm4mvLo/wjFWhQT4qH2QENKO8uSqA9BpLt5a1gJU5 dSLKDElph5EhliQAQfN/wXdPnTzSaGovele23zTTOLu2vr2JUSnBWWwiaOwuTHRQ OEdzxQceoINnc/iqC1qt8F/57E8BT76YedAlmsn77umTXq3mq28wkd1RCRFcjqz5 KeqrvC5WMSbWZXZDxow7Pr+CPONUy4WpqVbHbwcQ4V8zlFfGjtQdR6zKN88Mb364 4oJpUwUMz36HchZpi1Tx =ydAe -----END PGP SIGNATURE----- Merge tag 'docs-4.15-2' of git://git.lwn.net/linux Pull documentation updates from Jonathan Corbet: "A few late-arriving docs updates that have no real reason to wait. There's a new "Co-Developed-by" tag described by Greg, and a build enhancement from Willy to generate docs warnings during a kernel build (but only when additional warnings have been requested in general)" * tag 'docs-4.15-2' of git://git.lwn.net/linux: Add optional check for bad kernel-doc comments Documentation: fix profile= options in kernel-parameters.txt documentation/svga.txt: update outdated file kokr/memory-barriers.txt: Fix typo in paring example kokr/memory-barriers/txt: Replace uses of "transitive" Documentation/process: add Co-Developed-by: tag for patches with multiple authors |
|
|
Randy Dunlap
|
e7e61fc0ba |
Documentation: fix profile= options in kernel-parameters.txt
Correctly the formatting of several additions to the profile= option that have been added by using <profiletype> and listing the choices for it. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Linus Torvalds
|
07c455ee22 |
platform-drivers-x86 for v4.15-1
For this cycle we have quite an update for the Dell SMBIOS driver including WMI work to provide an interface for SMBIOS tokens via sysfs and WMI support for 2017+ Dell laptop models. SMM dispatcher code is split into a separate driver followed by a new WMI dispatcher. The latter provides a character device interface to user space. The pull request contains a merge of immutable branch from Wolfram Sang in order to apply a dependent fix to the Intel CherryTrail Battery Management driver. Other Intel drivers got a lot of cleanups. The Turbo Boost Max 3.0 support is added for Intel Skylake. Peaq WMI hotkeys driver gets its own maintainer and white list of supported models. Silead DMI is expanded to support few additional platforms. Tablet mode via GMMS ACPI method is added to support some ThinkPad tablets. Two commits appear here which were previously merged during the v4.14-rcX cycle: - |
|
|
Randy Dunlap
|
8c188759fb |
dynamic_debug documentation: minor fixes
Fix minor typo. Fix missing words in explaining parsing of last line number. Link: http://lkml.kernel.org/r/ebb7ff42-4945-103f-d5b4-f07a6f3343a7@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jason Baron <jbaron@akamai.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
|
|
Paolo Bonzini
|
fc3790fa07 |
GICv4 Support for KVM/ARM for v4.15
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJaBYxhAAoJEEtpOizt6ddyOc4H/1qADSdnZFVVE5v15Y+E8HLv EOXAo/yYJg26fY/TBIXo7gxSZFCd0Ah703aucPGTRFyOb8t0VqIvI07rS1u4sKPp mxfidYIZwLMibgno8NBdWB2mFeXrNlWTmwNt/IoO0iMn7IGqQZ/FZdf3GmWEVEsG CU/DrQRXArJqS77NuZtkhhZOKBxB0lQNv52DkVgy/QlcBagAI14hbezkLQAco4oT NUC4GyXn9yHzpTfhuQXv5hLd4xCqg9e51OgYNSL9oC/JXSByd7edQuqpd4fmnG4Y qoDPJ11wmkuUKEDaGbC7nZWIaiVc/TfJy2Hwj3bUVwQFbopCeYhQqCDUSKftncA= =o4u7 -----END PGP SIGNATURE----- Merge tag 'kvm-arm-gicv4-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD GICv4 Support for KVM/ARM for v4.15 |
|
|
Linus Torvalds
|
5b0e2cb020 |
powerpc updates for 4.15
Non-highlights:
- Five fixes for the >128T address space handling, both to fix bugs in our
implementation and to bring the semantics exactly into line with x86.
Highlights:
- Support for a new OPAL call on bare metal machines which gives us a true NMI
(ie. is not masked by MSR[EE]=0) for debugging etc.
- Support for Power9 DD2 in the CXL driver.
- Improvements to machine check handling so that uncorrectable errors can be
reported into the generic memory_failure() machinery.
- Some fixes and improvements for VPHN, which is used under PowerVM to notify
the Linux partition of topology changes.
- Plumbing to enable TM (transactional memory) without suspend on some Power9
processors (PPC_FEATURE2_HTM_NO_SUSPEND).
- Support for emulating vector loads form cache-inhibited memory, on some
Power9 revisions.
- Disable the fast-endian switch "syscall" by default (behind a CONFIG), we
believe it has never had any users.
- A major rework of the API drivers use when initiating and waiting for long
running operations performed by OPAL firmware, and changes to the
powernv_flash driver to use the new API.
- Several fixes for the handling of FP/VMX/VSX while processes are using
transactional memory.
- Optimisations of TLB range flushes when using the radix MMU on Power9.
- Improvements to the VAS facility used to access coprocessors on Power9, and
related improvements to the way the NX crypto driver handles requests.
- Implementation of PMEM_API and UACCESS_FLUSHCACHE for 64-bit.
Thanks to:
Alexey Kardashevskiy, Alistair Popple, Allen Pais, Andrew Donnellan, Aneesh
Kumar K.V, Arnd Bergmann, Balbir Singh, Benjamin Herrenschmidt, Breno Leitao,
Christophe Leroy, Christophe Lombard, Cyril Bur, Frederic Barrat, Gautham R.
Shenoy, Geert Uytterhoeven, Guilherme G. Piccoli, Gustavo Romero, Haren
Myneni, Joel Stanley, Kamalesh Babulal, Kautuk Consul, Markus Elfring, Masami
Hiramatsu, Michael Bringmann, Michael Neuling, Michal Suchanek, Naveen N. Rao,
Nicholas Piggin, Oliver O'Halloran, Paul Mackerras, Pedro Miraglia Franco de
Carvalho, Philippe Bergheaud, Sandipan Das, Seth Forshee, Shriya, Stephen
Rothwell, Stewart Smith, Sukadev Bhattiprolu, Tyrel Datwyler, Vaibhav Jain,
Vaidyanathan Srinivasan, William A. Kennington III.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=Rq81
-----END PGP SIGNATURE-----
Merge tag 'powerpc-4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"A bit of a small release, I suspect in part due to me travelling for
KS. But my backlog of patches to review is smaller than usual, so I
think in part folks just didn't send as much this cycle.
Non-highlights:
- Five fixes for the >128T address space handling, both to fix bugs
in our implementation and to bring the semantics exactly into line
with x86.
Highlights:
- Support for a new OPAL call on bare metal machines which gives us a
true NMI (ie. is not masked by MSR[EE]=0) for debugging etc.
- Support for Power9 DD2 in the CXL driver.
- Improvements to machine check handling so that uncorrectable errors
can be reported into the generic memory_failure() machinery.
- Some fixes and improvements for VPHN, which is used under PowerVM
to notify the Linux partition of topology changes.
- Plumbing to enable TM (transactional memory) without suspend on
some Power9 processors (PPC_FEATURE2_HTM_NO_SUSPEND).
- Support for emulating vector loads form cache-inhibited memory, on
some Power9 revisions.
- Disable the fast-endian switch "syscall" by default (behind a
CONFIG), we believe it has never had any users.
- A major rework of the API drivers use when initiating and waiting
for long running operations performed by OPAL firmware, and changes
to the powernv_flash driver to use the new API.
- Several fixes for the handling of FP/VMX/VSX while processes are
using transactional memory.
- Optimisations of TLB range flushes when using the radix MMU on
Power9.
- Improvements to the VAS facility used to access coprocessors on
Power9, and related improvements to the way the NX crypto driver
handles requests.
- Implementation of PMEM_API and UACCESS_FLUSHCACHE for 64-bit.
Thanks to: Alexey Kardashevskiy, Alistair Popple, Allen Pais, Andrew
Donnellan, Aneesh Kumar K.V, Arnd Bergmann, Balbir Singh, Benjamin
Herrenschmidt, Breno Leitao, Christophe Leroy, Christophe Lombard,
Cyril Bur, Frederic Barrat, Gautham R. Shenoy, Geert Uytterhoeven,
Guilherme G. Piccoli, Gustavo Romero, Haren Myneni, Joel Stanley,
Kamalesh Babulal, Kautuk Consul, Markus Elfring, Masami Hiramatsu,
Michael Bringmann, Michael Neuling, Michal Suchanek, Naveen N. Rao,
Nicholas Piggin, Oliver O'Halloran, Paul Mackerras, Pedro Miraglia
Franco de Carvalho, Philippe Bergheaud, Sandipan Das, Seth Forshee,
Shriya, Stephen Rothwell, Stewart Smith, Sukadev Bhattiprolu, Tyrel
Datwyler, Vaibhav Jain, Vaidyanathan Srinivasan, and William A.
Kennington III"
* tag 'powerpc-4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (151 commits)
powerpc/64s: Fix Power9 DD2.0 workarounds by adding DD2.1 feature
powerpc/64s: Fix masking of SRR1 bits on instruction fault
powerpc/64s: mm_context.addr_limit is only used on hash
powerpc/64s/radix: Fix 128TB-512TB virtual address boundary case allocation
powerpc/64s/hash: Allow MAP_FIXED allocations to cross 128TB boundary
powerpc/64s/hash: Fix fork() with 512TB process address space
powerpc/64s/hash: Fix 128TB-512TB virtual address boundary case allocation
powerpc/64s/hash: Fix 512T hint detection to use >= 128T
powerpc: Fix DABR match on hash based systems
powerpc/signal: Properly handle return value from uprobe_deny_signal()
powerpc/fadump: use kstrtoint to handle sysfs store
powerpc/lib: Implement UACCESS_FLUSHCACHE API
powerpc/lib: Implement PMEM API
powerpc/powernv/npu: Don't explicitly flush nmmu tlb
powerpc/powernv/npu: Use flush_all_mm() instead of flush_tlb_mm()
powerpc/powernv/idle: Round up latency and residency values
powerpc/kprobes: refactor kprobe_lookup_name for safer string operations
powerpc/kprobes: Blacklist emulate_update_regs() from kprobes
powerpc/kprobes: Do not disable interrupts for optprobes and kprobes_on_ftrace
powerpc/kprobes: Disable preemption before invoking probe handler for optprobes
...
|
|
|
Linus Torvalds
|
e60e1ee606 |
main drm pull request for v4.15
-----BEGIN PGP SIGNATURE-----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=xVV2
-----END PGP SIGNATURE-----
Merge tag 'drm-for-v4.15' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
"This is the main drm pull request for v4.15.
Core:
- Atomic object lifetime fixes
- Atomic iterator improvements
- Sparse/smatch fixes
- Legacy kms ioctls to be interruptible
- EDID override improvements
- fb/gem helper cleanups
- Simple outreachy patches
- Documentation improvements
- Fix dma-buf rcu races
- DRM mode object leasing for improving VR use cases.
- vgaarb improvements for non-x86 platforms.
New driver:
- tve200: Faraday Technology TVE200 block.
This "TV Encoder" encodes a ITU-T BT.656 stream and can be found in
the StorLink SL3516 (later Cortina Systems CS3516) as well as the
Grain Media GM8180.
New bridges:
- SiI9234 support
New panels:
- S6E63J0X03, OTM8009A, Seiko 43WVF1G, 7" rpi touch panel, Toshiba
LT089AC19000, Innolux AT043TN24
i915:
- Remove Coffeelake from alpha support
- Cannonlake workarounds
- Infoframe refactoring for DisplayPort
- VBT updates
- DisplayPort vswing/emph/buffer translation refactoring
- CCS fixes
- Restore GPU clock boost on missed vblanks
- Scatter list updates for userptr allocations
- Gen9+ transition watermarks
- Display IPC (Isochronous Priority Control)
- Private PAT management
- GVT: improved error handling and pci config sanitizing
- Execlist refactoring
- Transparent Huge Page support
- User defined priorities support
- HuC/GuC firmware refactoring
- DP MST fixes
- eDP power sequencing fixes
- Use RCU instead of stop_machine
- PSR state tracking support
- Eviction fixes
- BDW DP aux channel timeout fixes
- LSPCON fixes
- Cannonlake PLL fixes
amdgpu:
- Per VM BO support
- Powerplay cleanups
- CI powerplay support
- PASID mgr for kfd
- SR-IOV fixes
- initial GPU reset for vega10
- Prime mmap support
- TTM updates
- Clock query interface for Raven
- Fence to handle ioctl
- UVD encode ring support on Polaris
- Transparent huge page DMA support
- Compute LRU pipe tweaks
- BO flag to allow buffers to opt out of implicit sync
- CTX priority setting API
- VRAM lost infrastructure plumbing
qxl:
- fix flicker since atomic rework
amdkfd:
- Further improvements from internal AMD tree
- Usermode events
- Drop radeon support
nouveau:
- Pascal temperature sensor support
- Improved BAR2 handling
- MMU rework to support Pascal MMU
exynos:
- Improved HDMI/mixer support
- HDMI audio interface support
tegra:
- Prep work for tegra186
- Cleanup/fixes
msm:
- Preemption support for a5xx
- Display fixes for 8x96 (snapdragon 820)
- Async cursor plane fixes
- FW loading rework
- GPU debugging improvements
vc4:
- Prep for DSI panels
- fix T-format tiling scanout
- New madvise ioctl
Rockchip:
- LVDS support
omapdrm:
- omap4 HDMI CEC support
etnaviv:
- GPU performance counters groundwork
sun4i:
- refactor driver load + TCON backend
- HDMI improvements
- A31 support
- Misc fixes
udl:
- Probe/EDID read fixes.
tilcdc:
- Misc fixes.
pl111:
- Support more variants
adv7511:
- Improve EDID handling.
- HDMI CEC support
sii8620:
- Add remote control support"
* tag 'drm-for-v4.15' of git://people.freedesktop.org/~airlied/linux: (1480 commits)
drm/rockchip: analogix_dp: Use mutex rather than spinlock
drm/mode_object: fix documentation for object lookups.
drm/i915: Reorder context-close to avoid calling i915_vma_close() under RCU
drm/i915: Move init_clock_gating() back to where it was
drm/i915: Prune the reservation shared fence array
drm/i915: Idle the GPU before shinking everything
drm/i915: Lock llist_del_first() vs llist_del_all()
drm/i915: Calculate ironlake intermediate watermarks correctly, v2.
drm/i915: Disable lazy PPGTT page table optimization for vGPU
drm/i915/execlists: Remove the priority "optimisation"
drm/i915: Filter out spurious execlists context-switch interrupts
drm/amdgpu: use irq-safe lock for kiq->ring_lock
drm/amdgpu: bypass lru touch for KIQ ring submission
drm/amdgpu: Potential uninitialized variable in amdgpu_vm_update_directories()
drm/amdgpu: potential uninitialized variable in amdgpu_vce_ring_parse_cs()
drm/amd/powerplay: initialize a variable before using it
drm/amd/powerplay: suppress KASAN out of bounds warning in vega10_populate_all_memory_levels
drm/amd/amdgpu: fix evicted VRAM bo adjudgement condition
drm/vblank: Tune drm_crtc_accurate_vblank_count() WARN down to a debug
drm/rockchip: add CONFIG_OF dependency for lvds
...
|
|
|
Linus Torvalds
|
7c225c69f8 |
Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton: - a few misc bits - ocfs2 updates - almost all of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (131 commits) memory hotplug: fix comments when adding section mm: make alloc_node_mem_map a void call if we don't have CONFIG_FLAT_NODE_MEM_MAP mm: simplify nodemask printing mm,oom_reaper: remove pointless kthread_run() error check mm/page_ext.c: check if page_ext is not prepared writeback: remove unused function parameter mm: do not rely on preempt_count in print_vma_addr mm, sparse: do not swamp log with huge vmemmap allocation failures mm/hmm: remove redundant variable align_end mm/list_lru.c: mark expected switch fall-through mm/shmem.c: mark expected switch fall-through mm/page_alloc.c: broken deferred calculation mm: don't warn about allocations which stall for too long fs: fuse: account fuse_inode slab memory as reclaimable mm, page_alloc: fix potential false positive in __zone_watermark_ok mm: mlock: remove lru_add_drain_all() mm, sysctl: make NUMA stats configurable shmem: convert shmem_init_inodecache() to void Unify migrate_pages and move_pages access checks mm, pagevec: rename pagevec drained field ... |
|
|
Levin, Alexander (Sasha Levin)
|
4675ff05de |
kmemcheck: rip it out
Fix up makefiles, remove references, and git rm kmemcheck. Link: http://lkml.kernel.org/r/20171007030159.22241-4-alexander.levin@verizon.com Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Vegard Nossum <vegardno@ifi.uio.no> Cc: Pekka Enberg <penberg@kernel.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Alexander Potapenko <glider@google.com> Cc: Tim Hansen <devtimhansen@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
|
|
Linus Torvalds
|
5bbcc0f595 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
"Highlights:
1) Maintain the TCP retransmit queue using an rbtree, with 1GB
windows at 100Gb this really has become necessary. From Eric
Dumazet.
2) Multi-program support for cgroup+bpf, from Alexei Starovoitov.
3) Perform broadcast flooding in hardware in mv88e6xxx, from Andrew
Lunn.
4) Add meter action support to openvswitch, from Andy Zhou.
5) Add a data meta pointer for BPF accessible packets, from Daniel
Borkmann.
6) Namespace-ify almost all TCP sysctl knobs, from Eric Dumazet.
7) Turn on Broadcom Tags in b53 driver, from Florian Fainelli.
8) More work to move the RTNL mutex down, from Florian Westphal.
9) Add 'bpftool' utility, to help with bpf program introspection.
From Jakub Kicinski.
10) Add new 'cpumap' type for XDP_REDIRECT action, from Jesper
Dangaard Brouer.
11) Support 'blocks' of transformations in the packet scheduler which
can span multiple network devices, from Jiri Pirko.
12) TC flower offload support in cxgb4, from Kumar Sanghvi.
13) Priority based stream scheduler for SCTP, from Marcelo Ricardo
Leitner.
14) Thunderbolt networking driver, from Amir Levy and Mika Westerberg.
15) Add RED qdisc offloadability, and use it in mlxsw driver. From
Nogah Frankel.
16) eBPF based device controller for cgroup v2, from Roman Gushchin.
17) Add some fundamental tracepoints for TCP, from Song Liu.
18) Remove garbage collection from ipv6 route layer, this is a
significant accomplishment. From Wei Wang.
19) Add multicast route offload support to mlxsw, from Yotam Gigi"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2177 commits)
tcp: highest_sack fix
geneve: fix fill_info when link down
bpf: fix lockdep splat
net: cdc_ncm: GetNtbFormat endian fix
openvswitch: meter: fix NULL pointer dereference in ovs_meter_cmd_reply_start
netem: remove unnecessary 64 bit modulus
netem: use 64 bit divide by rate
tcp: Namespace-ify sysctl_tcp_default_congestion_control
net: Protect iterations over net::fib_notifier_ops in fib_seq_sum()
ipv6: set all.accept_dad to 0 by default
uapi: fix linux/tls.h userspace compilation error
usbnet: ipheth: prevent TX queue timeouts when device not ready
vhost_net: conditionally enable tx polling
uapi: fix linux/rxrpc.h userspace compilation errors
net: stmmac: fix LPI transitioning for dwmac4
atm: horizon: Fix irq release error
net-sysfs: trigger netlink notification on ifalias change via sysfs
openvswitch: Using kfree_rcu() to simplify the code
openvswitch: Make local function ovs_nsh_key_attr_size() static
openvswitch: Fix return value check in ovs_meter_cmd_features()
...
|
|
|
Linus Torvalds
|
670310dfba |
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq core updates from Thomas Gleixner:
"A rather large update for the interrupt core code and the irq chip drivers:
- Add a new bitmap matrix allocator and supporting changes, which is
used to replace the x86 vector allocator which comes with separate
pull request. This allows to replace the convoluted nested loop
allocation function in x86 with a facility which supports the
recently added property of managed interrupts proper and allows to
switch to a best effort vector reservation scheme, which addresses
problems with vector exhaustion.
- A large update to the ARM GIC-V3-ITS driver adding support for
range selectors.
- New interrupt controllers:
- Meson and Meson8 GPIO
- BCM7271 L2
- Socionext EXIU
If you expected that this will stop at some point, I have to
disappoint you. There are new ones posted already. Sigh!
- STM32 interrupt controller support for new platforms.
- A pile of fixes, cleanups and updates to the MIPS GIC driver
- The usual small fixes, cleanups and updates all over the place.
Most visible one is to move the irq chip drivers Kconfig switches
into a separate Kconfig menu"
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (70 commits)
genirq: Fix type of shifting literal 1 in __setup_irq()
irqdomain: Drop pointless NULL check in virq_debug_show_one
genirq/proc: Return proper error code when irq_set_affinity() fails
irq/work: Use llist_for_each_entry_safe
irqchip: mips-gic: Print warning if inherited GIC base is used
irqchip/mips-gic: Add pr_fmt and reword pr_* messages
irqchip/stm32: Move the wakeup on interrupt mask
irqchip/stm32: Fix initial values
irqchip/stm32: Add stm32h7 support
dt-bindings/interrupt-controllers: Add compatible string for stm32h7
irqchip/stm32: Add multi-bank management
irqchip/stm32: Select GENERIC_IRQ_CHIP
irqchip/exiu: Add support for Socionext Synquacer EXIU controller
dt-bindings: Add description of Socionext EXIU interrupt controller
irqchip/gic-v3-its: Fix VPE activate callback return value
irqchip: mips-gic: Make IPI bitmaps static
irqchip: mips-gic: Share register writes in gic_set_type()
irqchip: mips-gic: Remove gic_vpes variable
irqchip: mips-gic: Use num_possible_cpus() to reserve IPIs
irqchip: mips-gic: Configure EIC when CPUs come online
...
|
|
|
Linus Torvalds
|
3e2014637c |
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"The main updates in this cycle were:
- Group balancing enhancements and cleanups (Brendan Jackman)
- Move CPU isolation related functionality into its separate
kernel/sched/isolation.c file, with related 'housekeeping_*()'
namespace and nomenclature et al. (Frederic Weisbecker)
- Improve the interactive/cpu-intense fairness calculation (Josef
Bacik)
- Improve the PELT code and related cleanups (Peter Zijlstra)
- Improve the logic of pick_next_task_fair() (Uladzislau Rezki)
- Improve the RT IPI based balancing logic (Steven Rostedt)
- Various micro-optimizations:
- better !CONFIG_SCHED_DEBUG optimizations (Patrick Bellasi)
- better idle loop (Cheng Jian)
- ... plus misc fixes, cleanups and updates"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
sched/core: Optimize sched_feat() for !CONFIG_SCHED_DEBUG builds
sched/sysctl: Fix attributes of some extern declarations
sched/isolation: Document isolcpus= boot parameter flags, mark it deprecated
sched/isolation: Add basic isolcpus flags
sched/isolation: Move isolcpus= handling to the housekeeping code
sched/isolation: Handle the nohz_full= parameter
sched/isolation: Introduce housekeeping flags
sched/isolation: Split out new CONFIG_CPU_ISOLATION=y config from CONFIG_NO_HZ_FULL
sched/isolation: Rename is_housekeeping_cpu() to housekeeping_cpu()
sched/isolation: Use its own static key
sched/isolation: Make the housekeeping cpumask private
sched/isolation: Provide a dynamic off-case to housekeeping_any_cpu()
sched/isolation, watchdog: Use housekeeping_cpumask() instead of ad-hoc version
sched/isolation: Move housekeeping related code to its own file
sched/idle: Micro-optimize the idle loop
sched/isolcpus: Fix "isolcpus=" boot parameter handling when !CONFIG_CPUMASK_OFFSTACK
x86/tsc: Append the 'tsc=' description for the 'tsc=unstable' boot parameter
sched/rt: Simplify the IPI based RT balancing logic
block/ioprio: Use a helper to check for RT prio
sched/rt: Add a helper to test for a RT task
...
|
|
|
Linus Torvalds
|
8e9a2dba86 |
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core locking updates from Ingo Molnar:
"The main changes in this cycle are:
- Another attempt at enabling cross-release lockdep dependency
tracking (automatically part of CONFIG_PROVE_LOCKING=y), this time
with better performance and fewer false positives. (Byungchul Park)
- Introduce lockdep_assert_irqs_enabled()/disabled() and convert
open-coded equivalents to lockdep variants. (Frederic Weisbecker)
- Add down_read_killable() and use it in the VFS's iterate_dir()
method. (Kirill Tkhai)
- Convert remaining uses of ACCESS_ONCE() to
READ_ONCE()/WRITE_ONCE(). Most of the conversion was Coccinelle
driven. (Mark Rutland, Paul E. McKenney)
- Get rid of lockless_dereference(), by strengthening Alpha atomics,
strengthening READ_ONCE() with smp_read_barrier_depends() and thus
being able to convert users of lockless_dereference() to
READ_ONCE(). (Will Deacon)
- Various micro-optimizations:
- better PV qspinlocks (Waiman Long),
- better x86 barriers (Michael S. Tsirkin)
- better x86 refcounts (Kees Cook)
- ... plus other fixes and enhancements. (Borislav Petkov, Juergen
Gross, Miguel Bernal Marin)"
* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (70 commits)
locking/x86: Use LOCK ADD for smp_mb() instead of MFENCE
rcu: Use lockdep to assert IRQs are disabled/enabled
netpoll: Use lockdep to assert IRQs are disabled/enabled
timers/posix-cpu-timers: Use lockdep to assert IRQs are disabled/enabled
sched/clock, sched/cputime: Use lockdep to assert IRQs are disabled/enabled
irq_work: Use lockdep to assert IRQs are disabled/enabled
irq/timings: Use lockdep to assert IRQs are disabled/enabled
perf/core: Use lockdep to assert IRQs are disabled/enabled
x86: Use lockdep to assert IRQs are disabled/enabled
smp/core: Use lockdep to assert IRQs are disabled/enabled
timers/hrtimer: Use lockdep to assert IRQs are disabled/enabled
timers/nohz: Use lockdep to assert IRQs are disabled/enabled
workqueue: Use lockdep to assert IRQs are disabled/enabled
irq/softirqs: Use lockdep to assert IRQs are disabled/enabled
locking/lockdep: Add IRQs disabled/enabled assertion APIs: lockdep_assert_irqs_enabled()/disabled()
locking/pvqspinlock: Implement hybrid PV queued/unfair locks
locking/rwlocks: Fix comments
x86/paravirt: Set up the virt_spin_lock_key after static keys get initialized
block, locking/lockdep: Assign a lock_class per gendisk used for wait_for_completion()
workqueue: Remove now redundant lock acquisitions wrt. workqueue flushes
...
|
|
|
Linus Torvalds
|
6098850e7e |
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar: "The main changes in this cycle are: - Documentation updates - RCU CPU stall-warning updates - Torture-test updates - Miscellaneous fixes Size wise the biggest updates are to documentation. Excluding documentation most of the code increase comes from a single commit which expands debugging" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits) srcu: Add parameters to SRCU docbook comments doc: Rewrite confusing statement about memory barriers memory-barriers.txt: Fix typo in pairing example rcu/segcblist: Include rcupdate.h rcu: Add extended-quiescent-state testing advice rcu: Suppress lockdep false-positive ->boost_mtx complaints rcu: Do not include rtmutex_common.h unconditionally torture: Provide TMPDIR environment variable to specify tmpdir rcutorture: Dump writer stack if stalled rcutorture: Add interrupt-disable capability to stall-warning tests rcu: Suppress RCU CPU stall warnings while dumping trace rcu: Turn off tracing before dumping trace rcu: Make RCU CPU stall warnings check for irq-disabled CPUs sched,rcu: Make cond_resched() provide RCU quiescent state sched: Make resched_cpu() unconditional irq_work: Map irq_work_on_queue() to irq_work_on() in !SMP rcu: Create call_rcu_tasks() kthread at boot time rcu: Fix up pending cbs check in rcu_prepare_for_idle memory-barriers: Rework multicopy-atomicity section memory-barriers: Replace uses of "transitive" ... |
|
|
Linus Torvalds
|
d60a540ac5 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Heiko Carstens:
"Since Martin is on vacation you get the s390 pull request for the
v4.15 merge window this time from me.
Besides a lot of cleanups and bug fixes these are the most important
changes:
- a new regset for runtime instrumentation registers
- hardware accelerated AES-GCM support for the aes_s390 module
- support for the new CEX6S crypto cards
- support for FORTIFY_SOURCE
- addition of missing z13 and new z14 instructions to the in-kernel
disassembler
- generate opcode tables for the in-kernel disassembler out of a
simple text file instead of having to manually maintain those
tables
- fast memset16, memset32 and memset64 implementations
- removal of named saved segment support
- hardware counter support for z14
- queued spinlocks and queued rwlocks implementations for s390
- use the stack_depth tracking feature for s390 BPF JIT
- a new s390_sthyi system call which emulates the sthyi (store
hypervisor information) instruction
- removal of the old KVM virtio transport
- an s390 specific CPU alternatives implementation which is used in
the new spinlock code"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (88 commits)
MAINTAINERS: add virtio-ccw.h to virtio/s390 section
s390/noexec: execute kexec datamover without DAT
s390: fix transactional execution control register handling
s390/bpf: take advantage of stack_depth tracking
s390: simplify transactional execution elf hwcap handling
s390/zcrypt: Rework struct ap_qact_ap_info.
s390/virtio: remove unused header file kvm_virtio.h
s390: avoid undefined behaviour
s390/disassembler: generate opcode tables from text file
s390/disassembler: remove insn_to_mnemonic()
s390/dasd: avoid calling do_gettimeofday()
s390: vfio-ccw: Do not attempt to free no-op, test and tic cda.
s390: remove named saved segment support
s390/archrandom: Reconsider s390 arch random implementation
s390/pci: do not require AIS facility
s390/qdio: sanitize put_indicator
s390/qdio: use atomic_cmpxchg
s390/nmi: avoid using long-displacement facility
s390: pass endianness info to sparse
s390/decompressor: remove informational messages
...
|
|
|
Marc Zyngier
|
a75460547e |
KVM: arm/arm64: GICv4: Enable VLPI support
All it takes is the has_v4 flag to be set in gic_kvm_info as well as "kvm-arm.vgic_v4_enable=1" being passed on the command line for GICv4 to be enabled in KVM. Acked-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> |
|
|
Marc Zyngier
|
0962289b1c |
irqchip/gic: Deal with broken firmware exposing only 4kB of GICv2 CPU interface
There is a lot of broken firmware out there that don't really
expose the information the kernel requires when it comes with dealing
with GICv2:
(1) Firmware that only describes the first 4kB of GICv2
(2) Firmware that describe 128kB of CPU interface, while
the usable portion of the address space is between
60 and 68kB
So far, we only deal with (2). But we have platforms exhibiting
behaviour (1), resulting in two sub-cases:
(a) The GIC is occupying 8kB, as required by the GICv2 architecture
(b) It is actually spread 128kB, and this is likely to be a version
of (2)
This patch tries to work around both (a) and (b) by poking at
the outside of the described memory region, and try to work out
what is actually there. This is of course unsafe, and should
only be enabled if there is no way to otherwise fix the DT provided
by the firmware (we provide a "irqchip.gicv2_force_probe" option
to that effect).
Note that for the time being, we restrict ourselves to GICv2
implementations provided by ARM, since there I have no knowledge
of an alternative implementations. This could be relaxed if such
an implementation comes to light on a broken platform.
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
|
|
|
Frederic Weisbecker
|
b0d40d2b22 |
sched/isolation: Document isolcpus= boot parameter flags, mark it deprecated
Document the latest updates on the isolcpus= boot option. While at it, let's also fix the details about the preferred way to isolate a set of CPUs from the scheduler general domains. Cpusets offer a much better interface to achieve that. Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Christoph Lameter <cl@linux.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Rik van Riel <riel@redhat.com> Cc: Wanpeng Li <kernellwp@gmail.com> Link: http://lkml.kernel.org/r/1509419914-16179-1-git-send-email-frederic@kernel.org [ Clarified the text some more, marked the boot option deprecated. ] Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
|
Christophe JAILLET
|
ed6e26baa7 |
bug-hunting.rst: Fix an example and a typo in a Sphinx tag
- Use the same file name in the explanation and in the example (conex.c vs sonixj.c) - Add a missing ':' in a :ref: tag which leads to incorrect Shpinx output - Add some missing ',' and ';' Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
|
|
Byungchul Park
|
d141babe42 |
locking/lockdep: Add a boot parameter allowing unwind in cross-release and disable it by default
Johan Hovold reported a heavy performance regression caused by lockdep
cross-release:
> Boot time (from "Linux version" to login prompt) had in fact doubled
> since 4.13 where it took 17 seconds (with my current config) compared to
> the 35 seconds I now see with 4.14-rc4.
>
> I quick bisect pointed to lockdep and specifically the following commit:
>
>
|
|
|
Cyril Bur
|
07fd1761e1 |
powerpc/tm: Add commandline option to disable hardware transactional memory
Currently the kernel relies on firmware to inform it whether or not the CPU supports HTM and as long as the kernel was built with CONFIG_PPC_TRANSACTIONAL_MEM=y then it will allow userspace to make use of the facility. There may be situations where it would be advantageous for the kernel to not allow userspace to use HTM, currently the only way to achieve this is to recompile the kernel with CONFIG_PPC_TRANSACTIONAL_MEM=n. This patch adds a simple commandline option so that HTM can be disabled at boot time. Signed-off-by: Cyril Bur <cyrilbur@gmail.com> [mpe: Simplify to a bool, move to prom.c, put doco in the right place. Always disable, regardless of initial state, to avoid user confusion.] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> |
|
|
Vasily Gorbik
|
686140a1a9 |
s390: introduce CPU alternatives
Implement CPU alternatives, which allows to optionally patch newer instructions at runtime, based on CPU facilities availability. A new kernel boot parameter "noaltinstr" disables patching. Current implementation is derived from x86 alternatives. Although ideal instructions padding (when altinstr is longer then oldinstr) is added at compile time, and no oldinstr nops optimization has to be done at runtime. Also couple of compile time sanity checks are done: 1. oldinstr and altinstr must be <= 254 bytes long, 2. oldinstr and altinstr must not have an odd length. alternative(oldinstr, altinstr, facility); alternative_2(oldinstr, altinstr1, facility1, altinstr2, facility2); Both compile time and runtime padding consists of either 6/4/2 bytes nop or a jump (brcl) + 2 bytes nop filler if padding is longer then 6 bytes. .altinstructions and .altinstr_replacement sections are part of __init_begin : __init_end region and are freed after initialization. Signed-off-by: Vasily Gorbik <gor@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> |
|
|
Tom Saeger
|
a405ed85ca |
Documentation: fix media related doc refs
Make media doc refs valid. Signed-off-by: Tom Saeger <tom.saeger@oracle.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |