- allow building and booting DT and non-DT plat-orion SoCs
- catch proper return value for kirkwood_pm_init()
- properly check return of of_iomap to solve boot hangs (mirabox, others)
- remove a compile warning on Armada 370 with non-SMP.
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Merge tag 'mvebu-fixes-3.13-2' of git://git.infradead.org/linux-mvebu into fixes
mvebu fixes for v3.13 (incremental #2)
- allow building and booting DT and non-DT plat-orion SoCs
- catch proper return value for kirkwood_pm_init()
- properly check return of of_iomap to solve boot hangs (mirabox, others)
- remove a compile warning on Armada 370 with non-SMP.
* tag 'mvebu-fixes-3.13-2' of git://git.infradead.org/linux-mvebu:
ARM: mvebu: fix compilation warning on Armada 370 (i.e. non-SMP)
ARM: mvebu: Fix kernel hang in mvebu_soc_id_init() when of_iomap failed
ARM: kirkwood: kirkwood_pm_init() should return void
ARM: orion: provide C-style interrupt handler for MULTI_IRQ_HANDLER
Signed-off-by: Olof Johansson <olof@lixom.net>
Add nodes for the Arasan SDHCI controller to Zynq dts files.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
SMP is a user configurable option, not a hardware feature and should not
be selected.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
DEBUG_FS used to be selected by COMMON_CLK_DEBUG, which was enabled
by tegra_defconfig. However, this config option no longer exists, so
no longer selects DEBUG_FS, and nothing else selects it either. So,
"make tegra_defconfig" no longer enables DEBUG_FS in .config.
Rebuild tegra_defconfig on top of next-20140424, while manually
re-enabling DEBUG_FS.
Reasons for removed entries are:
- I2C_MUX: selected by MEDIA_SUBDRV_AUTOSELECT
- DRM_PANEL: selected by DRM_TEGRA
- NEW_LEDS: selected by many things; at least VT
- LEDS_CLASS: selected by many things; at least VT
- LEDS_TRIGGERS: selected by many things; at least VT
- COMMON_CLK_DEBUG: no longer exists
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
multi_v7_defconfig was missing a large number of options that were in
tegra_defconfig. This patch adds them. The changes fall into the
following categories:
* Enable more Tegra SoC options/drivers.
* Enable more drivers for Tegra boards.
* Enable more options that are useful for running distros.
The patch removes a few lines as well, simply because those options are
now selected by something else, and "make savedefconfig" removes them. I
verified that the options appear in .config after
"make multi_v7_defconfig".
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
This board was missed when converting all the others to proper
abstracted GPIO handling. Fix it up the right way by requesting
and driving GPIO line 0 high through gpiolib to power off the
machine.
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
Commit 78d1632183 deleted the
static mappings of the core modules, but this static map is
still needed on the Integrator/CP (not the Integrator/AP).
Restore the static map on the Integrator/CP.
Reported-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
This allows us to probe the clock controller devices and boot to a
serial console on all DT enabled MSM platforms.
Cc: David Brown <davidb@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
Add the necessary DT nodes to probe the clock controllers on MSM
devices as well as hook up the uart nodes to the clock
controllers. This should allow us to boot to a serial console on
all DT enabled MSM platforms.
Cc: David Brown <davidb@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
Move all OMAP4 PM errata initializations to centralized location in
omap4_pm_init_early. This allows for users to utilize the erratas
in various submodules as needed.
Reported-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
The same workaround as ff999b8a09
"ARM: OMAP4460: Workaround for ROM bug because of CA9 r2pX GIC ..."
need to be applied not only when system is booting, but when MPUSS hits
OSWR state through CPUIdle too. Without this WA the same issue is
reproduced now on boards PandaES and Tablet/Blaze with SOM OMAP4460
when CONFIG_CPU_IDLE is enabled.
After MPUSS has enterred OSWR and waken up:
- GIC distributor became disabled forever
- scheduling is not performed any more
Cc: Kevin Hilman <khilman@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reported-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
Recent changes to retry on ESTALE in linkat
(commit 442e31ca5a)
introduced a mountpoint reference leak and a small memory
leak in case a filesystem link operation returns ESTALE
which is pretty normal for distributed filesystems like
lustre, nfs and so on.
Free old_path in such a case.
[AV: there was another missing path_put() nearby - on the previous
goto retry]
Signed-off-by: Oleg Drokin: <green@linuxhacker.ru>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
- Introduction of PTE_WRITE to distinguish between writable but clean
and truly read-only pages
- FIQs enabling/disabling clean-up (they aren't used on arm64)
- CPU resume fix for the per-cpu offset restoring
- Code comment typos
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pyll ARM64 patches from Catalin Marinas:
- Build fix with DMA_CMA enabled
- Introduction of PTE_WRITE to distinguish between writable but clean
and truly read-only pages
- FIQs enabling/disabling clean-up (they aren't used on arm64)
- CPU resume fix for the per-cpu offset restoring
- Code comment typos
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: mm: Introduce PTE_WRITE
arm64: mm: Remove PTE_BIT_FUNC macro
arm64: FIQs are unused
arm64: mm: fix the function name in comment of cpu_do_switch_mm
arm64: fix build error if DMA_CMA is enabled
arm64: kernel: fix per-cpu offset restore on resume
arm64: mm: fix the function name in comment of __flush_dcache_area
arm64: mm: use ubfm for dcache_line_size
Pull alpha updates from Matt Turner:
"A pair of changes for alpha. One fixes a networking regression, and
the second adds audit syscall support which will help in supporting
systemd"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha:
alpha: fix broken network checksum
alpha: Enable system-call auditing support.
hfsplus was already using the handlers for get and set operations,
and with the removal of can_set_xattr we've now allow operations that
wouldn't otherwise be allowed.
With this we can also centralize the special-casing of the osx.
attrs that don't have prefixes on disk in the osx xattr handlers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Move sync_filesystem() after sb_prepare_remount_readonly(). If writers
sneak in anywhere from sync_filesystem() to sb_prepare_remount_readonly()
it can cause inodes to be dirtied and writeback to occur well after
sys_mount() has completely successfully.
This was spotted by corrupted ubifs filesystems on reboot, but appears
that it can cause issues with any filesystem using writeback.
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
CC: Richard Weinberger <richard@nod.at>
Co-authored-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Ruder <andrew.ruder@elecsyscorp.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Leaving getname() exported when putname() isn't is a bad idea.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Pull media updates from Mauro Carvalho Chehab:
- a new jpeg codec driver for Samsung Exynos (jpeg-hw-exynos4)
- a new dvb frontend for ds2103 chipset (m88ds2103)
- a new sensor driver for Samsung S5K5BAF UXGA (s5k5baf)
- new drivers for R-Car VSP1
- a new radio driver: radio-raremono
- a new tuner driver for ts2022 chipset (m88ts2022)
- the analog part of em28xx is now a separate module that only
load/runs if the device is not a pure digital TV device
- added a staging driver for bcm2048 radio devices
- the omap 2 video driver (omap24xx) was moved to staging. This driver
is for an old hardware and uses a deprecated Kernel internal API. If
nobody cares enough to fix it, it would be removed on a couple Kernel
releases
- the sn9c102 driver was moved to staging. This driver was replaced by
gspca, and disabled on some distros, as almost all devices are known
to work properly with gspca. It should be removed from kernel on a
couple Kernel releases
- lots of driver fixes, improvements and cleanups
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (421 commits)
[media] media: v4l2-dev: fix video device index assignment
[media] rc-core: reuse device numbers
[media] em28xx-cards: properly initialize the device bitmap
[media] Staging: media: Fix line length exceeding 80 characters in as102_drv.c
[media] Staging: media: Fix line length exceeding 80 characters in as102_fe.c
[media] Staging: media: Fix quoted string split across line in as102_fe.c
[media] media: st-rc: Add reset support
[media] m2m-deinterlace: fix allocated struct type
[media] radio-usb-si4713: fix sparse non static symbol warnings
[media] em28xx-audio: remove needless check before usb_free_coherent()
[media] au0828: Fix sparse non static symbol warning
Revert "[media] go7007-usb: only use go->dev after allocated"
[media] em28xx-audio: provide an error code when URB submit fails
[media] em28xx: fix check for audio only usb interfaces when changing the usb alternate setting
[media] em28xx: fix usb alternate setting for analog and digital video endpoints > 0
[media] em28xx: make 'em28xx_ctrl_ops' static
em28xx-alsa: Fix error patch for init/fini
[media] em28xx-audio: flush work at .fini
[media] drxk: remove the option to load firmware asynchronously
[media] em28xx: adjust period size at runtime
...
- ACPI device hotplug fix preventing ACPI drivers from binding to device
objects that acpi_bus_trim() has been called for and the devices
represented by them may not be operational.
- Recent cpufreq changes related to the "boost" (turbo) feature broke
the acpi-cpufreq error code path causing a NULL pointer dereference
to occur on some systems. Fix from Konrad Rzeszutek Wilk.
- The log level of a CPU initialization error message added recently
needs to be reduced, because the particular BIOS issue indicated by
it turns out to be widespread and doesn't really matter for the
majority of systems having it. From Jiang Liu.
- The regulator API needs to be told to stay away from things on systems
with ACPI BIOSes or it may conflict with the BIOS' own handling of
voltage regulators. Fix from Mark Brown that works around a 3.13
regression in lm90 on PCs occuring if the regulator API is enabled.
- Prevent the Exynos4 devfreq driver from being built on multiplatform,
because it depends on things that aren't available during such builds.
From Sachin Kamat.
- Upstream ACPICA doesn't use the bool type as defined in the kernel,
so modify the kernel's ACPICA code to follow the upstream in that
respect (only one variable definition is affected) to reduce
divergences between the two. From Lv Zheng.
- Make the ACPI device PM code use ACPI_COMPANION() instead of its own
routine doing the same thing (and invokng ACPI_COMPANION() in the
process).
- Modify some routines in the ACPI processor driver to follow the
common convention and return negative integers on errors. From
Hanjun Guo.
/
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Merge tag 'pm+acpi-3.14-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes and cleanups from Rafael Wysocki:
- ACPI device hotplug fix preventing ACPI drivers from binding to device
objects that acpi_bus_trim() has been called for and the devices
represented by them may not be operational.
- Recent cpufreq changes related to the "boost" (turbo) feature broke
the acpi-cpufreq error code path causing a NULL pointer dereference
to occur on some systems. Fix from Konrad Rzeszutek Wilk.
- The log level of a CPU initialization error message added recently
needs to be reduced, because the particular BIOS issue indicated by
it turns out to be widespread and doesn't really matter for the
majority of systems having it. From Jiang Liu.
- The regulator API needs to be told to stay away from things on systems
with ACPI BIOSes or it may conflict with the BIOS' own handling of
voltage regulators. Fix from Mark Brown that works around a 3.13
regression in lm90 on PCs occuring if the regulator API is enabled.
- Prevent the Exynos4 devfreq driver from being built on multiplatform,
because it depends on things that aren't available during such builds.
From Sachin Kamat.
- Upstream ACPICA doesn't use the bool type as defined in the kernel,
so modify the kernel's ACPICA code to follow the upstream in that
respect (only one variable definition is affected) to reduce
divergences between the two. From Lv Zheng.
- Make the ACPI device PM code use ACPI_COMPANION() instead of its own
routine doing the same thing (and invokng ACPI_COMPANION() in the
process).
- Modify some routines in the ACPI processor driver to follow the
common convention and return negative integers on errors. From
Hanjun Guo.
* tag 'pm+acpi-3.14-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / scan: Clear match_driver flag in acpi_bus_trim()
ACPI / init: Flag use of ACPI and ACPI idioms for power supplies to regulator API
acpi-cpufreq: De-register CPU notifier and free struct msr on error.
ACPICA: Remove bool usage from ACPICA.
PM / devfreq: Disable Exynos4 driver build on multiplatform
ACPI / PM: Use ACPI_COMPANION() to get ACPI companions of devices
ACPI / scan: reduce log level of "ACPI: \_PR_.CPU4: failed to get CPU APIC ID"
ACPI / processor: Return specific error value when mapping lapic id
The patch 3ddc5b46a8 breaks networking on
alpha (there is a follow-up fix 5cfe8f1ba5,
but networking is still broken even with the second patch).
The patch 3ddc5b46a8 makes
csum_partial_copy_from_user check the pointer with access_ok. However,
csum_partial_copy_from_user is called also from csum_partial_copy_nocheck
and csum_partial_copy_nocheck is called on kernel pointers and it is
supposed not to check pointer validity.
This bug results in ssh session hangs if the system is loaded and bulk
data are printed to ssh terminal.
This patch fixes csum_partial_copy_nocheck to call set_fs(KERNEL_DS), so
that access_ok in csum_partial_copy_from_user accepts kernel-space
addresses.
Cc: stable@vger.kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Pull timer/dynticks updates from Ingo Molnar:
"This tree contains misc dynticks updates: a fix and three cleanups"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/nohz: Fix overflow error in scheduler_tick_max_deferment()
nohz_full: fix code style issue of tick_nohz_full_stop_tick
nohz: Get timekeeping max deferment outside jiffies_lock
tick: Rename tick_check_idle() to tick_irq_enter()
Pull core debug changes from Ingo Molnar:
"This contains mostly kernel debugging related updates:
- make hung_task detection more configurable to distros
- add final bits for x86 UV NMI debugging, with related KGDB changes
- update the mailing-list of MAINTAINERS entries I'm involved with"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
hung_task: Display every hung task warning
sysctl: Add neg_one as a standard constraint
x86/uv/nmi, kgdb/kdb: Fix UV NMI handler when KDB not configured
x86/uv/nmi: Fix Sparse warnings
kgdb/kdb: Fix no KDB config problem
MAINTAINERS: Restore "L: linux-kernel@vger.kernel.org" entries
Commit 384a48d715 "ALSA: hda: HDMI: Support codecs with fewer cvts
than pins" dynamically enabled each pin widget's PIN_OUT only when the
pin was actively in use. This was required on certain NVIDIA CODECs for
correct operation. Specifically, if multiple pin widgets each had their
mux input select the same audio converter widget and each pin widget had
PIN_OUT enabled, then only one of the pin widgets would actually receive
the audio, and often not the one the user wanted!
However, this apparently broke some Intel systems, and commit
6169b67361 "ALSA: hda - Always turn on pins for HDMI/DP" reverted the
dynamic setting of PIN_OUT. This in turn broke the afore-mentioned NVIDIA
CODECs.
This change supports either dynamic or static handling of PIN_OUT,
selected by a flag set up during CODEC initialization. This flag is
enabled for all recent NVIDIA GPUs.
Reported-by: Uosis <uosisl@gmail.com>
Cc: <stable@vger.kernel.org> # v3.13
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
- Xen ARM couldn't use the new FIFO events
- Xen ARM couldn't use the SWIOTLB if compiled as 32-bit with 64-bit PCIe devices.
- Grant table were doing needless M2P operations.
- Ratchet down the self-balloon code so it won't OOM.
- Fix misplaced kfree in Xen PVH error code paths.
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Merge tag 'stable/for-linus-3.14-rc0-late-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull Xen bugfixes from Konrad Rzeszutek Wilk:
"Bug-fixes for the new features that were added during this cycle.
There are also two fixes for long-standing issues for which we have a
solution: grant-table operations extra work that was not needed
causing performance issues and the self balloon code was too
aggressive causing OOMs.
Details:
- Xen ARM couldn't use the new FIFO events
- Xen ARM couldn't use the SWIOTLB if compiled as 32-bit with 64-bit PCIe devices.
- Grant table were doing needless M2P operations.
- Ratchet down the self-balloon code so it won't OOM.
- Fix misplaced kfree in Xen PVH error code paths"
* tag 'stable/for-linus-3.14-rc0-late-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/pvh: Fix misplaced kfree from xlated_setup_gnttab_pages
drivers: xen: deaggressive selfballoon driver
xen/grant-table: Avoid m2p_override during mapping
xen/gnttab: Use phys_addr_t to describe the grant frame base address
xen: swiotlb: handle sizeof(dma_addr_t) != sizeof(phys_addr_t)
arm/xen: Initialize event channels earlier
two s390 guest features that need some handling in the host,
and all the PPC changes. The PPC changes include support for
little-endian guests and enablement for new POWER8 features.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull more KVM updates from Paolo Bonzini:
"Second batch of KVM updates. Some minor x86 fixes, two s390 guest
features that need some handling in the host, and all the PPC changes.
The PPC changes include support for little-endian guests and
enablement for new POWER8 features"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (45 commits)
x86, kvm: correctly access the KVM_CPUID_FEATURES leaf at 0x40000101
x86, kvm: cache the base of the KVM cpuid leaves
kvm: x86: move KVM_CAP_HYPERV_TIME outside #ifdef
KVM: PPC: Book3S PR: Cope with doorbell interrupts
KVM: PPC: Book3S HV: Add software abort codes for transactional memory
KVM: PPC: Book3S HV: Add new state for transactional memory
powerpc/Kconfig: Make TM select VSX and VMX
KVM: PPC: Book3S HV: Basic little-endian guest support
KVM: PPC: Book3S HV: Add support for DABRX register on POWER7
KVM: PPC: Book3S HV: Prepare for host using hypervisor doorbells
KVM: PPC: Book3S HV: Handle new LPCR bits on POWER8
KVM: PPC: Book3S HV: Handle guest using doorbells for IPIs
KVM: PPC: Book3S HV: Consolidate code that checks reason for wake from nap
KVM: PPC: Book3S HV: Implement architecture compatibility modes for POWER8
KVM: PPC: Book3S HV: Add handler for HV facility unavailable
KVM: PPC: Book3S HV: Flush the correct number of TLB sets on POWER8
KVM: PPC: Book3S HV: Context-switch new POWER8 SPRs
KVM: PPC: Book3S HV: Align physical and virtual CPU thread numbers
KVM: PPC: Book3S HV: Don't set DABR on POWER8
kvm/ppc: IRQ disabling cleanup
...
MF Symlinks are regular files containing content in a specified format.
The function couldbe_mf_symlink() checks the mode for a set S_IFREG bit
as a test to confirm that it is a regular file. This bit is also set for
other filetypes and simply checking for this bit being set may return
false positives.
We ensure that we are actually checking for a regular file by using the
S_ISREG macro to test instead.
Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Reported-by: Neil Brown <neilb@suse.de>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Passing a freed 'pages' to free_xenballooned_pages will end badly
on kernels with slub debug enabled.
This looks out of place between the rc assign and the check, but
we do want to kfree pages regardless of which path we take.
Signed-off-by: Dave Jones <davej@fedoraproject.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Current xen-selfballoon driver is too aggressive which may cause OOM be
triggered more often. Eg. this bug reported by James:
https://lkml.org/lkml/2013/11/21/158
There are two mainly reasons:
1) The original goal_page didn't consider some pages used by kernel space, like
slab pages and pages used by device drivers.
2) The balloon driver may not give back memory to guest OS fast enough when the
workload suddenly aquries a lot of physical memory.
In both cases, the guest OS will suffer from memory pressure and OOM may
be triggered.
The fix is make xen-selfballoon driver not that aggressive by adding extra 10%
of total ram pages to goal_page.
It's more valuable to keep the guest system reliable and response faster than
balloon out these 10% pages to XEN.
Signed-off-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
The grant mapping API does m2p_override unnecessarily: only gntdev needs it,
for blkback and future netback patches it just cause a lock contention, as
those pages never go to userspace. Therefore this series does the following:
- the original functions were renamed to __gnttab_[un]map_refs, with a new
parameter m2p_override
- based on m2p_override either they follow the original behaviour, or just set
the private flag and call set_phys_to_machine
- gnttab_[un]map_refs are now a wrapper to call __gnttab_[un]map_refs with
m2p_override false
- a new function gnttab_[un]map_refs_userspace provides the old behaviour
It also removes a stray space from page.h and change ret to 0 if
XENFEAT_auto_translated_physmap, as that is the only possible return value
there.
v2:
- move the storing of the old mfn in page->index to gnttab_map_refs
- move the function header update to a separate patch
v3:
- a new approach to retain old behaviour where it needed
- squash the patches into one
v4:
- move out the common bits from m2p* functions, and pass pfn/mfn as parameter
- clear page->private before doing anything with the page, so m2p_find_override
won't race with this
v5:
- change return value handling in __gnttab_[un]map_refs
- remove a stray space in page.h
- add detail why ret = 0 now at some places
v6:
- don't pass pfn to m2p* functions, just get it locally
Signed-off-by: Zoltan Kiss <zoltan.kiss@citrix.com>
Suggested-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Avoid returning incorrect acl mask attributes when the server doesn't
support ACLs.
Signed-off-by: Malahal Naineni <malahal@us.ibm.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This patch fixed following errors while make htmldocs
Warning(/mm/slab.c:1956): No description found for parameter 'page'
Warning(/mm/slab.c:1956): Excess function parameter 'slabp' description in 'slab_destroy'
Incorrect function parameter "slabp" was set instead of "page"
Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
The slub code does some setup during early boot in
early_kmem_cache_node_alloc() with some local data. There is no
possible way that another CPU can see this data, so the slub code
doesn't unnecessarily lock it. However, some new lockdep asserts
check to make sure that add_partial() _always_ has the list_lock
held.
Just add the locking, even though it is technically unnecessary.
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
On x86, SLUB creates and handles <=8192-byte allocations internally.
It passes larger ones up to the allocator. Saying "up to order 2" is,
at best, ambiguous. Is that order-1? Or (order-2 bytes)? Make
it more clear.
SLOB commits a similar sin. It *handles* page-size requests, but the
comment says that it passes up "all page size and larger requests".
SLOB also swaps around the order of the very-similarly-named
KMALLOC_SHIFT_HIGH and KMALLOC_SHIFT_MAX #defines. Make it
consistent with the order of the other two allocators.
Cc: Matt Mackall <mpm@selenic.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Christoph Lameter <cl@linux-foundation.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
We have the following means for encoding writable or dirty ptes:
PTE_DIRTY PTE_RDONLY
!pte_dirty && !pte_write 0 1
!pte_dirty && pte_write 0 1
pte_dirty && !pte_write 1 1
pte_dirty && pte_write 1 0
So we can't distinguish between writable clean ptes and read only
ptes. This can cause problems with ptes being incorrectly flagged as
read only when they are writable but not dirty.
This patch introduces a new software bit PTE_WRITE which allows us to
correctly identify writable ptes. PTE_RDONLY is now only clear for
valid ptes where a page is both writable and dirty.
Signed-off-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Expand out the pte manipulation functions. This makes our life easier
when using things like tags and cscope.
Signed-off-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Pull btrfs updates from Chris Mason:
"This is a pretty big pull, and most of these changes have been
floating in btrfs-next for a long time. Filipe's properties work is a
cool building block for inheriting attributes like compression down on
a per inode basis.
Jeff Mahoney kicked in code to export filesystem info into sysfs.
Otherwise, lots of performance improvements, cleanups and bug fixes.
Looks like there are still a few other small pending incrementals, but
I wanted to get the bulk of this in first"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (149 commits)
Btrfs: fix spin_unlock in check_ref_cleanup
Btrfs: setup inode location during btrfs_init_inode_locked
Btrfs: don't use ram_bytes for uncompressed inline items
Btrfs: fix btrfs_search_slot_for_read backwards iteration
Btrfs: do not export ulist functions
Btrfs: rework ulist with list+rb_tree
Btrfs: fix memory leaks on walking backrefs failure
Btrfs: fix send file hole detection leading to data corruption
Btrfs: add a reschedule point in btrfs_find_all_roots()
Btrfs: make send's file extent item search more efficient
Btrfs: fix to catch all errors when resolving indirect ref
Btrfs: fix protection between walking backrefs and root deletion
btrfs: fix warning while merging two adjacent extents
Btrfs: fix infinite path build loops in incremental send
btrfs: undo sysfs when open_ctree() fails
Btrfs: fix snprintf usage by send's gen_unique_name
btrfs: fix defrag 32-bit integer overflow
btrfs: sysfs: list the NO_HOLES feature
btrfs: sysfs: don't show reserved incompat feature
btrfs: call permission checks earlier in ioctls and return EPERM
...
possible, because the eraseblock may be in an "unstable" state and write
operation sometimes causes NOR chip lock-ups.
* Both UBI and UBIFS changes are now maintainer in one single tree, because the
amount of changes dropped significantly.
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Merge tag 'upstream-3.14-rc1' of git://git.infradead.org/linux-ubifs
Pull ubifs updates from Artem Bityutskiy:
- Improve the NOR erasure quirk - now it tries to do as little writes
as possible, because the eraseblock may be in an "unstable" state and
write operation sometimes causes NOR chip lock-ups.
- Both UBI and UBIFS changes are now maintainer in one single tree,
because the amount of changes dropped significantly.
* tag 'upstream-3.14-rc1' of git://git.infradead.org/linux-ubifs:
UBI: avoid program operation on NOR flash after erasure interrupted
MAINTAINERS: keep UBI and UBIFS stuff in the same tree
UBI: fix error return code
Pull some further ceph acl cleanups from Sage Weil:
"I do have a couple patches on top of what's in your tree, though, that
clean up a couple duplicated lines in your fix and apply Christoph's
cleanup"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
ceph: simplify ceph_{get,init}_acl
ceph: remove duplicate declaration of ceph_setattr
- ->get_acl only gets called after we checked for a cached ACL, so no
need to call get_cached_acl again.
- no need to check IS_POSIXACL in ->get_acl, without that it should
never get set as all the callers that set it already have the check.
- you should be able to use the full posix_acl_create in CEPH
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Sage Weil <sage@inktank.com>
Merge misc fixes from Andrew Morton:
"A few hotfixes and various leftovers which were awaiting other merges.
Mainly movement of zram into mm/"
* emailed patches fron Andrew Morton <akpm@linux-foundation.org>: (25 commits)
memcg: fix mutex not unlocked on memcg_create_kmem_cache fail path
Documentation/filesystems/vfs.txt: update file_operations documentation
mm, oom: base root bonus on current usage
mm: don't lose the SOFT_DIRTY flag on mprotect
mm/slub.c: fix page->_count corruption (again)
mm/mempolicy.c: fix mempolicy printing in numa_maps
zram: remove zram->lock in read path and change it with mutex
zram: remove workqueue for freeing removed pending slot
zram: introduce zram->tb_lock
zram: use atomic operation for stat
zram: remove unnecessary free
zram: delay pending free request in read path
zram: fix race between reset and flushing pending work
zsmalloc: add maintainers
zram: add zram maintainers
zsmalloc: add copyright
zram: add copyright
zram: remove old private project comment
zram: promote zram from staging
zsmalloc: move it under mm
...
The x32 case for the recvmsg() timout handling is broken:
asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
unsigned int vlen, unsigned int flags,
struct compat_timespec __user *timeout)
{
int datagrams;
struct timespec ktspec;
if (flags & MSG_CMSG_COMPAT)
return -EINVAL;
if (COMPAT_USE_64BIT_TIME)
return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
flags | MSG_CMSG_COMPAT,
(struct timespec *) timeout);
...
The timeout pointer parameter is provided by userland (hence the __user
annotation) but for x32 syscalls it's simply cast to a kernel pointer
and is passed to __sys_recvmmsg which will eventually directly
dereference it for both reading and writing. Other callers to
__sys_recvmmsg properly copy from userland to the kernel first.
The bug was introduced by commit ee4fa23c4b ("compat: Use
COMPAT_USE_64BIT_TIME in net/compat.c") and should affect all kernels
since 3.4 (and perhaps vendor kernels if they backported x32 support
along with this code).
Note that CONFIG_X86_X32_ABI gets enabled at build time and only if
CONFIG_X86_X32 is enabled and ld can build x32 executables.
Other uses of COMPAT_USE_64BIT_TIME seem fine.
This addresses CVE-2014-0038.
Signed-off-by: PaX Team <pageexec@freemail.hu>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@vger.kernel.org> # v3.4+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull x86 asmlinkage (LTO) changes from Peter Anvin:
"This patchset adds more infrastructure for link time optimization
(LTO).
This patchset was pulled into my tree late because of a
miscommunication (part of the patchset was picked up by other
maintainers). However, the patchset is strictly build-related and
seems to be okay in testing"
* 'x86-asmlinkage-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, asmlinkage, xen: Fix type of NMI
x86, asmlinkage, xen, kvm: Make {xen,kvm}_lock_spinning global and visible
x86: Use inline assembler instead of global register variable to get sp
x86, asmlinkage, paravirt: Make paravirt thunks global
x86, asmlinkage, paravirt: Don't rely on local assembler labels
x86, asmlinkage, lguest: Fix C functions used by inline assembler
Pull x86 build bits from Peter Anvin:
"Various build-related minor bits.
Most of this is work by David Woodhouse to be able to compile the
early boot code with clang/llvm; we have also managed to push an
actual -m16 option into gcc 4.9 so this makes us use that option if
available instead of hacking it.
The balance is a patch from Michael Davidson to the relocs program to
help manual debugging.
None of these should change the actual compiled binary with currently
released compilers"
* 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, build: Build 16-bit code with -m16 where possible
x86, boot: Fix word-size assumptions in has_eflag() inline asm
x86, boot: Use __attribute__((used)) to ensure videocard structs are emitted
x86: Remove duplication of 16-bit CFLAGS
x86, relocs: Add manual debug mode
These are changes that arrived a little late but were considered
self-contained enough to still go in for v3.14.
They are all device tree updtes this time around, and mainly for
Broadcom SoCs.
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Merge tag 'late-dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC late changes from Kevin Hilman:
"These are changes that arrived a little late but were considered
self-contained enough to still go in for v3.14.
They are all device tree updtes this time around, and mainly for
Broadcom SoCs"
* tag 'late-dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: moxart: move fixed rate clock child node to board level dts
clk: bcm281xx: define kona clock binding
ARM: dts: add usb udc support to bcm281xx
ARM: dts: Specify clocks for timer on bcm11351
Documentation: dt: kona-timer: Add clocks property
ARM: dts: Specify clocks for SDHCIs on bcm11351
Documentation: dt: kona-sdhci: Add clocks property
ARM: dts: Specify clocks for UARTs on bcm11351
ARM: dts: bcm281xx: Add i2c busses
ARM: dts: Declare clocks as fixed on bcm11351
ARM: dts: bcm28155-ap: Enable all the i2c busses
Pull MIPS updates from Ralf Baechle:
"The most notable new addition inside this pull request is the support
for MIPS's latest and greatest core called "inter/proAptiv". The
patch series describes this core as follows.
"The interAptiv is a power-efficient multi-core microprocessor
for use in system-on-chip (SoC) applications. The interAptiv combines
a multi-threading pipeline with a coherence manager to deliver improved
computational throughput and power efficiency. The interAptiv can
contain one to four MIPS32R3 interAptiv cores, system level
coherence manager with L2 cache, optional coherent I/O port,
and optional floating point unit."
The platform specific patches touch all 3 Broadcom families. It adds
support for the new Broadcom/Netlogix XLP9xx Soc, building a common
BCM63XX SMP kernel for all BCM63XX SoCs regardless of core type/count
and full gpio button/led descriptions for BCM47xx.
The rest of the series are cleanups and bug fixes that are MIPS
generic and consist largely of changes that Imgtec/MIPS had published
in their linux-mti-3.10.git stable tree. Random other cleanups and
patches preparing code to be merged in 3.15"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (139 commits)
mips: select ARCH_MIGHT_HAVE_PC_SERIO
mips: delete non-required instances of include <linux/init.h>
MIPS: KVM: remove shadow_tlb code
MIPS: KVM: use common EHINV aware UNIQUE_ENTRYHI
mips/ide: flush dcache also if icache does not snoop dcache
MIPS: BCM47XX: fix position of cpu_wait disabling
MIPS: BCM63XX: select correct MIPS_L1_CACHE_SHIFT value
MIPS: update MIPS_L1_CACHE_SHIFT based on MIPS_L1_CACHE_SHIFT_<N>
MIPS: introduce MIPS_L1_CACHE_SHIFT_<N>
MIPS: ZBOOT: gather string functions into string.c
arch/mips/pci: don't check resource with devm_ioremap_resource
arch/mips/lantiq/xway: don't check resource with devm_ioremap_resource
bcma: gpio: don't cast u32 to unsigned long
ssb: gpio: add own IRQ domain
MIPS: BCM47XX: fix sparse warnings in board.c
MIPS: BCM47XX: add board detection for Linksys WRT54GS V1
MIPS: BCM47XX: fix detection for some boards
MIPS: BCM47XX: Enable buttons support on SSB
MIPS: BCM47XX: Convert WNDR4500 to new syntax
MIPS: BCM47XX: Use "timer" trigger for status LEDs
...
Olof Johansson