mirror of https://gitee.com/openkylin/linux.git
1230 Commits
| Author | SHA1 | Message | Date |
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Linus Torvalds
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eb254f323b |
Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cache allocation interface from Thomas Gleixner:
"This provides support for Intel's Cache Allocation Technology, a cache
partitioning mechanism.
The interface is odd, but the hardware interface of that CAT stuff is
odd as well.
We tried hard to come up with an abstraction, but that only allows
rather simple partitioning, but no way of sharing and dealing with the
per package nature of this mechanism.
In the end we decided to expose the allocation bitmaps directly so all
combinations of the hardware can be utilized.
There are two ways of associating a cache partition:
- Task
A task can be added to a resource group. It uses the cache
partition associated to the group.
- CPU
All tasks which are not member of a resource group use the group to
which the CPU they are running on is associated with.
That allows for simple CPU based partitioning schemes.
The main expected user sare:
- Virtualization so a VM can only trash only the associated part of
the cash w/o disturbing others
- Real-Time systems to seperate RT and general workloads.
- Latency sensitive enterprise workloads
- In theory this also can be used to protect against cache side
channel attacks"
[ Intel RDT is "Resource Director Technology". The interface really is
rather odd and very specific, which delayed this pull request while I
was thinking about it. The pull request itself came in early during
the merge window, I just delayed it until things had calmed down and I
had more time.
But people tell me they'll use this, and the good news is that it is
_so_ specific that it's rather independent of anything else, and no
user is going to depend on the interface since it's pretty rare. So if
push comes to shove, we can just remove the interface and nothing will
break ]
* 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
x86/intel_rdt: Implement show_options() for resctrlfs
x86/intel_rdt: Call intel_rdt_sched_in() with preemption disabled
x86/intel_rdt: Update task closid immediately on CPU in rmdir and unmount
x86/intel_rdt: Fix setting of closid when adding CPUs to a group
x86/intel_rdt: Update percpu closid immeditately on CPUs affected by changee
x86/intel_rdt: Reset per cpu closids on unmount
x86/intel_rdt: Select KERNFS when enabling INTEL_RDT_A
x86/intel_rdt: Prevent deadlock against hotplug lock
x86/intel_rdt: Protect info directory from removal
x86/intel_rdt: Add info files to Documentation
x86/intel_rdt: Export the minimum number of set mask bits in sysfs
x86/intel_rdt: Propagate error in rdt_mount() properly
x86/intel_rdt: Add a missing #include
MAINTAINERS: Add maintainer for Intel RDT resource allocation
x86/intel_rdt: Add scheduler hook
x86/intel_rdt: Add schemata file
x86/intel_rdt: Add tasks files
x86/intel_rdt: Add cpus file
x86/intel_rdt: Add mkdir to resctrl file system
x86/intel_rdt: Add "info" files to resctrl file system
...
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Linus Torvalds
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8421c60446 |
platform-drivers-x86 for 4.10-2
Move and add registration for the mlx-platform driver. Introduce button and lid drivers for the surface3 (different from the surface3-pro). Add BXT PMIC TMU support. Add Y700 to existing ideapad-laptop quirk. ideapad-laptop: - Add Y700 15-ACZ to no_hw_rfkill DMI list surface3_button: - Introduce button support for the Surface 3 surface3-wmi: - Add custom surface3 platform device for controlling LID - Balance locking on error path mlx-platform: - Add mlxcpld-hotplug driver registration - Fix semicolon.cocci warnings - Move module from arch/x86 platform/x86: - Add Whiskey Cove PMIC TMU support -----BEGIN PGP SIGNATURE----- iQEcBAABAgAGBQJYVxXxAAoJEKbMaAwKp364mDAIAL750zoO/liY1qfFGktkY2zS xknJqh4UeIVW6iN9hEq7jQD3jkFl7hNuXgFyogLZgJQge8gfufsOD7ljkhp2wVF2 3Ir437f4GdcUeuhO6PwuPZnn++Y6oH2rLZc1d+5anZRikW470tnXitrXs5hsqG57 74KiSFa+v+Uj1kqU4Gjt0QDSfmQc185Wn5xieHPpZrcjDaut+N4t06+MDMcH7fjk 6nJ+tvo/dreZojA+AklljaNB2BioIGbEOGamnxOJ9Rjs0jV2d0A1c/6XBHDe+Xtu SkWqvjdrLOSxAjErBpB97VYnYihjCDXfl+DIABOdumGO6hJz01DvbZ+VVLwGM0E= =YH31 -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v4.10-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86 Pull more x86 platform driver updates from Darren Hart: "Move and add registration for the mlx-platform driver. Introduce button and lid drivers for the surface3 (different from the surface3-pro). Add BXT PMIC TMU support. Add Y700 to existing ideapad-laptop quirk. Summary: ideapad-laptop: - Add Y700 15-ACZ to no_hw_rfkill DMI list surface3_button: - Introduce button support for the Surface 3 surface3-wmi: - Add custom surface3 platform device for controlling LID - Balance locking on error path mlx-platform: - Add mlxcpld-hotplug driver registration - Fix semicolon.cocci warnings - Move module from arch/x86 platform/x86: - Add Whiskey Cove PMIC TMU support" * tag 'platform-drivers-x86-v4.10-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86: platform/x86: surface3-wmi: Balance locking on error path platform/x86: Add Whiskey Cove PMIC TMU support platform/x86: ideapad-laptop: Add Y700 15-ACZ to no_hw_rfkill DMI list platform/x86: Introduce button support for the Surface 3 platform/x86: Add custom surface3 platform device for controlling LID platform/x86: mlx-platform: Add mlxcpld-hotplug driver registration platform/x86: mlx-platform: Fix semicolon.cocci warnings platform/x86: mlx-platform: Move module from arch/x86 |
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Vadim Pasternak
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6613d18e90 |
platform/x86: mlx-platform: Move module from arch/x86
Since mlx-platform is not an architectural driver, it is moved out of arch/x86/platform to drivers/platform/x86. Relevant Makefile and Kconfig are updated. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
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Linus Torvalds
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e7aa8c2eb1 |
These are the documentation changes for 4.10.
It's another busy cycle for the docs tree, as the sphinx conversion
continues. Highlights include:
- Further work on PDF output, which remains a bit of a pain but should be
more solid now.
- Five more DocBook template files converted to Sphinx. Only 27 to go...
Lots of plain-text files have also been converted and integrated.
- Images in binary formats have been replaced with more source-friendly
versions.
- Various bits of organizational work, including the renaming of various
files discussed at the kernel summit.
- New documentation for the device_link mechanism.
...and, of course, lots of typo fixes and small updates.
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Merge tag 'docs-4.10' of git://git.lwn.net/linux
Pull documentation update from Jonathan Corbet:
"These are the documentation changes for 4.10.
It's another busy cycle for the docs tree, as the sphinx conversion
continues. Highlights include:
- Further work on PDF output, which remains a bit of a pain but
should be more solid now.
- Five more DocBook template files converted to Sphinx. Only 27 to
go... Lots of plain-text files have also been converted and
integrated.
- Images in binary formats have been replaced with more
source-friendly versions.
- Various bits of organizational work, including the renaming of
various files discussed at the kernel summit.
- New documentation for the device_link mechanism.
... and, of course, lots of typo fixes and small updates"
* tag 'docs-4.10' of git://git.lwn.net/linux: (193 commits)
dma-buf: Extract dma-buf.rst
Update Documentation/00-INDEX
docs: 00-INDEX: document directories/files with no docs
docs: 00-INDEX: remove non-existing entries
docs: 00-INDEX: add missing entries for documentation files/dirs
docs: 00-INDEX: consolidate process/ and admin-guide/ description
scripts: add a script to check if Documentation/00-INDEX is sane
Docs: change sh -> awk in REPORTING-BUGS
Documentation/core-api/device_link: Add initial documentation
core-api: remove an unexpected unident
ppc/idle: Add documentation for powersave=off
Doc: Correct typo, "Introdution" => "Introduction"
Documentation/atomic_ops.txt: convert to ReST markup
Documentation/local_ops.txt: convert to ReST markup
Documentation/assoc_array.txt: convert to ReST markup
docs-rst: parse-headers.pl: cleanup the documentation
docs-rst: fix media cleandocs target
docs-rst: media/Makefile: reorganize the rules
docs-rst: media: build SVG from graphviz files
docs-rst: replace bayer.png by a SVG image
...
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Linus Torvalds
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5fc0363d43 |
Merge branch 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build updates from Ingo Molnar:
"The main changes in this cycle were:
- Makefile improvements (Paul Bolle)
- KConfig cleanups to better separate 32-bit only, 64-bit only and
generic feature enablement sections (Ingo Molnar)"
* 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/build: Remove three unneeded genhdr-y entries
x86/build: Don't use $(LINUXINCLUDE) twice
x86/kconfig: Sort the 'config X86' selects alphabetically
x86/kconfig: Clean up 32-bit compat options
x86/kconfig: Clean up IA32_EMULATION select
x86/kconfig, x86/pkeys: Move pkeys selects to X86_INTEL_MEMORY_PROTECTION_KEYS
x86/kconfig: Move 64-bit only arch Kconfig selects to 'config X86_64'
x86/kconfig: Move 32-bit only arch Kconfig selects to 'config X86_32'
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Linus Torvalds
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df5f0f0a02 |
Merge branch 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 RAS updates from Ingo Molnar:
"The main changes in this development cycle were:
- more AMD northbridge support work, mostly in preparation for Fam17h
CPUs (Yazen Ghannam, Borislav Petkov)
- cleanups/refactorings and fixes (Borislav Petkov, Tony Luck,
Yinghai Lu)"
* 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Include the PPIN in MCE records when available
x86/mce/AMD: Add system physical address translation for AMD Fam17h
x86/amd_nb: Add SMN and Indirect Data Fabric access for AMD Fam17h
x86/amd_nb: Add Fam17h Data Fabric as "Northbridge"
x86/amd_nb: Make all exports EXPORT_SYMBOL_GPL
x86/amd_nb: Make amd_northbridges internal to amd_nb.c
x86/mce/AMD: Reset Threshold Limit after logging error
x86/mce/AMD: Fix HWID_MCATYPE calculation by grouping arguments
x86/MCE: Correct TSC timestamping of error records
x86/RAS: Hide SMCA bank names
x86/RAS: Rename smca_bank_names to smca_names
x86/RAS: Simplify SMCA HWID descriptor struct
x86/RAS: Simplify SMCA bank descriptor struct
x86/MCE: Dump MCE to dmesg if no consumers
x86/RAS: Add TSC timestamp to the injected MCE
x86/MCE: Do not look at panic_on_oops in the severity grading
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Ingo Molnar
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0a21fc1214 |
sched/x86: Make CONFIG_SCHED_MC_PRIO=y easier to enable
Right now CONFIG_SCHED_MC_PRIO has X86_INTEL_PSTATE as a dependency, which is not enabled by default and which hides the CONFIG_SCHED_MC_PRIO hardware-enabling feature. Select X86_INTEL_PSTATE instead, plus its dependency (CPU_FREQ), if the user enables CONFIG_SCHED_MC_PRIO=y. (Also align the CONFIG_SCHED_MC_PRIO Kconfig help text in standard style.) Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: bp@suse.de Cc: jolsa@redhat.com Cc: linux-acpi@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: rjw@rjwysocki.net Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Tim Chen
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de966cf4a4 |
sched/x86: Change CONFIG_SCHED_ITMT to CONFIG_SCHED_MC_PRIO
Rename CONFIG_SCHED_ITMT for Intel Turbo Boost Max Technology 3.0 to CONFIG_SCHED_MC_PRIO. This makes the configuration extensible in future to other architectures that wish to similarly establish CPU core priorities support in the scheduler. The description in Kconfig is updated to reflect this change with added details for better clarity. The configuration is explicitly default-y, to enable the feature on CPUs that have this feature. It has no effect on non-TBM3 CPUs. Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: bp@suse.de Cc: jolsa@redhat.com Cc: linux-acpi@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: rjw@rjwysocki.net Link: http://lkml.kernel.org/r/2b2ee29d93e3f162922d72d0165a1405864fbb23.1480444902.git.tim.c.chen@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Tim Chen
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5e76b2ab36 |
x86: Enable Intel Turbo Boost Max Technology 3.0
On platforms supporting Intel Turbo Boost Max Technology 3.0, the maximum turbo frequencies of some cores in a CPU package may be higher than for the other cores in the same package. In that case, better performance (and possibly lower energy consumption as well) can be achieved by making the scheduler prefer to run tasks on the CPUs with higher max turbo frequencies. To that end, set up a core priority metric to abstract the core preferences based on the maximum turbo frequency. In that metric, the cores with higher maximum turbo frequencies are higher-priority than the other cores in the same package and that causes the scheduler to favor them when making load-balancing decisions using the asymmertic packing approach. At the same time, the priority of SMT threads with a higher CPU number is reduced so as to avoid scheduling tasks on all of the threads that belong to a favored core before all of the other cores have been given a task to run. The priority metric will be initialized by the P-state driver with the help of the sched_set_itmt_core_prio() function. The P-state driver will also determine whether or not ITMT is supported by the platform and will call sched_set_itmt_support() to indicate that. Co-developed-by: Peter Zijlstra (Intel) <peterz@infradead.org> Co-developed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Cc: linux-pm@vger.kernel.org Cc: peterz@infradead.org Cc: jolsa@redhat.com Cc: rjw@rjwysocki.net Cc: linux-acpi@vger.kernel.org Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: bp@suse.de Link: http://lkml.kernel.org/r/cd401ccdff88f88c8349314febdc25d51f7c48f7.1479844244.git.tim.c.chen@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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Yazen Ghannam
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f5382de9d4 |
x86/mce/AMD: Add system physical address translation for AMD Fam17h
The Unified Memory Controllers (UMCs) on Fam17h log a normalized address
in their MCA_ADDR registers. We need to convert that normalized address
to a system physical address in order to support a few facilities:
1) To offline poisoned pages in DRAM proactively in the deferred error
handler.
2) To print sysaddr and page info for DRAM ECC errors in EDAC.
[ Boris: fixes/cleanups ontop:
* hi_addr_offset = 0 - no need for that branch. Stick it all under the
HiAddrOffsetEn case. It confines hi_addr_offset's declaration too.
* Move variables to the innermost scope they're used at so that we save
on stack and not blow it up immediately on function entry.
* Do not modify *sys_addr prematurely - we want to not exit early and
have modified *sys_addr some, which callers get to see. We either
convert to a sys_addr or we don't do anything. And we signal that with
the retval of the function.
* Rename label out -> out_err - because it is the error path.
* No need to pr_err of the conversion failed case: imagine a
sparsely-populated machine with UMCs which don't have DIMMs. Callers
should look at the retval instead and issue a printk only when really
necessary. No need for useless info in dmesg.
* s/temp_reg/tmp/ and other variable names shortening => shorter code.
* Use BIT() everywhere.
* Make error messages more informative.
* Small build fix for the !CONFIG_X86_MCE_AMD case.
* ... and more minor cleanups.
]
Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Aravind Gopalakrishnan <aravindksg.lkml@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/20161122111133.mjzpvzhf7o7yl2oa@pd.tnic
[ Typo fixes. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Thomas Gleixner
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59fe5a77d4 |
x86/intel_rdt: Select KERNFS when enabling INTEL_RDT_A
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c: In function 'rdtgroup_kn_lock_live': arch/x86/kernel/cpu/intel_rdt_rdtgroup.c:658:2: error: implicit declaration of function 'kernfs_break_active_protection' [-Werror=implicit-function-declaration] Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Shaohua Li <shli@fb.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Tony Luck <tony.luck@intel.com> |
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Ingo Molnar
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c763ea2650 |
x86/kconfig: Sort the 'config X86' selects alphabetically
This organizes the list a bit, plus reduces future conflicts (if people remember to insert new options alphabetically that is). Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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953fee1d82 |
x86/kconfig: Clean up 32-bit compat options
Introduce a 'COMPAT_32' helper config value for 'X86_32 || IA32_EMULATION' and use it. Also move some selects to this new option, to remove more selects from the generic X86 section. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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39f88911b9 |
x86/kconfig: Clean up IA32_EMULATION select
Move a 'if IA32_EMULATION' select from the generic X86 section to the IA32_EMULATION option. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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52c8e6017c |
x86/kconfig, x86/pkeys: Move pkeys selects to X86_INTEL_MEMORY_PROTECTION_KEYS
Move the pkeys selects from the generic x86 config section to the X86_INTEL_MEMORY_PROTECTION_KEYS section. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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d94e068573 |
x86/kconfig: Move 64-bit only arch Kconfig selects to 'config X86_64'
These are easier to read when they come next to the X86_64 config. Note that all remaining 'if X86_64' config options in the generic section are in principle suitable for activation on 32-bit, but have not been ported yet. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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341c787e34 |
x86/kconfig: Move 32-bit only arch Kconfig selects to 'config X86_32'
These are easier to read when they come next to the X86_32 config. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Fenghua Yu
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78e99b4a2b |
x86/intel_rdt: Add CONFIG, Makefile, and basic initialization
Introduce CONFIG_INTEL_RDT_A (default: no, dependent on CPU_SUP_INTEL) to control inclusion of Resource Director Technology in the build. Simple init() routine just checks which features are present. If they are pr_info() one line summary for each feature for now. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Cc: "Ravi V Shankar" <ravi.v.shankar@intel.com> Cc: "Tony Luck" <tony.luck@intel.com> Cc: "David Carrillo-Cisneros" <davidcc@google.com> Cc: "Sai Prakhya" <sai.praneeth.prakhya@intel.com> Cc: "Peter Zijlstra" <peterz@infradead.org> Cc: "Stephane Eranian" <eranian@google.com> Cc: "Dave Hansen" <dave.hansen@intel.com> Cc: "Shaohua Li" <shli@fb.com> Cc: "Nilay Vaish" <nilayvaish@gmail.com> Cc: "Vikas Shivappa" <vikas.shivappa@linux.intel.com> Cc: "Ingo Molnar" <mingo@elte.hu> Cc: "Borislav Petkov" <bp@suse.de> Cc: "H. Peter Anvin" <h.peter.anvin@intel.com> Link: http://lkml.kernel.org/r/1477142405-32078-7-git-send-email-fenghua.yu@intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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Mauro Carvalho Chehab
|
8c27ceff36 |
docs: fix locations of several documents that got moved
The previous patch renamed several files that are cross-referenced along the Kernel documentation. Adjust the links to point to the right places. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> |
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Vineet Gupta
|
51a021244b |
atomic64: no need for CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
This came to light when implementing native 64-bit atomics for ARCv2. The atomic64 self-test code uses CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE to check whether atomic64_dec_if_positive() is available. It seems it was needed when not every arch defined it. However as of current code the Kconfig option seems needless - for CONFIG_GENERIC_ATOMIC64 it is auto-enabled in lib/Kconfig and a generic definition of API is present lib/atomic64.c - arches with native 64-bit atomics select it in arch/*/Kconfig and define the API in their headers So I see no point in keeping the Kconfig option Compile tested for: - blackfin (CONFIG_GENERIC_ATOMIC64) - x86 (!CONFIG_GENERIC_ATOMIC64) - ia64 Link: http://lkml.kernel.org/r/1473703083-8625-3-git-send-email-vgupta@synopsys.com Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Zhaoxiu Zeng <zhaoxiu.zeng@gmail.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Ming Lin <ming.l@ssi.samsung.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Borislav Petkov <bp@suse.de> Cc: Andi Kleen <ak@linux.intel.com> Cc: Boqun Feng <boqun.feng@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Yisheng Xie
|
461a718432 |
mm/hugetlb: introduce ARCH_HAS_GIGANTIC_PAGE
Avoid making ifdef get pretty unwieldy if many ARCHs support gigantic page. No functional change with this patch. Link: http://lkml.kernel.org/r/1475227569-63446-2-git-send-email-xieyisheng1@huawei.com Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com> Suggested-by: Michal Hocko <mhocko@suse.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Hanjun Guo <guohanjun@huawei.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
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e6e3d8f8f4 |
PCI changes for the v4.9 merge window:
Enumeration
microblaze: Add multidomain support for procfs (Bharat Kumar Gogada)
Resource management
Ignore requested alignment for PROBE_ONLY and fixed resources (Yongji Xie)
Ignore requested alignment for VF BARs (Yongji Xie)
PCI device hotplug
Make core explicitly non-modular (Paul Gortmaker)
PCIe native device hotplug
Rename pcie_isr() locals for clarity (Bjorn Helgaas)
Return IRQ_NONE when we can't read interrupt status (Bjorn Helgaas)
Remove unnecessary guard (Bjorn Helgaas)
Clean up dmesg "Slot(%s)" messages (Bjorn Helgaas)
Remove useless pciehp_get_latch_status() calls (Bjorn Helgaas)
Clear attention LED on device add (Keith Busch)
Allow exclusive userspace control of indicators (Keith Busch)
Process all hotplug events before looking for new ones (Mayurkumar Patel)
Don't re-read Slot Status when queuing hotplug event (Mayurkumar Patel)
Don't re-read Slot Status when handling surprise event (Mayurkumar Patel)
Make explicitly non-modular (Paul Gortmaker)
Power management
Afford direct-complete to devices with non-standard PM (Lukas Wunner)
Query platform firmware for device power state (Lukas Wunner)
Recognize D3cold in pci_update_current_state() (Lukas Wunner)
Avoid unnecessary resume after direct-complete (Lukas Wunner)
Make explicitly non-modular (Paul Gortmaker)
Virtualization
Mark Atheros AR9580 to avoid bus reset (Maik Broemme)
Check for pci_setup_device() failure in pci_iov_add_virtfn() (Po Liu)
MSI
Enable PCI_MSI_IRQ_DOMAIN support for ARC (Joao Pinto)
AER
Remove aerdriver.nosourceid kernel parameter (Bjorn Helgaas)
Remove aerdriver.forceload kernel parameter (Bjorn Helgaas)
Fix aer_probe() kernel-doc comment (Cao jin)
Add bus flag to skip source ID matching (Jon Derrick)
Avoid memory allocation in interrupt handling path (Jon Derrick)
Cache capability position (Keith Busch)
Make explicitly non-modular (Paul Gortmaker)
Remove duplicate AER severity translation (Tyler Baicar)
Send correct severity to calculate AER severity (Tyler Baicar)
Precision Time Measurement
Add Precision Time Measurement (PTM) support (Jonathan Yong)
Add PTM clock granularity information (Bjorn Helgaas)
Add pci_enable_ptm() for drivers to enable PTM on endpoints (Bjorn Helgaas)
Generic host bridge driver
Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
Make explicitly non-modular (Paul Gortmaker)
Altera host bridge driver
Remove redundant platform_get_resource() return value check (Bjorn Helgaas)
Poll for link training status after retraining the link (Ley Foon Tan)
Rework config accessors for use without a struct pci_bus (Ley Foon Tan)
Move retrain from fixup to altera_pcie_host_init() (Ley Foon Tan)
Make MSI explicitly non-modular (Paul Gortmaker)
Make explicitly non-modular (Paul Gortmaker)
Relax device number checking to allow SR-IOV (Po Liu)
ARM Versatile host bridge driver
Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
Axis ARTPEC-6 host bridge driver
Drop __init from artpec6_add_pcie_port() (Niklas Cassel)
Freescale i.MX6 host bridge driver
Make explicitly non-modular (Paul Gortmaker)
Intel VMD host bridge driver
Add quirk for AER to ignore source ID (Jon Derrick)
Allocate IRQ lists with correct MSI-X count (Jon Derrick)
Convert to use pci_alloc_irq_vectors() API (Jon Derrick)
Eliminate vmd_vector member from list type (Jon Derrick)
Eliminate index member from IRQ list (Jon Derrick)
Synchronize with RCU freeing MSI IRQ descs (Keith Busch)
Request userspace control of PCIe hotplug indicators (Keith Busch)
Move VMD driver to drivers/pci/host (Keith Busch)
Marvell Aardvark host bridge driver
Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
Remove redundant dev_err call in advk_pcie_probe() (Wei Yongjun)
Microsoft Hyper-V host bridge driver
Use zero-length array in struct pci_packet (Dexuan Cui)
Use pci_function_description[0] in struct definitions (Dexuan Cui)
Remove the unused 'wrk' in struct hv_pcibus_device (Dexuan Cui)
Handle vmbus_sendpacket() failure in hv_compose_msi_msg() (Dexuan Cui)
Handle hv_pci_generic_compl() error case (Dexuan Cui)
Use list_move_tail() instead of list_del() + list_add_tail() (Wei Yongjun)
NVIDIA Tegra host bridge driver
Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
Remove redundant _data suffix (Thierry Reding)
Use of_device_get_match_data() (Thierry Reding)
Qualcomm host bridge driver
Make explicitly non-modular (Paul Gortmaker)
Renesas R-Car host bridge driver
Consolidate register space lookup and ioremap (Bjorn Helgaas)
Don't disable/unprepare clocks on prepare/enable failure (Geert Uytterhoeven)
Add multi-MSI support (Grigory Kletsko)
Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
Fix some checkpatch warnings (Sergei Shtylyov)
Try increasing PCIe link speed to 5 GT/s at boot (Sergei Shtylyov)
Rockchip host bridge driver
Add DT bindings for Rockchip PCIe controller (Shawn Lin)
Add Rockchip PCIe controller support (Shawn Lin)
Improve the deassert sequence of four reset pins (Shawn Lin)
Fix wrong transmitted FTS count (Shawn Lin)
Increase the Max Credit update interval (Rajat Jain)
Samsung Exynos host bridge driver
Make explicitly non-modular (Paul Gortmaker)
ST Microelectronics SPEAr13xx host bridge driver
Make explicitly non-modular (Paul Gortmaker)
Synopsys DesignWare host bridge driver
Return data directly from dw_pcie_readl_rc() (Bjorn Helgaas)
Exchange viewport of `MEMORYs' and `CFGs/IOs' (Dong Bo)
Check LTSSM training bit before deciding link is up (Jisheng Zhang)
Move link wait definitions to .c file (Joao Pinto)
Wait for iATU enable (Joao Pinto)
Add iATU Unroll feature (Joao Pinto)
Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
Make explicitly non-modular (Paul Gortmaker)
Relax device number checking to allow SR-IOV (Po Liu)
Keep viewport fixed for IO transaction if num_viewport > 2 (Pratyush Anand)
Remove redundant platform_get_resource() return value check (Wei Yongjun)
TI DRA7xx host bridge driver
Make explicitly non-modular (Paul Gortmaker)
TI Keystone host bridge driver
Propagate request_irq() failure (Wei Yongjun)
Xilinx AXI host bridge driver
Keep both legacy and MSI interrupt domain references (Bharat Kumar Gogada)
Clear interrupt register for invalid interrupt (Bharat Kumar Gogada)
Clear correct MSI set bit (Bharat Kumar Gogada)
Dispose of MSI virtual IRQ (Bharat Kumar Gogada)
Make explicitly non-modular (Paul Gortmaker)
Relax device number checking to allow SR-IOV (Po Liu)
Xilinx NWL host bridge driver
Expand error logging (Bharat Kumar Gogada)
Enable all MSI interrupts using MSI mask (Bharat Kumar Gogada)
Make explicitly non-modular (Paul Gortmaker)
Miscellaneous
Drop CONFIG_KEXEC_CORE ifdeffery (Lukas Wunner)
portdrv: Make explicitly non-modular (Paul Gortmaker)
Make DPC explicitly non-modular (Paul Gortmaker)
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Merge tag 'pci-v4.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Summary of PCI changes for the v4.9 merge window:
Enumeration:
- microblaze: Add multidomain support for procfs (Bharat Kumar Gogada)
Resource management:
- Ignore requested alignment for PROBE_ONLY and fixed resources (Yongji Xie)
- Ignore requested alignment for VF BARs (Yongji Xie)
PCI device hotplug:
- Make core explicitly non-modular (Paul Gortmaker)
PCIe native device hotplug:
- Rename pcie_isr() locals for clarity (Bjorn Helgaas)
- Return IRQ_NONE when we can't read interrupt status (Bjorn Helgaas)
- Remove unnecessary guard (Bjorn Helgaas)
- Clean up dmesg "Slot(%s)" messages (Bjorn Helgaas)
- Remove useless pciehp_get_latch_status() calls (Bjorn Helgaas)
- Clear attention LED on device add (Keith Busch)
- Allow exclusive userspace control of indicators (Keith Busch)
- Process all hotplug events before looking for new ones (Mayurkumar Patel)
- Don't re-read Slot Status when queuing hotplug event (Mayurkumar Patel)
- Don't re-read Slot Status when handling surprise event (Mayurkumar Patel)
- Make explicitly non-modular (Paul Gortmaker)
Power management:
- Afford direct-complete to devices with non-standard PM (Lukas Wunner)
- Query platform firmware for device power state (Lukas Wunner)
- Recognize D3cold in pci_update_current_state() (Lukas Wunner)
- Avoid unnecessary resume after direct-complete (Lukas Wunner)
- Make explicitly non-modular (Paul Gortmaker)
Virtualization:
- Mark Atheros AR9580 to avoid bus reset (Maik Broemme)
- Check for pci_setup_device() failure in pci_iov_add_virtfn() (Po Liu)
MSI:
- Enable PCI_MSI_IRQ_DOMAIN support for ARC (Joao Pinto)
AER:
- Remove aerdriver.nosourceid kernel parameter (Bjorn Helgaas)
- Remove aerdriver.forceload kernel parameter (Bjorn Helgaas)
- Fix aer_probe() kernel-doc comment (Cao jin)
- Add bus flag to skip source ID matching (Jon Derrick)
- Avoid memory allocation in interrupt handling path (Jon Derrick)
- Cache capability position (Keith Busch)
- Make explicitly non-modular (Paul Gortmaker)
- Remove duplicate AER severity translation (Tyler Baicar)
- Send correct severity to calculate AER severity (Tyler Baicar)
Precision Time Measurement:
- Add Precision Time Measurement (PTM) support (Jonathan Yong)
- Add PTM clock granularity information (Bjorn Helgaas)
- Add pci_enable_ptm() for drivers to enable PTM on endpoints (Bjorn Helgaas)
Generic host bridge driver:
- Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
- Make explicitly non-modular (Paul Gortmaker)
Altera host bridge driver:
- Remove redundant platform_get_resource() return value check (Bjorn Helgaas)
- Poll for link training status after retraining the link (Ley Foon Tan)
- Rework config accessors for use without a struct pci_bus (Ley Foon Tan)
- Move retrain from fixup to altera_pcie_host_init() (Ley Foon Tan)
- Make MSI explicitly non-modular (Paul Gortmaker)
- Make explicitly non-modular (Paul Gortmaker)
- Relax device number checking to allow SR-IOV (Po Liu)
ARM Versatile host bridge driver:
- Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
Axis ARTPEC-6 host bridge driver:
- Drop __init from artpec6_add_pcie_port() (Niklas Cassel)
Freescale i.MX6 host bridge driver:
- Make explicitly non-modular (Paul Gortmaker)
Intel VMD host bridge driver:
- Add quirk for AER to ignore source ID (Jon Derrick)
- Allocate IRQ lists with correct MSI-X count (Jon Derrick)
- Convert to use pci_alloc_irq_vectors() API (Jon Derrick)
- Eliminate vmd_vector member from list type (Jon Derrick)
- Eliminate index member from IRQ list (Jon Derrick)
- Synchronize with RCU freeing MSI IRQ descs (Keith Busch)
- Request userspace control of PCIe hotplug indicators (Keith Busch)
- Move VMD driver to drivers/pci/host (Keith Busch)
Marvell Aardvark host bridge driver:
- Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
- Remove redundant dev_err call in advk_pcie_probe() (Wei Yongjun)
Microsoft Hyper-V host bridge driver:
- Use zero-length array in struct pci_packet (Dexuan Cui)
- Use pci_function_description[0] in struct definitions (Dexuan Cui)
- Remove the unused 'wrk' in struct hv_pcibus_device (Dexuan Cui)
- Handle vmbus_sendpacket() failure in hv_compose_msi_msg() (Dexuan Cui)
- Handle hv_pci_generic_compl() error case (Dexuan Cui)
- Use list_move_tail() instead of list_del() + list_add_tail() (Wei Yongjun)
NVIDIA Tegra host bridge driver:
- Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
- Remove redundant _data suffix (Thierry Reding)
- Use of_device_get_match_data() (Thierry Reding)
Qualcomm host bridge driver:
- Make explicitly non-modular (Paul Gortmaker)
Renesas R-Car host bridge driver:
- Consolidate register space lookup and ioremap (Bjorn Helgaas)
- Don't disable/unprepare clocks on prepare/enable failure (Geert Uytterhoeven)
- Add multi-MSI support (Grigory Kletsko)
- Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
- Fix some checkpatch warnings (Sergei Shtylyov)
- Try increasing PCIe link speed to 5 GT/s at boot (Sergei Shtylyov)
Rockchip host bridge driver:
- Add DT bindings for Rockchip PCIe controller (Shawn Lin)
- Add Rockchip PCIe controller support (Shawn Lin)
- Improve the deassert sequence of four reset pins (Shawn Lin)
- Fix wrong transmitted FTS count (Shawn Lin)
- Increase the Max Credit update interval (Rajat Jain)
Samsung Exynos host bridge driver:
- Make explicitly non-modular (Paul Gortmaker)
ST Microelectronics SPEAr13xx host bridge driver:
- Make explicitly non-modular (Paul Gortmaker)
Synopsys DesignWare host bridge driver:
- Return data directly from dw_pcie_readl_rc() (Bjorn Helgaas)
- Exchange viewport of `MEMORYs' and `CFGs/IOs' (Dong Bo)
- Check LTSSM training bit before deciding link is up (Jisheng Zhang)
- Move link wait definitions to .c file (Joao Pinto)
- Wait for iATU enable (Joao Pinto)
- Add iATU Unroll feature (Joao Pinto)
- Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
- Make explicitly non-modular (Paul Gortmaker)
- Relax device number checking to allow SR-IOV (Po Liu)
- Keep viewport fixed for IO transaction if num_viewport > 2 (Pratyush Anand)
- Remove redundant platform_get_resource() return value check (Wei Yongjun)
TI DRA7xx host bridge driver:
- Make explicitly non-modular (Paul Gortmaker)
TI Keystone host bridge driver:
- Propagate request_irq() failure (Wei Yongjun)
Xilinx AXI host bridge driver:
- Keep both legacy and MSI interrupt domain references (Bharat Kumar Gogada)
- Clear interrupt register for invalid interrupt (Bharat Kumar Gogada)
- Clear correct MSI set bit (Bharat Kumar Gogada)
- Dispose of MSI virtual IRQ (Bharat Kumar Gogada)
- Make explicitly non-modular (Paul Gortmaker)
- Relax device number checking to allow SR-IOV (Po Liu)
Xilinx NWL host bridge driver:
- Expand error logging (Bharat Kumar Gogada)
- Enable all MSI interrupts using MSI mask (Bharat Kumar Gogada)
- Make explicitly non-modular (Paul Gortmaker)
Miscellaneous:
- Drop CONFIG_KEXEC_CORE ifdeffery (Lukas Wunner)
- portdrv: Make explicitly non-modular (Paul Gortmaker)
- Make DPC explicitly non-modular (Paul Gortmaker)"
* tag 'pci-v4.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (105 commits)
x86/PCI: VMD: Move VMD driver to drivers/pci/host
PCI: rockchip: Fix wrong transmitted FTS count
PCI: rockchip: Improve the deassert sequence of four reset pins
PCI: rockchip: Increase the Max Credit update interval
PCI: rcar: Try increasing PCIe link speed to 5 GT/s at boot
PCI/AER: Fix aer_probe() kernel-doc comment
PCI: Ignore requested alignment for VF BARs
PCI: Ignore requested alignment for PROBE_ONLY and fixed resources
PCI: Avoid unnecessary resume after direct-complete
PCI: Recognize D3cold in pci_update_current_state()
PCI: Query platform firmware for device power state
PCI: Afford direct-complete to devices with non-standard PM
PCI/AER: Cache capability position
PCI/AER: Avoid memory allocation in interrupt handling path
x86/PCI: VMD: Request userspace control of PCIe hotplug indicators
PCI: pciehp: Allow exclusive userspace control of indicators
ACPI / APEI: Send correct severity to calculate AER severity
PCI/AER: Remove duplicate AER severity translation
x86/PCI: VMD: Synchronize with RCU freeing MSI IRQ descs
x86/PCI: VMD: Eliminate index member from IRQ list
...
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Keith Busch
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181ffd19cc |
x86/PCI: VMD: Move VMD driver to drivers/pci/host
Move the driver source and Kconfig to the PCI host bridge drivers directory and move the config option to a more appropriate sub-menu instead of occupying the top-level location. Update the Kconfig option with the X86_64 dependency that was implicitly included from the previous location, and add information about the module name when built as a loadable module. Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Jon Derrick <jonathan.derrick@intel.com> |
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Linus Torvalds
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a6c4e4cd44 |
Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform changes from Ingo Molnar: "The main changes in this cycle were: - SGI UV updates (Andrew Banman) - Intel MID updates (Andy Shevchenko) - Initial Mellanox systems platform (Vadim Pasternak)" * 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/platform/mellanox: Fix return value check in mlxplat_init() x86/platform/mellanox: Introduce support for Mellanox systems platform x86/platform/uv/BAU: Add UV4-specific functions x86/platform/uv/BAU: Fix payload queue setup on UV4 hardware x86/platform/uv/BAU: Disable software timeout on UV4 hardware x86/platform/uv/BAU: Populate ->uvhub_version with UV4 version information x86/platform/uv/BAU: Use generic function pointers x86/platform/uv/BAU: Add generic function pointers x86/platform/uv/BAU: Convert uv_physnodeaddr() use to uv_gpa_to_offset() x86/platform/uv/BAU: Clean up pq_init() x86/platform/uv/BAU: Clean up and update printks x86/platform/uv/BAU: Clean up vertical alignment x86/platform/intel-mid: Keep SRAM powered on at boot x86/platform/intel-mid: Add Intel Penwell to ID table x86/cpu: Rename Merrifield2 to Moorefield x86/platform/intel-mid: Implement power off sequence x86/platform/intel-mid: Enable SD card detection on Merrifield x86/platform/intel-mid: Enable WiFi on Intel Edison x86/platform/intel-mid: Run PWRMU command immediately |
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Linus Torvalds
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1a4a2bc460 |
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull low-level x86 updates from Ingo Molnar:
"In this cycle this topic tree has become one of those 'super topics'
that accumulated a lot of changes:
- Add CONFIG_VMAP_STACK=y support to the core kernel and enable it on
x86 - preceded by an array of changes. v4.8 saw preparatory changes
in this area already - this is the rest of the work. Includes the
thread stack caching performance optimization. (Andy Lutomirski)
- switch_to() cleanups and all around enhancements. (Brian Gerst)
- A large number of dumpstack infrastructure enhancements and an
unwinder abstraction. The secret long term plan is safe(r) live
patching plus maybe another attempt at debuginfo based unwinding -
but all these current bits are standalone enhancements in a frame
pointer based debug environment as well. (Josh Poimboeuf)
- More __ro_after_init and const annotations. (Kees Cook)
- Enable KASLR for the vmemmap memory region. (Thomas Garnier)"
[ The virtually mapped stack changes are pretty fundamental, and not
x86-specific per se, even if they are only used on x86 right now. ]
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (70 commits)
x86/asm: Get rid of __read_cr4_safe()
thread_info: Use unsigned long for flags
x86/alternatives: Add stack frame dependency to alternative_call_2()
x86/dumpstack: Fix show_stack() task pointer regression
x86/dumpstack: Remove dump_trace() and related callbacks
x86/dumpstack: Convert show_trace_log_lvl() to use the new unwinder
oprofile/x86: Convert x86_backtrace() to use the new unwinder
x86/stacktrace: Convert save_stack_trace_*() to use the new unwinder
perf/x86: Convert perf_callchain_kernel() to use the new unwinder
x86/unwind: Add new unwind interface and implementations
x86/dumpstack: Remove NULL task pointer convention
fork: Optimize task creation by caching two thread stacks per CPU if CONFIG_VMAP_STACK=y
sched/core: Free the stack early if CONFIG_THREAD_INFO_IN_TASK
lib/syscall: Pin the task stack in collect_syscall()
x86/process: Pin the target stack in get_wchan()
x86/dumpstack: Pin the target stack when dumping it
kthread: Pin the stack via try_get_task_stack()/put_task_stack() in to_live_kthread() function
sched/core: Add try_get_task_stack() and put_task_stack()
x86/entry/64: Fix a minor comment rebase error
iommu/amd: Don't put completion-wait semaphore on stack
...
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Peter Zijlstra
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cfd8983f03 |
x86, locking/spinlocks: Remove ticket (spin)lock implementation
We've unconditionally used the queued spinlock for many releases now. Its time to remove the old ticket lock code. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Waiman Long <waiman.long@hpe.com> Cc: Waiman.Long@hpe.com Cc: david.vrabel@citrix.com Cc: dhowells@redhat.com Cc: pbonzini@redhat.com Cc: xen-devel@lists.xenproject.org Link: http://lkml.kernel.org/r/20160518184302.GO3193@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Vadim Pasternak
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58cbbee239 |
x86/platform/mellanox: Introduce support for Mellanox systems platform
Enable system support for the Mellanox Technologies platform, which provides support for the next Mellanox basic systems: "msx6710", "msx6720", "msb7700", "msn2700", "msx1410", "msn2410", "msb7800", "msn2740", "msn2100" and also various number of derivative systems from the above basic types. The Kconfig controlling compilation of this code is: MLX_PLATFORM Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Cc: jiri@resnulli.us Cc: gregkh@linuxfoundation.org Cc: platform-driver-x86@vger.kernel.org Cc: geert@linux-m68k.org Cc: linux@roeck-us.net Cc: akpm@linux-foundation.org Cc: mchehab@kernel.org Cc: davem@davemloft.net Cc: kvalo@codeaurora.org Link: http://lkml.kernel.org/r/1474578822-33805-1-git-send-email-vadimp@mellanox.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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Andy Lutomirski
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15f4eae70d |
x86: Move thread_info into task_struct
Now that most of the thread_info users have been cleaned up, this is straightforward. Most of this code was written by Linus. Originally-from: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jann Horn <jann@thejh.net> Cc: Josh Poimboeuf <jpoimboe@redhat.com> 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/a50eab40abeaec9cb9a9e3cbdeafd32190206654.1473801993.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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d4b80afbba |
Merge branch 'linus' into x86/asm, to pick up recent fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Josh Poimboeuf
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0d025d271e |
mm/usercopy: get rid of CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
There are three usercopy warnings which are currently being silenced for
gcc 4.6 and newer:
1) "copy_from_user() buffer size is too small" compile warning/error
This is a static warning which happens when object size and copy size
are both const, and copy size > object size. I didn't see any false
positives for this one. So the function warning attribute seems to
be working fine here.
Note this scenario is always a bug and so I think it should be
changed to *always* be an error, regardless of
CONFIG_DEBUG_STRICT_USER_COPY_CHECKS.
2) "copy_from_user() buffer size is not provably correct" compile warning
This is another static warning which happens when I enable
__compiletime_object_size() for new compilers (and
CONFIG_DEBUG_STRICT_USER_COPY_CHECKS). It happens when object size
is const, but copy size is *not*. In this case there's no way to
compare the two at build time, so it gives the warning. (Note the
warning is a byproduct of the fact that gcc has no way of knowing
whether the overflow function will be called, so the call isn't dead
code and the warning attribute is activated.)
So this warning seems to only indicate "this is an unusual pattern,
maybe you should check it out" rather than "this is a bug".
I get 102(!) of these warnings with allyesconfig and the
__compiletime_object_size() gcc check removed. I don't know if there
are any real bugs hiding in there, but from looking at a small
sample, I didn't see any. According to Kees, it does sometimes find
real bugs. But the false positive rate seems high.
3) "Buffer overflow detected" runtime warning
This is a runtime warning where object size is const, and copy size >
object size.
All three warnings (both static and runtime) were completely disabled
for gcc 4.6 with the following commit:
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Josh Poimboeuf
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e4a744ef2f |
ftrace: Remove CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST from config
Make HAVE_FUNCTION_GRAPH_FP_TEST a normal define, independent from kconfig. This removes some config file pollution and simplifies the checking for the fp test. Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Byungchul Park <byungchul.park@lge.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/2c4e5f05054d6d367f702fd153af7a0109dd5c81.1471607358.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Andy Lutomirski
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e37e43a497 |
x86/mm/64: Enable vmapped stacks (CONFIG_HAVE_ARCH_VMAP_STACK=y)
This allows x86_64 kernels to enable vmapped stacks by setting HAVE_ARCH_VMAP_STACK=y - which enables the CONFIG_VMAP_STACK=y high level Kconfig option. There are a couple of interesting bits: First, x86 lazily faults in top-level paging entries for the vmalloc area. This won't work if we get a page fault while trying to access the stack: the CPU will promote it to a double-fault and we'll die. To avoid this problem, probe the new stack when switching stacks and forcibly populate the pgd entry for the stack when switching mms. Second, once we have guard pages around the stack, we'll want to detect and handle stack overflow. I didn't enable it on x86_32. We'd need to rework the double-fault code a bit and I'm concerned about running out of vmalloc virtual addresses under some workloads. This patch, by itself, will behave somewhat erratically when the stack overflows while RSP is still more than a few tens of bytes above the bottom of the stack. Specifically, we'll get #PF and make it to no_context and them oops without reliably triggering a double-fault, and no_context doesn't know about stack overflows. The next patch will improve that case. Thank you to Nadav and Brian for helping me pay enough attention to the SDM to hopefully get this right. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Nadav Amit <nadav.amit@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/c88f3e2920b18e6cc621d772a04a62c06869037e.1470907718.git.luto@kernel.org [ Minor edits. ] Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Linus Torvalds
|
1eccfa090e |
Implements HARDENED_USERCOPY verification of copy_to_user/copy_from_user
bounds checking for most architectures on SLAB and SLUB. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Kees Cook <kees@outflux.net> iQIcBAABCgAGBQJXl9tlAAoJEIly9N/cbcAm5BoP/ikTtDp2bFw1sn92yHTnIWzl O+dcKVAeRgjfnSvPfb1JITpaM58exQSaDsPBeR0DbVzU1zDdhLcwHHiQupFh98Ka vBZthbrlL/u4NB26enEEW0iyA32BsxYBMnIu0z5ux9RbZflmQwGQ0c0rvy3dJ7/b FzB5ayVST5y/a0m6/sImeeExh78GU9rsMb1XmJRMwlJAy6miDz/F9TP0LnuW6PhG J5XC99ygNJS1pQBLACRsrZw6ImgBxXnWCok6tWPMxFfD+rJBU2//wqS+HozyMWHL iYP7+ytVo/ZVok4114X/V4Oof3a6wqgpBuYrivJ228QO+UsLYbYLo6sZ8kRK7VFm 9GgHo/8rWB1T9lBbSaa7UL5r0dVNNLjFGS42vwV+YlgUMQ1A35VRojO0jUnJSIQU Ug1IxKmylLd0nEcwD8/l3DXeQABsfL8GsoKW0OtdTZtW4RND4gzq34LK6t7hvayF kUkLg1OLNdUJwOi16M/rhugwYFZIMfoxQtjkRXKWN4RZ2QgSHnx2lhqNmRGPAXBG uy21wlzUTfLTqTpoeOyHzJwyF2qf2y4nsziBMhvmlrUvIzW1LIrYUKCNT4HR8Sh5 lC2WMGYuIqaiu+NOF3v6CgvKd9UW+mxMRyPEybH8mEgfm+FLZlWABiBjIUpSEZuB JFfuMv1zlljj/okIQRg8 =USIR -----END PGP SIGNATURE----- Merge tag 'usercopy-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull usercopy protection from Kees Cook: "Tbhis implements HARDENED_USERCOPY verification of copy_to_user and copy_from_user bounds checking for most architectures on SLAB and SLUB" * tag 'usercopy-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: mm: SLUB hardened usercopy support mm: SLAB hardened usercopy support s390/uaccess: Enable hardened usercopy sparc/uaccess: Enable hardened usercopy powerpc/uaccess: Enable hardened usercopy ia64/uaccess: Enable hardened usercopy arm64/uaccess: Enable hardened usercopy ARM: uaccess: Enable hardened usercopy x86/uaccess: Enable hardened usercopy mm: Hardened usercopy mm: Implement stack frame object validation mm: Add is_migrate_cma_page |
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Linus Torvalds
|
6c84239d59 |
RTC for 4.8
Cleanups:
- huge cleanup of rtc-generic and char/genrtc this allowed to cleanup rtc-cmos,
rtc-sh, rtc-m68k, rtc-powerpc and rtc-parisc
- move mn10300 to rtc-cmos
Subsystem:
- fix wakealarms after hibernate
- multiples fixes for rctest
- simplify implementations of .read_alarm
New drivers:
- Maxim MAX6916
Drivers:
- ds1307: fix weekday
- m41t80: add wakeup support
- pcf85063: add support for PCF85063A variant
- rv8803: extend i2c fix and other fixes
- s35390a: fix alarm reading, this fixes instant reboot after shutdown for QNAP
TS-41x
- s3c: clock fixes
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Merge tag 'rtc-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"RTC for 4.8
Cleanups:
- huge cleanup of rtc-generic and char/genrtc this allowed to cleanup
rtc-cmos, rtc-sh, rtc-m68k, rtc-powerpc and rtc-parisc
- move mn10300 to rtc-cmos
Subsystem:
- fix wakealarms after hibernate
- multiples fixes for rctest
- simplify implementations of .read_alarm
New drivers:
- Maxim MAX6916
Drivers:
- ds1307: fix weekday
- m41t80: add wakeup support
- pcf85063: add support for PCF85063A variant
- rv8803: extend i2c fix and other fixes
- s35390a: fix alarm reading, this fixes instant reboot after
shutdown for QNAP TS-41x
- s3c: clock fixes"
* tag 'rtc-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (65 commits)
rtc: rv8803: Clear V1F when setting the time
rtc: rv8803: Stop the clock while setting the time
rtc: rv8803: Always apply the I²C workaround
rtc: rv8803: Fix read day of week
rtc: rv8803: Remove the check for valid time
rtc: rv8803: Kconfig: Indicate rx8900 support
rtc: asm9260: remove .owner field for driver
rtc: at91sam9: Fix missing spin_lock_init()
rtc: m41t80: add suspend handlers for alarm IRQ
rtc: m41t80: make it a real error message
rtc: pcf85063: Add support for the PCF85063A device
rtc: pcf85063: fix year range
rtc: hym8563: in .read_alarm set .tm_sec to 0 to signal minute accuracy
rtc: explicitly set tm_sec = 0 for drivers with minute accurancy
rtc: s3c: Add s3c_rtc_{enable/disable}_clk in s3c_rtc_setfreq()
rtc: s3c: Remove unnecessary call to disable already disabled clock
rtc: abx80x: use devm_add_action_or_reset()
rtc: m41t80: use devm_add_action_or_reset()
rtc: fix a typo and reduce three empty lines to one
rtc: s35390a: improve two comments in .set_alarm
...
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Linus Torvalds
|
f716a85cd6 |
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild updates from Michal Marek:
- GCC plugin support by Emese Revfy from grsecurity, with a fixup from
Kees Cook. The plugins are meant to be used for static analysis of
the kernel code. Two plugins are provided already.
- reduction of the gcc commandline by Arnd Bergmann.
- IS_ENABLED / IS_REACHABLE macro enhancements by Masahiro Yamada
- bin2c fix by Michael Tautschnig
- setlocalversion fix by Wolfram Sang
* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
gcc-plugins: disable under COMPILE_TEST
kbuild: Abort build on bad stack protector flag
scripts: Fix size mismatch of kexec_purgatory_size
kbuild: make samples depend on headers_install
Kbuild: don't add obj tree in additional includes
Kbuild: arch: look for generated headers in obtree
Kbuild: always prefix objtree in LINUXINCLUDE
Kbuild: avoid duplicate include path
Kbuild: don't add ../../ to include path
vmlinux.lds.h: replace config_enabled() with IS_ENABLED()
kconfig.h: allow to use IS_{ENABLE,REACHABLE} in macro expansion
kconfig.h: use already defined macros for IS_REACHABLE() define
export.h: use __is_defined() to check if __KSYM_* is defined
kconfig.h: use __is_defined() to check if MODULE is defined
kbuild: setlocalversion: print error to STDERR
Add sancov plugin
Add Cyclomatic complexity GCC plugin
GCC plugin infrastructure
Shared library support
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Linus Torvalds
|
e663107fa1 |
ACPI material for v4.8-rc1
- Support for ACPI SSDT overlays allowing Secondary System
Description Tables (SSDTs) to be loaded at any time from EFI
variables or via configfs (Octavian Purdila, Mika Westerberg).
- Support for the ACPI LPI (Low-Power Idle) feature introduced in
ACPI 6.0 and allowing processor idle states to be represented in
ACPI tables in a hierarchical way (with the help of Processor
Container objects) and support for ACPI idle states management
on ARM64, based on LPI (Sudeep Holla).
- General improvements of ACPI support for NUMA and ARM64 support
for ACPI-based NUMA (Hanjun Guo, David Daney, Robert Richter).
- General improvements of the ACPI table upgrade mechanism and
ARM64 support for that feature (Aleksey Makarov, Jon Masters).
- Support for the Boot Error Record Table (BERT) in APEI and
improvements of kernel messages printed by the error injection
code (Huang Ying, Borislav Petkov).
- New driver for the Intel Broxton WhiskeyCove PMIC operation
region and support for the REGS operation region on Broxton,
PMIC code cleanups (Bin Gao, Felipe Balbi, Paul Gortmaker).
- New driver for the power participant device which is part of the
Dynamic Power and Thermal Framework (DPTF) and DPTF-related code
reorganization (Srinivas Pandruvada).
- Support for the platform-initiated graceful shutdown feature
introduced in ACPI 6.1 (Prashanth Prakash).
- ACPI button driver update related to lid input events generated
automatically on initialization and system resume that have been
problematic for some time (Lv Zheng).
- ACPI EC driver cleanups (Lv Zheng).
- Documentation of the ACPICA release automation process and the
in-kernel ACPI AML debugger (Lv Zheng).
- New blacklist entry and two fixes for the ACPI backlight driver
(Alex Hung, Arvind Yadav, Ralf Gerbig).
- Cleanups of the ACPI pci_slot driver (Joe Perches, Paul Gortmaker).
- ACPI CPPC code changes to make it more robust against possible
defects in ACPI tables and new symbol definitions for PCC (Hoan
Tran).
- System reboot code modification to execute the ACPI _PTS (Prepare
To Sleep) method in addition to _TTS (Ocean He).
- ACPICA-related change to carry out lock ordering checks in ACPICA
if ACPICA debug is enabled in the kernel (Lv Zheng).
- Assorted minor fixes and cleanups (Andy Shevchenko, Baoquan He,
Bhaktipriya Shridhar, Paul Gortmaker, Rafael Wysocki).
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Merge tag 'acpi-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"The new feaures here are the support for ACPI overlays (allowing ACPI
tables to be loaded at any time from EFI variables or via configfs)
and the LPI (Low-Power Idle) support. Also notable is the ACPI-based
NUMA support for ARM64.
Apart from that we have two new drivers, for the DPTF (Dynamic Power
and Thermal Framework) power participant device and for the Intel
Broxton WhiskeyCove PMIC, some more PMIC-related changes, support for
the Boot Error Record Table (BERT) in APEI and support for
platform-initiated graceful shutdown.
Plus two new pieces of documentation and usual assorted fixes and
cleanups in quite a few places.
Specifics:
- Support for ACPI SSDT overlays allowing Secondary System
Description Tables (SSDTs) to be loaded at any time from EFI
variables or via configfs (Octavian Purdila, Mika Westerberg).
- Support for the ACPI LPI (Low-Power Idle) feature introduced in
ACPI 6.0 and allowing processor idle states to be represented in
ACPI tables in a hierarchical way (with the help of Processor
Container objects) and support for ACPI idle states management on
ARM64, based on LPI (Sudeep Holla).
- General improvements of ACPI support for NUMA and ARM64 support for
ACPI-based NUMA (Hanjun Guo, David Daney, Robert Richter).
- General improvements of the ACPI table upgrade mechanism and ARM64
support for that feature (Aleksey Makarov, Jon Masters).
- Support for the Boot Error Record Table (BERT) in APEI and
improvements of kernel messages printed by the error injection code
(Huang Ying, Borislav Petkov).
- New driver for the Intel Broxton WhiskeyCove PMIC operation region
and support for the REGS operation region on Broxton, PMIC code
cleanups (Bin Gao, Felipe Balbi, Paul Gortmaker).
- New driver for the power participant device which is part of the
Dynamic Power and Thermal Framework (DPTF) and DPTF-related code
reorganization (Srinivas Pandruvada).
- Support for the platform-initiated graceful shutdown feature
introduced in ACPI 6.1 (Prashanth Prakash).
- ACPI button driver update related to lid input events generated
automatically on initialization and system resume that have been
problematic for some time (Lv Zheng).
- ACPI EC driver cleanups (Lv Zheng).
- Documentation of the ACPICA release automation process and the
in-kernel ACPI AML debugger (Lv Zheng).
- New blacklist entry and two fixes for the ACPI backlight driver
(Alex Hung, Arvind Yadav, Ralf Gerbig).
- Cleanups of the ACPI pci_slot driver (Joe Perches, Paul Gortmaker).
- ACPI CPPC code changes to make it more robust against possible
defects in ACPI tables and new symbol definitions for PCC (Hoan
Tran).
- System reboot code modification to execute the ACPI _PTS (Prepare
To Sleep) method in addition to _TTS (Ocean He).
- ACPICA-related change to carry out lock ordering checks in ACPICA
if ACPICA debug is enabled in the kernel (Lv Zheng).
- Assorted minor fixes and cleanups (Andy Shevchenko, Baoquan He,
Bhaktipriya Shridhar, Paul Gortmaker, Rafael Wysocki)"
* tag 'acpi-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (71 commits)
ACPI: enable ACPI_PROCESSOR_IDLE on ARM64
arm64: add support for ACPI Low Power Idle(LPI)
drivers: firmware: psci: initialise idle states using ACPI LPI
cpuidle: introduce CPU_PM_CPU_IDLE_ENTER macro for ARM{32, 64}
arm64: cpuidle: drop __init section marker to arm_cpuidle_init
ACPI / processor_idle: Add support for Low Power Idle(LPI) states
ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE
ACPI / DPTF: move int340x_thermal.c to the DPTF folder
ACPI / DPTF: Add DPTF power participant driver
ACPI / lpat: make it explicitly non-modular
ACPI / dock: make dock explicitly non-modular
ACPI / PCI: make pci_slot explicitly non-modular
ACPI / PMIC: remove modular references from non-modular code
ACPICA: Linux: Enable ACPI_MUTEX_DEBUG for Linux kernel
ACPI: Rename configfs.c to acpi_configfs.c to prevent link error
ACPI / debugger: Add AML debugger documentation
ACPI: Add documentation describing ACPICA release automation
ACPI: add support for loading SSDTs via configfs
ACPI: add support for configfs
efi / ACPI: load SSTDs from EFI variables
...
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Kees Cook
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5b710f34e1 |
x86/uaccess: Enable hardened usercopy
Enables CONFIG_HARDENED_USERCOPY checks on x86. This is done both in copy_*_user() and __copy_*_user() because copy_*_user() actually calls down to _copy_*_user() and not __copy_*_user(). Based on code from PaX and grsecurity. Signed-off-by: Kees Cook <keescook@chromium.org> Tested-by: Valdis Kletnieks <valdis.kletnieks@vt.edu> |
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Kees Cook
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0f60a8efe4 |
mm: Implement stack frame object validation
This creates per-architecture function arch_within_stack_frames() that should validate if a given object is contained by a kernel stack frame. Initial implementation is on x86. This is based on code from PaX. Signed-off-by: Kees Cook <keescook@chromium.org> |
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Linus Torvalds
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c265cc5c3c |
Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Ingo Molnar: "Three small cleanups" * 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: lguest: Read offset of device_cap later lguest: Read length of device_cap later x86: Do away with ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIB |
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Linus Torvalds
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77cd3d0c43 |
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:
"The main changes:
- add initial commits to randomize kernel memory section virtual
addresses, enabled via a new kernel option: RANDOMIZE_MEMORY
(Thomas Garnier, Kees Cook, Baoquan He, Yinghai Lu)
- enhance KASLR (RANDOMIZE_BASE) physical memory randomization (Kees
Cook)
- EBDA/BIOS region boot quirk cleanups (Andy Lutomirski, Ingo Molnar)
- misc cleanups/fixes"
* 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot: Simplify EBDA-vs-BIOS reservation logic
x86/boot: Clarify what x86_legacy_features.reserve_bios_regions does
x86/boot: Reorganize and clean up the BIOS area reservation code
x86/mm: Do not reference phys addr beyond kernel
x86/mm: Add memory hotplug support for KASLR memory randomization
x86/mm: Enable KASLR for vmalloc memory regions
x86/mm: Enable KASLR for physical mapping memory regions
x86/mm: Implement ASLR for kernel memory regions
x86/mm: Separate variable for trampoline PGD
x86/mm: Add PUD VA support for physical mapping
x86/mm: Update physical mapping variable names
x86/mm: Refactor KASLR entropy functions
x86/KASLR: Fix boot crash with certain memory configurations
x86/boot/64: Add forgotten end of function marker
x86/KASLR: Allow randomization below the load address
x86/KASLR: Extend kernel image physical address randomization to addresses larger than 4G
x86/KASLR: Randomize virtual address separately
x86/KASLR: Clarify identity map interface
x86/boot: Refuse to build with data relocations
x86/KASLR, x86/power: Remove x86 hibernation restrictions
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Ingo Molnar
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52e31f89cc |
Merge branch 'linus' into x86/asm, to pick up fixes before merging new changes
Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Thomas Garnier
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90397a4177 |
x86/mm: Add memory hotplug support for KASLR memory randomization
Add a new option (CONFIG_RANDOMIZE_MEMORY_PHYSICAL_PADDING) to define the padding used for the physical memory mapping section when KASLR memory is enabled. It ensures there is enough virtual address space when CONFIG_MEMORY_HOTPLUG is used. The default value is 10 terabytes. If CONFIG_MEMORY_HOTPLUG is not used, no space is reserved increasing the entropy available. Signed-off-by: Thomas Garnier <thgarnie@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Alexander Kuleshov <kuleshovmail@gmail.com> Cc: Alexander Popov <alpopov@ptsecurity.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Baoquan He <bhe@redhat.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bp@suse.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Dave Young <dyoung@redhat.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jan Beulich <JBeulich@suse.com> Cc: Joerg Roedel <jroedel@suse.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Lv Zheng <lv.zheng@intel.com> Cc: Mark Salter <msalter@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Toshi Kani <toshi.kani@hpe.com> Cc: Xiao Guangrong <guangrong.xiao@linux.intel.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: kernel-hardening@lists.openwall.com Cc: linux-doc@vger.kernel.org Link: http://lkml.kernel.org/r/1466556426-32664-10-git-send-email-keescook@chromium.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Thomas Garnier
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0483e1fa6e |
x86/mm: Implement ASLR for kernel memory regions
Randomizes the virtual address space of kernel memory regions for x86_64. This first patch adds the infrastructure and does not randomize any region. The following patches will randomize the physical memory mapping, vmalloc and vmemmap regions. This security feature mitigates exploits relying on predictable kernel addresses. These addresses can be used to disclose the kernel modules base addresses or corrupt specific structures to elevate privileges bypassing the current implementation of KASLR. This feature can be enabled with the CONFIG_RANDOMIZE_MEMORY option. The order of each memory region is not changed. The feature looks at the available space for the regions based on different configuration options and randomizes the base and space between each. The size of the physical memory mapping is the available physical memory. No performance impact was detected while testing the feature. Entropy is generated using the KASLR early boot functions now shared in the lib directory (originally written by Kees Cook). Randomization is done on PGD & PUD page table levels to increase possible addresses. The physical memory mapping code was adapted to support PUD level virtual addresses. This implementation on the best configuration provides 30,000 possible virtual addresses in average for each memory region. An additional low memory page is used to ensure each CPU can start with a PGD aligned virtual address (for realmode). x86/dump_pagetable was updated to correctly display each region. Updated documentation on x86_64 memory layout accordingly. Performance data, after all patches in the series: Kernbench shows almost no difference (-+ less than 1%): Before: Average Optimal load -j 12 Run (std deviation): Elapsed Time 102.63 (1.2695) User Time 1034.89 (1.18115) System Time 87.056 (0.456416) Percent CPU 1092.9 (13.892) Context Switches 199805 (3455.33) Sleeps 97907.8 (900.636) After: Average Optimal load -j 12 Run (std deviation): Elapsed Time 102.489 (1.10636) User Time 1034.86 (1.36053) System Time 87.764 (0.49345) Percent CPU 1095 (12.7715) Context Switches 199036 (4298.1) Sleeps 97681.6 (1031.11) Hackbench shows 0% difference on average (hackbench 90 repeated 10 times): attemp,before,after 1,0.076,0.069 2,0.072,0.069 3,0.066,0.066 4,0.066,0.068 5,0.066,0.067 6,0.066,0.069 7,0.067,0.066 8,0.063,0.067 9,0.067,0.065 10,0.068,0.071 average,0.0677,0.0677 Signed-off-by: Thomas Garnier <thgarnie@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Alexander Kuleshov <kuleshovmail@gmail.com> Cc: Alexander Popov <alpopov@ptsecurity.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Baoquan He <bhe@redhat.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bp@suse.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Dave Young <dyoung@redhat.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jan Beulich <JBeulich@suse.com> Cc: Joerg Roedel <jroedel@suse.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Lv Zheng <lv.zheng@intel.com> Cc: Mark Salter <msalter@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Toshi Kani <toshi.kani@hpe.com> Cc: Xiao Guangrong <guangrong.xiao@linux.intel.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: kernel-hardening@lists.openwall.com Cc: linux-doc@vger.kernel.org Link: http://lkml.kernel.org/r/1466556426-32664-6-git-send-email-keescook@chromium.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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9e7f7f5425 |
Merge branch 'x86/mm' into x86/boot, to pick up dependencies
Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Kees Cook
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ed9f007ee6 |
x86/KASLR: Extend kernel image physical address randomization to addresses larger than 4G
We want the physical address to be randomized anywhere between 16MB and the top of physical memory (up to 64TB). This patch exchanges the prior slots[] array for the new slot_areas[] array, and lifts the limitation of KERNEL_IMAGE_SIZE on the physical address offset for 64-bit. As before, process_e820_entry() walks memory and populates slot_areas[], splitting on any detected mem_avoid collisions. Finally, since the slots[] array and its associated functions are not needed any more, so they are removed. Based on earlier patches by Baoquan He. Originally-from: Baoquan He <bhe@redhat.com> Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Baoquan He <bhe@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: H.J. Lu <hjl.tools@gmail.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1464216334-17200-5-git-send-email-keescook@chromium.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Arnd Bergmann
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d6faca40f4 |
rtc: move mc146818 helper functions out-of-line
The mc146818_get_time/mc146818_set_time functions are rather large inline functions in a global header file and are used in several drivers and in x86 specific code. Here we move them into a separate .c file that is compiled whenever any of the users require it. This also lets us remove the linux/acpi.h header inclusion from mc146818rtc.h, which in turn avoids some warnings about duplicate definition of the TRUE/FALSE macros. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> |
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Aleksey Makarov
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91dda51a11 |
ACPI / tables: introduce ARCH_HAS_ACPI_TABLE_UPGRADE
We want to use the table upgrade feature in ARM64. Introduce a new configuration option that allows that. Signed-off-by: Aleksey Makarov <aleksey.makarov@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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William Breathitt Gray
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3a4955111a |
isa: Allow ISA-style drivers on modern systems
Several modern devices, such as PC/104 cards, are expected to run on modern systems via an ISA bus interface. Since ISA is a legacy interface for most modern architectures, ISA support should remain disabled in general. Support for ISA-style drivers should be enabled on a per driver basis. To allow ISA-style drivers on modern systems, this patch introduces the ISA_BUS_API and ISA_BUS Kconfig options. The ISA bus driver will now build conditionally on the ISA_BUS_API Kconfig option, which defaults to the legacy ISA Kconfig option. The ISA_BUS Kconfig option allows the ISA_BUS_API Kconfig option to be selected on architectures which do not enable ISA (e.g. X86_64). The ISA_BUS Kconfig option is currently only implemented for X86 architectures. Other architectures may have their own ISA_BUS Kconfig options added as required. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Linus Walleij
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0145071b33 |
x86: Do away with ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIB
This replaces: - "select ARCH_REQUIRE_GPIOLIB" with "select GPIOLIB" as this can now be selected directly. - "select ARCH_WANT_OPTIONAL_GPIOLIB" with no dependency: GPIOLIB is now selectable by everyone, so we need not declare our intent to select it. When ordering the symbols the following rationale was used: if the selects were in alphabetical order, I moved select GPIOLIB to be in alphabetical order, but if the selects were not maintained in alphabetical order, I just replaced "select ARCH_REQUIRE_GPIOLIB" with "select GPIOLIB". Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Cc: Michael Büsch <m@bues.ch> Link: http://lkml.kernel.org/r/1464870018-8281-1-git-send-email-linus.walleij@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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Borislav Petkov
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f5967101e9 |
x86/hweight: Get rid of the special calling convention
People complained about ARCH_HWEIGHT_CFLAGS and how it throws a wrench
into kcov, lto, etc, experimentations.
Add asm versions for __sw_hweight{32,64}() and do explicit saving and
restoring of clobbered registers. This gets rid of the special calling
convention. We get to call those functions on !X86_FEATURE_POPCNT CPUs.
We still need to hardcode POPCNT and register operands as some old gas
versions which we support, do not know about POPCNT.
Btw, remove redundant REX prefix from 32-bit POPCNT because alternatives
can do padding now.
Suggested-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
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/1464605787-20603-1-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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