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Signed-off-by: Rich Felker <dalias@libc.org>
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Correct bitoff in big endian OS.
Current code works correctly for 1 byte but not for 2 bytes.
Fixes: 3226aad81aa6 ("sh: support 1 and 2 byte xchg")
Signed-off-by: Pan Xinhui <xinhui.pan@linux.vnet.ibm.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rich Felker <dalias@libc.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode updates from Thomas Gleixner:
- more work to make the microcode loader robust
- a fix for the micro code load precedence
- fixes for initrd loading with randomized memory
- less printk noise on SMP machines
* 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/asm, x86/microcode: Add __PAGE_OFFSET_BASE define on 32-bit
x86/microcode/intel: Fix initrd loading with CONFIG_RANDOMIZE_MEMORY=y
x86/microcode: Remove unused symbol exports
x86/microcode/intel: Do not issue microcode updates messages on each CPU
Documentation/microcode: Document some aspects for more clarity
x86/microcode/AMD: Make amd_ucode_patch[] static
x86/microcode/intel: Unexport save_mc_for_early()
x86/microcode/intel: Rename load_microcode_early() to find_microcode_patch()
x86/microcode: Propagate save_microcode_in_initrd() retval
x86/microcode: Get rid of find_cpio_data()'s dummy offset arg
lib/cpio: Make find_cpio_data()'s offset arg optional
x86/microcode: Fix suspend to RAM with builtin microcode
x86/microcode: Fix loading precedence
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpufeature updates from Thomas Gleixner:
- a workaround for the MONITOR instruction erratum of Goldmont CPUs
- small fixes and cleanups here and there
* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu: Add workaround for MONITOR instruction erratum on Goldmont based CPUs
x86/cpu: Rename "WESTMERE2" family to "NEHALEM_G"
x86/amd_nb: Clean up init path
x86/cpufeature: Add helper macro for mask check macros
x86/cpufeature: Make sure DISABLED/REQUIRED macros are updated
x86/cpufeature: Update cpufeaure macros
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree updates from Rob Herring:
- remove most of_platform_populate() calls in arch code. Now the DT
core code calls it in the default case and platforms only need to
call it if they have special needs
- use pr_fmt on all the DT core print statements
- CoreSight binding doc improvements to block name descriptions
- add dt_to_config script which can parse dts files and list
corresponding kernel config options
- fix memory leak hit with a PowerMac DT
- correct a bunch of STMicro compatible strings to use the correct
vendor prefix
- fix DA9052 PMIC binding doc to match what is actually used in dts
files
* tag 'devicetree-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (35 commits)
documentation: da9052: Update regulator bindings names to match DA9052/53 DTS expectations
xtensa: Partially Revert "xtensa: Remove unnecessary of_platform_populate with default match table"
xtensa: Fix build error due to missing include file
MIPS: ath79: Add missing include file
Fix spelling errors in Documentation/devicetree
ARM: dts: fix STMicroelectronics compatible strings
powerpc/dts: fix STMicroelectronics compatible strings
Documentation: dt: i2c: use correct STMicroelectronics vendor prefix
scripts/dtc: dt_to_config - kernel config options for a devicetree
of: fdt: mark unflattened tree as detached
of: overlay: add resolver error prints
coresight: document binding acronyms
Documentation/devicetree: document cavium-pip rx-delay/tx-delay properties
of: use pr_fmt prefix for all console printing
of/irq: Mark initialised interrupt controllers as populated
of: fix memory leak related to safe_name()
Revert "of/platform: export of_default_bus_match_table"
of: unittest: use of_platform_default_populate() to populate default bus
memory: omap-gpmc: use of_platform_default_populate() to populate default bus
bus: uniphier-system-bus: use of_platform_default_populate() to populate default bus
...
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Michael Turquette:
"The bulk of the changes are updates and fixes to existing clk provider
drivers, along with a pretty standard number of new drivers. The core
recieved a small number of updates as well.
Core changes of note:
- removed CLK_IS_ROOT flag
New clk provider drivers:
- Renesas r8a7796 clock pulse generator / module standby and
software reset
- Allwinner sun8i H3 clock controller unit
- AmLogic meson8b clock controller (rewritten)
- AmLogic gxbb clock controller
- support for some new ICs was added by simple changes to static
data tables for chips sharing the same family
Driver updates of note:
- the Allwinner sunxi clock driver infrastucture was rewritten to
comform to the state of the art at drivers/clk/sunxi-ng. The old
implementation is still supported for backwards compatibility with
the DT ABI"
* tag 'clk-for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (162 commits)
clk: Makefile: re-sort and clean up
Revert "clk: gxbb: expose CLKID_MMC_PCLK"
clk: samsung: Allow modular build of the Audio Subsystem CLKCON driver
clk: samsung: make clk-s5pv210-audss explicitly non-modular
clk: exynos5433: remove CLK_IGNORE_UNUSED flag from SPI clocks
clk: oxnas: Add hardware dependencies
clk: imx7d: do not set parent of ethernet time/ref clocks
ARM: dt: sun8i: switch the H3 to the new CCU driver
clk: sunxi-ng: h3: Fix Kconfig symbol typo
clk: sunxi-ng: h3: Fix audio clock divider offset
clk: sunxi-ng: Add H3 clocks
clk: sunxi-ng: Add N-K-M-P factor clock
clk: sunxi-ng: Add N-K-M Factor clock
clk: sunxi-ng: Add N-M-factor clock support
clk: sunxi-ng: Add N-K-factor clock support
clk: sunxi-ng: Add M-P factor clock support
clk: sunxi-ng: Add divider
clk: sunxi-ng: Add phase clock support
clk: sunxi-ng: Add mux clock support
clk: sunxi-ng: Add gate clock support
...
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Pull audit updates from Paul Moore:
"Six audit patches for 4.8.
There are a couple of style and minor whitespace tweaks for the logs,
as well as a minor fixup to catch errors on user filter rules, however
the major improvements are a fix to the s390 syscall argument masking
code (reviewed by the nice s390 folks), some consolidation around the
exclude filtering (less code, always a win), and a double-fetch fix
for recording the execve arguments"
* 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit:
audit: fix a double fetch in audit_log_single_execve_arg()
audit: fix whitespace in CWD record
audit: add fields to exclude filter by reusing user filter
s390: ensure that syscall arguments are properly masked on s390
audit: fix some horrible switch statement style crimes
audit: fixup: log on errors from filter user rules
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem updates from James Morris:
"Highlights:
- TPM core and driver updates/fixes
- IPv6 security labeling (CALIPSO)
- Lots of Apparmor fixes
- Seccomp: remove 2-phase API, close hole where ptrace can change
syscall #"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (156 commits)
apparmor: fix SECURITY_APPARMOR_HASH_DEFAULT parameter handling
tpm: Add TPM 2.0 support to the Nuvoton i2c driver (NPCT6xx family)
tpm: Factor out common startup code
tpm: use devm_add_action_or_reset
tpm2_i2c_nuvoton: add irq validity check
tpm: read burstcount from TPM_STS in one 32-bit transaction
tpm: fix byte-order for the value read by tpm2_get_tpm_pt
tpm_tis_core: convert max timeouts from msec to jiffies
apparmor: fix arg_size computation for when setprocattr is null terminated
apparmor: fix oops, validate buffer size in apparmor_setprocattr()
apparmor: do not expose kernel stack
apparmor: fix module parameters can be changed after policy is locked
apparmor: fix oops in profile_unpack() when policy_db is not present
apparmor: don't check for vmalloc_addr if kvzalloc() failed
apparmor: add missing id bounds check on dfa verification
apparmor: allow SYS_CAP_RESOURCE to be sufficient to prlimit another task
apparmor: use list_next_entry instead of list_entry_next
apparmor: fix refcount race when finding a child profile
apparmor: fix ref count leak when profile sha1 hash is read
apparmor: check that xindex is in trans_table bounds
...
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"Fix a nasty (and really hard to debug) memory corruption during resume
from hibernation on x86-64 (that leads to a kernel panic most of the
time) due to the use of a stale stack pointer value in FRAME_BEGIN
(Josh Poimboeuf)"
* tag 'pm-urgent-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
x86/power/64: Fix hibernation return address corruption
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull smp hotplug updates from Thomas Gleixner:
"This is the next part of the hotplug rework.
- Convert all notifiers with a priority assigned
- Convert all CPU_STARTING/DYING notifiers
The final removal of the STARTING/DYING infrastructure will happen
when the merge window closes.
Another 700 hundred line of unpenetrable maze gone :)"
* 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (70 commits)
timers/core: Correct callback order during CPU hot plug
leds/trigger/cpu: Move from CPU_STARTING to ONLINE level
powerpc/numa: Convert to hotplug state machine
arm/perf: Fix hotplug state machine conversion
irqchip/armada: Avoid unused function warnings
ARC/time: Convert to hotplug state machine
clocksource/atlas7: Convert to hotplug state machine
clocksource/armada-370-xp: Convert to hotplug state machine
clocksource/exynos_mct: Convert to hotplug state machine
clocksource/arm_global_timer: Convert to hotplug state machine
rcu: Convert rcutree to hotplug state machine
KVM/arm/arm64/vgic-new: Convert to hotplug state machine
smp/cfd: Convert core to hotplug state machine
x86/x2apic: Convert to CPU hotplug state machine
profile: Convert to hotplug state machine
timers/core: Convert to hotplug state machine
hrtimer: Convert to hotplug state machine
x86/tboot: Convert to hotplug state machine
arm64/armv8 deprecated: Convert to hotplug state machine
hwtracing/coresight-etm4x: Convert to hotplug state machine
...
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Pull sparc updates from David Miller:
1) Double spin lock bug in sunhv serial driver, from Dan Carpenter.
2) Use correct RSS estimate when determining whether to grow the huge
TSB or not, from Mike Kravetz.
3) Don't use full three level page tables for hugepages, PMD level is
sufficient. From Nitin Gupta.
4) Mask out extraneous bits from TSB_TAG_ACCESS register, we only want
the address bits.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc64: Trim page tables for 8M hugepages
sparc64 mm: Fix base TSB sizing when hugetlb pages are used
sparc: serial: sunhv: fix a double lock bug
sparc32: off by ones in BUG_ON()
sparc: Don't leak context bits into thread->fault_address
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git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC updates from Vineet Gupta:
"Things have been calm here - nothing much except for a few fixes"
* tag 'arc-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: mm: don't loose PTE_SPECIAL in pte_modify()
ARC: dma: fix address translation in arc_dma_free
ARC: typo fix in mm/ioremap.c
ARC: fix linux-next build breakage
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* pm-sleep:
x86/power/64: Fix hibernation return address corruption
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git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32
Pull AVR32 updates from Hans-Christian Noren Egtvedt.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32:
avr32: off by one in at32_init_pio()
avr32: fixup code style in unistd.h and syscall_table.S
avr32: wire up preadv2 and pwritev2 syscalls
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Pull ARM updates from Russell King:
"Included in this update are:
- Patches from Gregory Clement to fix the coherent DMA cases in our
dma-mapping code.
- A number of CPU errata updates and fixes.
- ARM cpuidle improvements from Jisheng Zhang.
- Fix from Kees for the location of _etext.
- Cleanups from Masahiro Yamada to avoid duplicated messages during
the kernel build, and remove CONFIG_ARCH_HAS_BARRIERS.
- Remove a udelay loop limitation, allowing for faster CPUs to
calibrate the delay correctly.
- Cleanup some left-overs from the SW PAN implementation.
- Ensure that a modified address limit is not visible to exception
handlers"
* 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (21 commits)
ARM: 8586/1: cpuidle: make arm_cpuidle_suspend() a bit more efficient
ARM: 8585/1: cpuidle: fix !cpuidle_ops[cpu].init case during init
ARM: 8561/4: dma-mapping: Fix the coherent case when iommu is used
ARM: 8561/3: dma-mapping: Don't use outer_flush_range when the L2C is coherent
ARM: 8560/1: errata: Workaround errata A12 825619 / A17 852421
ARM: 8559/1: errata: Workaround erratum A12 821420
ARM: 8558/1: errata: Workaround errata A12 818325/852422 A17 852423
ARM: save and reset the address limit when entering an exception
ARM: 8577/1: Fix Cortex-A15 798181 errata initialization
ARM: 8584/1: floppy: avoid gcc-6 warning
ARM: 8583/1: mm: fix location of _etext
ARM: 8582/1: remove unused CONFIG_ARCH_HAS_BARRIERS
ARM: 8306/1: loop_udelay: remove bogomips value limitation
ARM: 8581/1: add missing <asm/prom.h> to arch/arm/kernel/devtree.c
ARM: 8576/1: avoid duplicating "Kernel: arch/arm/boot/*Image is ready"
ARM: 8556/1: on a generic DT system: do not touch l2x0
ARM: uaccess: remove put_user() code duplication
ARM: 8580/1: Remove orphaned __addr_ok() definition
ARM: get rid of horrible *(unsigned int *)(regs + 1)
ARM: introduce svc_pt_regs structure
...
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For PMD aligned (8M) hugepages, we currently allocate
all four page table levels which is wasteful. We now
allocate till PMD level only which saves memory usage
from page tables.
Also, when freeing page table for 8M hugepage backed region,
make sure we don't try to access non-existent PTE level.
Orabug: 22630259
Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In kernel bug 150021, a kernel panic was reported when restoring a
hibernate image. Only a picture of the oops was reported, so I can't
paste the whole thing here. But here are the most interesting parts:
kernel tried to execute NX-protected page - exploit attempt? (uid: 0)
BUG: unable to handle kernel paging request at ffff8804615cfd78
...
RIP: ffff8804615cfd78
RSP: ffff8804615f0000
RBP: ffff8804615cfdc0
...
Call Trace:
do_signal+0x23
exit_to_usermode_loop+0x64
...
The RIP is on the same page as RBP, so it apparently started executing
on the stack.
The bug was bisected to commit ef0f3ed5a4ac (x86/asm/power: Create
stack frames in hibernate_asm_64.S), which in retrospect seems quite
dangerous, since that code saves and restores the stack pointer from a
global variable ('saved_context').
There are a lot of moving parts in the hibernate save and restore paths,
so I don't know exactly what caused the panic. Presumably, a FRAME_END
was executed without the corresponding FRAME_BEGIN, or vice versa. That
would corrupt the return address on the stack and would be consistent
with the details of the above panic.
[ rjw: One major problem is that by the time the FRAME_BEGIN in
restore_registers() is executed, the stack pointer value may not
be valid any more. Namely, the stack area pointed to by it
previously may have been overwritten by some image memory contents
and that page frame may now be used for whatever different purpose
it had been allocated for before hibernation. In that case, the
FRAME_BEGIN will corrupt that memory. ]
Instead of doing the frame pointer save/restore around the bounds of the
affected functions, just do it around the call to swsusp_save().
That has the same effect of ensuring that if swsusp_save() sleeps, the
frame pointers will be correct. It's also a much more obviously safe
way to do it than the original patch. And objtool still doesn't report
any warnings.
Fixes: ef0f3ed5a4ac (x86/asm/power: Create stack frames in hibernate_asm_64.S)
Link: https://bugzilla.kernel.org/show_bug.cgi?id=150021
Cc: 4.6+ <stable@vger.kernel.org> # 4.6+
Reported-by: Andre Reinke <andre.reinke@mailbox.org>
Tested-by: Andre Reinke <andre.reinke@mailbox.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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The pio_dev[] array has MAX_NR_PIO_DEVICES elements so the > should be
>=.
Fixes: 5f97f7f9400d ('[PATCH] avr32 architecture')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
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This patch swaps the mix of tabs and space for alignment of comment
after code to use spaces only.
Also document why recvmmsg was defined twice in the syscall_table.S
table, but only once in unistd.h. In short, wired in the table by
generic arch patch, but forgotten in unistd.h (review slip).
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This patch wires up the new preadv2 and pwritev2 syscall on AVR32.
On AVR32, all parameters beyond the 5th are passed on the stack. System
calls don't use the stack -- they borrow a callee-saved register
instead. This means that syscalls that take 6 parameters must be called
through a stub that pushes the last parameter on the stack.
Signed-off-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
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do_sparc64_fault() calculates both the base and huge page RSS sizes and
uses this information in calls to tsb_grow(). The calculation for base
page TSB size is not correct if the task uses hugetlb pages. hugetlb
pages are not accounted for in RSS, therefore the call to get_mm_rss(mm)
does not include hugetlb pages. However, the number of pages based on
huge_pte_count (which does include hugetlb pages) is subtracted from
this value. This will result in an artificially small and often negative
RSS calculation. The base TSB size is then often set to max_tsb_size
as the passed RSS is unsigned, so a negative value looks really big.
THP pages are also accounted for in huge_pte_count, and THP pages are
accounted for in RSS so the calculation in do_sparc64_fault() is correct
if a task only uses THP pages.
A single huge_pte_count is not sufficient for TSB sizing if both hugetlb
and THP pages can be used. Instead of a single counter, use two: one
for hugetlb and one for THP.
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
- Replace pcommit with ADR / directed-flushing.
The pcommit instruction, which has not shipped on any product, is
deprecated. Instead, the requirement is that platforms implement
either ADR, or provide one or more flush addresses per nvdimm.
ADR (Asynchronous DRAM Refresh) flushes data in posted write buffers
to the memory controller on a power-fail event.
Flush addresses are defined in ACPI 6.x as an NVDIMM Firmware
Interface Table (NFIT) sub-structure: "Flush Hint Address Structure".
A flush hint is an mmio address that when written and fenced assures
that all previous posted writes targeting a given dimm have been
flushed to media.
- On-demand ARS (address range scrub).
Linux uses the results of the ACPI ARS commands to track bad blocks
in pmem devices. When latent errors are detected we re-scrub the
media to refresh the bad block list, userspace can also request a
re-scrub at any time.
- Support for the Microsoft DSM (device specific method) command
format.
- Support for EDK2/OVMF virtual disk device memory ranges.
- Various fixes and cleanups across the subsystem.
* tag 'libnvdimm-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (41 commits)
libnvdimm-btt: Delete an unnecessary check before the function call "__nd_device_register"
nfit: do an ARS scrub on hitting a latent media error
nfit: move to nfit/ sub-directory
nfit, libnvdimm: allow an ARS scrub to be triggered on demand
libnvdimm: register nvdimm_bus devices with an nd_bus driver
pmem: clarify a debug print in pmem_clear_poison
x86/insn: remove pcommit
Revert "KVM: x86: add pcommit support"
nfit, tools/testing/nvdimm/: unify shutdown paths
libnvdimm: move ->module to struct nvdimm_bus_descriptor
nfit: cleanup acpi_nfit_init calling convention
nfit: fix _FIT evaluation memory leak + use after free
tools/testing/nvdimm: add manufacturing_{date|location} dimm properties
tools/testing/nvdimm: add virtual ramdisk range
acpi, nfit: treat virtual ramdisk SPA as pmem region
pmem: kill __pmem address space
pmem: kill wmb_pmem()
libnvdimm, pmem: use nvdimm_flush() for namespace I/O writes
fs/dax: remove wmb_pmem()
libnvdimm, pmem: flush posted-write queues on shutdown
...
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Merge more updates from Andrew Morton:
"The rest of MM"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (101 commits)
mm, compaction: simplify contended compaction handling
mm, compaction: introduce direct compaction priority
mm, thp: remove __GFP_NORETRY from khugepaged and madvised allocations
mm, page_alloc: make THP-specific decisions more generic
mm, page_alloc: restructure direct compaction handling in slowpath
mm, page_alloc: don't retry initial attempt in slowpath
mm, page_alloc: set alloc_flags only once in slowpath
lib/stackdepot.c: use __GFP_NOWARN for stack allocations
mm, kasan: switch SLUB to stackdepot, enable memory quarantine for SLUB
mm, kasan: account for object redzone in SLUB's nearest_obj()
mm: fix use-after-free if memory allocation failed in vma_adjust()
zsmalloc: Delete an unnecessary check before the function call "iput"
mm/memblock.c: fix index adjustment error in __next_mem_range_rev()
mem-hotplug: alloc new page from a nearest neighbor node when mem-offline
mm: optimize copy_page_to/from_iter_iovec
mm: add cond_resched() to generic_swapfile_activate()
Revert "mm, mempool: only set __GFP_NOMEMALLOC if there are free elements"
mm, compaction: don't isolate PageWriteback pages in MIGRATE_SYNC_LIGHT mode
mm: hwpoison: remove incorrect comments
make __section_nr() more efficient
...
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When booting an ACPI enabled kernel with 'mem=x', there is the
possibility that ACPI data regions from the firmware will lie above the
memory limit. Ordinarily these will be removed by
memblock_enforce_memory_limit(.).
Unfortunately, this means that these regions will then be mapped by
acpi_os_ioremap(.) as device memory (instead of normal) thus unaligned
accessess will then provoke alignment faults.
In this patch we adopt memblock_mem_limit_remove_map instead, and this
preserves these ACPI data regions (marked NOMAP) thus ensuring that
these regions are not mapped as device memory.
For example, below is an alignment exception observed on ARM platform
when booting the kernel with 'acpi=on mem=8G':
...
Unable to handle kernel paging request at virtual address ffff0000080521e7
pgd = ffff000008aa0000
[ffff0000080521e7] *pgd=000000801fffe003, *pud=000000801fffd003, *pmd=000000801fffc003, *pte=00e80083ff1c1707
Internal error: Oops: 96000021 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.7.0-rc3-next-20160616+ #172
Hardware name: AMD Overdrive/Supercharger/Default string, BIOS ROD1001A 02/09/2016
task: ffff800001ef0000 ti: ffff800001ef8000 task.ti: ffff800001ef8000
PC is at acpi_ns_lookup+0x520/0x734
LR is at acpi_ns_lookup+0x4a4/0x734
pc : [<ffff0000083b8b10>] lr : [<ffff0000083b8a94>] pstate: 60000045
sp : ffff800001efb8b0
x29: ffff800001efb8c0 x28: 000000000000001b
x27: 0000000000000001 x26: 0000000000000000
x25: ffff800001efb9e8 x24: ffff000008a10000
x23: 0000000000000001 x22: 0000000000000001
x21: ffff000008724000 x20: 000000000000001b
x19: ffff0000080521e7 x18: 000000000000000d
x17: 00000000000038ff x16: 0000000000000002
x15: 0000000000000007 x14: 0000000000007fff
x13: ffffff0000000000 x12: 0000000000000018
x11: 000000001fffd200 x10: 00000000ffffff76
x9 : 000000000000005f x8 : ffff000008725fa8
x7 : ffff000008a8df70 x6 : ffff000008a8df70
x5 : ffff000008a8d000 x4 : 0000000000000010
x3 : 0000000000000010 x2 : 000000000000000c
x1 : 0000000000000006 x0 : 0000000000000000
...
acpi_ns_lookup+0x520/0x734
acpi_ds_load1_begin_op+0x174/0x4fc
acpi_ps_build_named_op+0xf8/0x220
acpi_ps_create_op+0x208/0x33c
acpi_ps_parse_loop+0x204/0x838
acpi_ps_parse_aml+0x1bc/0x42c
acpi_ns_one_complete_parse+0x1e8/0x22c
acpi_ns_parse_table+0x8c/0x128
acpi_ns_load_table+0xc0/0x1e8
acpi_tb_load_namespace+0xf8/0x2e8
acpi_load_tables+0x7c/0x110
acpi_init+0x90/0x2c0
do_one_initcall+0x38/0x12c
kernel_init_freeable+0x148/0x1ec
kernel_init+0x10/0xec
ret_from_fork+0x10/0x40
Code: b9009fbc 2a00037b 36380057 3219037b (b9400260)
---[ end trace 03381e5eb0a24de4 ]---
Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
With 'efi=debug', we can see those ACPI regions loaded by firmware on
that board as:
efi: 0x0083ff185000-0x0083ff1b4fff [Reserved | | | | | | | | |WB|WT|WC|UC]*
efi: 0x0083ff1b5000-0x0083ff1c2fff [ACPI Reclaim Memory| | | | | | | | |WB|WT|WC|UC]*
efi: 0x0083ff223000-0x0083ff224fff [ACPI Memory NVS | | | | | | | | |WB|WT|WC|UC]*
Link: http://lkml.kernel.org/r/1468475036-5852-3-git-send-email-dennis.chen@arm.com
Acked-by: Steve Capper <steve.capper@arm.com>
Signed-off-by: Dennis Chen <dennis.chen@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Kaly Xin <kaly.xin@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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There are now a number of accounting oddities such as mapped file pages
being accounted for on the node while the total number of file pages are
accounted on the zone. This can be coped with to some extent but it's
confusing so this patch moves the relevant file-based accounted. Due to
throttling logic in the page allocator for reliable OOM detection, it is
still necessary to track dirty and writeback pages on a per-zone basis.
[mgorman@techsingularity.net: fix NR_ZONE_WRITE_PENDING accounting]
Link: http://lkml.kernel.org/r/1468404004-5085-5-git-send-email-mgorman@techsingularity.net
Link: http://lkml.kernel.org/r/1467970510-21195-20-git-send-email-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Reclaim makes decisions based on the number of pages that are mapped but
it's mixing node and zone information. Account NR_FILE_MAPPED and
NR_ANON_PAGES pages on the node.
Link: http://lkml.kernel.org/r/1467970510-21195-18-git-send-email-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This moves the LRU lists from the zone to the node and related data such
as counters, tracing, congestion tracking and writeback tracking.
Unfortunately, due to reclaim and compaction retry logic, it is
necessary to account for the number of LRU pages on both zone and node
logic. Most reclaim logic is based on the node counters but the retry
logic uses the zone counters which do not distinguish inactive and
active sizes. It would be possible to leave the LRU counters on a
per-zone basis but it's a heavier calculation across multiple cache
lines that is much more frequent than the retry checks.
Other than the LRU counters, this is mostly a mechanical patch but note
that it introduces a number of anomalies. For example, the scans are
per-zone but using per-node counters. We also mark a node as congested
when a zone is congested. This causes weird problems that are fixed
later but is easier to review.
In the event that there is excessive overhead on 32-bit systems due to
the nodes being on LRU then there are two potential solutions
1. Long-term isolation of highmem pages when reclaim is lowmem
When pages are skipped, they are immediately added back onto the LRU
list. If lowmem reclaim persisted for long periods of time, the same
highmem pages get continually scanned. The idea would be that lowmem
keeps those pages on a separate list until a reclaim for highmem pages
arrives that splices the highmem pages back onto the LRU. It potentially
could be implemented similar to the UNEVICTABLE list.
That would reduce the skip rate with the potential corner case is that
highmem pages have to be scanned and reclaimed to free lowmem slab pages.
2. Linear scan lowmem pages if the initial LRU shrink fails
This will break LRU ordering but may be preferable and faster during
memory pressure than skipping LRU pages.
Link: http://lkml.kernel.org/r/1467970510-21195-4-git-send-email-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree updates from Jiri Kosina.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial:
fat: fix error message for bogus number of directory entries
fat: fix typo s/supeblock/superblock/
ASoC: max9877: Remove unused function declaration
dw2102: don't output spurious blank lines to the kernel log
init: fix Kconfig text
ARM: io: fix comment grammar
ocfs: fix ocfs2_xattr_user_get() argument name
scsi/qla2xxx: Remove erroneous unused macro qla82xx_get_temp_val1()
|
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LTP madvise05 was generating mm splat
| [ARCLinux]# /sd/ltp/testcases/bin/madvise05
| BUG: Bad page map in process madvise05 pte:80e08211 pmd:9f7d4000
| page:9fdcfc90 count:1 mapcount:-1 mapping: (null) index:0x0 flags: 0x404(referenced|reserved)
| page dumped because: bad pte
| addr:200b8000 vm_flags:00000070 anon_vma: (null) mapping: (null) index:1005c
| file: (null) fault: (null) mmap: (null) readpage: (null)
| CPU: 2 PID: 6707 Comm: madvise05
And for newer kernels, the system was rendered unusable afterwards.
The problem was mprotect->pte_modify() clearing PTE_SPECIAL (which is
set to identify the special zero page wired to the pte).
When pte was finally unmapped, special casing for zero page was not
done, and instead it was treated as a "normal" page, tripping on the
map counts etc.
This fixes ARC STAR 9001053308
Cc: <stable@vger.kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
|
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|
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Smatch complains that these tests are off by one, which is true but not
life threatening.
arch/sparc/kernel/irq_32.c:169 irq_link()
error: buffer overflow 'irq_map' 384 <= 384
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
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On pre-Niagara systems, we fetch the fault address on data TLB
exceptions from the TLB_TAG_ACCESS register. But this register also
contains the context ID assosciated with the fault in the low 13 bits
of the register value.
This propagates into current_thread_info()->fault_address and can
cause trouble later on.
So clear the low 13-bits out of the TLB_TAG_ACCESS value in the cases
where it matters.
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"Quite a lot of cleanup and maintainence work going on this release in
various drivers, and also a fix for a nasty locking issue in the core:
- A fix for locking issues when external drivers explicitly locked
the bus with spi_bus_lock() - we were using the same lock to both
control access to the physical bus in multi-threaded I/O operations
and exclude multiple callers.
Confusion between these two caused us to have scenarios where we
were dropping locks. These are fixed by splitting into two
separate locks like should have been done originally, making
everything much clearer and correct.
- Support for DMA in spi_flash_read().
- Support for instantiating spidev on ACPI systems, including some
test devices used in Windows validation.
- Use of the core DMA mapping functionality in the McSPI driver.
- Start of support for ThunderX SPI controllers, involving a very big
set of changes to the Cavium driver.
- Support for Braswell, Exynos 5433, Kaby Lake, Merrifield, RK3036,
RK3228, RK3368 controllers"
* tag 'spi-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (64 commits)
spi: Split bus and I/O locking
spi: octeon: Split driver into Octeon specific and common parts
spi: octeon: Move include file from arch/mips to drivers/spi
spi: octeon: Put register offsets into a struct
spi: octeon: Store system clock freqency in struct octeon_spi
spi: octeon: Convert driver to use readq()/writeq() functions
spi: pic32-sqi: fixup wait_for_completion_timeout return handling
spi: pic32: fixup wait_for_completion_timeout return handling
spi: rockchip: limit transfers to (64K - 1) bytes
spi: xilinx: Return IRQ_NONE if no interrupts were detected
spi: xilinx: Handle errors from platform_get_irq()
spi: s3c64xx: restore removed comments
spi: s3c64xx: add Exynos5433 compatible for ioclk handling
spi: s3c64xx: use error code from clk_prepare_enable()
spi: s3c64xx: rename goto labels to meaningful names
spi: s3c64xx: document the clocks and the clock-name property
spi: s3c64xx: add exynos5433 spi compatible
spi: s3c64xx: fix reference leak to master in s3c64xx_spi_remove()
spi: spi-sh: Remove deprecated create_singlethread_workqueue
spi: spi-topcliff-pch: Remove deprecated create_singlethread_workqueue
...
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git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Pull LED updates from Jacek Anaszewski:
"New LED class driver:
- LED driver for TI LP3952 6-Channel Color LED
LED core improvements:
- Only descend into leds directory when CONFIG_NEW_LEDS is set
- Add no-op gpio_led_register_device when LED subsystem is disabled
- MAINTAINERS: Add file patterns for led device tree bindings
LED Trigger core improvements:
- return error if invalid trigger name is provided via sysfs
LED class drivers improvements
- is31fl32xx: define complete i2c_device_id table
- is31fl32xx: fix typo in id and match table names
- leds-gpio: Set of_node for created LED devices
- pca9532: Add device tree support
Conversion of IDE trigger to common disk trigger:
- leds: convert IDE trigger to common disk trigger
- leds: documentation: 'ide-disk' to 'disk-activity'
- unicore32: use the new LED disk activity trigger
- parisc: use the new LED disk activity trigger
- mips: use the new LED disk activity trigger
- arm: use the new LED disk activity trigger
- powerpc: use the new LED disk activity trigger"
* tag 'leds_for_4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
leds: is31fl32xx: define complete i2c_device_id table
leds: is31fl32xx: fix typo in id and match table names
leds: LED driver for TI LP3952 6-Channel Color LED
leds: leds-gpio: Set of_node for created LED devices
leds: triggers: return error if invalid trigger name is provided via sysfs
leds: Only descend into leds directory when CONFIG_NEW_LEDS is set
leds: Add no-op gpio_led_register_device when LED subsystem is disabled
unicore32: use the new LED disk activity trigger
parisc: use the new LED disk activity trigger
mips: use the new LED disk activity trigger
arm: use the new LED disk activity trigger
powerpc: use the new LED disk activity trigger
leds: documentation: 'ide-disk' to 'disk-activity'
leds: convert IDE trigger to common disk trigger
leds: pca9532: Add device tree support
MAINTAINERS: Add file patterns for led device tree bindings
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Pull EDAC updates from Borislav Petkov:
"This last cycle, Thor was busy adding Arria10 eth FIFO support to the
altera_edac driver along with other improvements. We have two
cleanups/fixes too.
Summary:
- Altera Arria10 ethernet FIFO buffer support (Thor Thayer)
- Minor cleanups"
* tag 'edac_for_4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
ARM: dts: Add Arria10 Ethernet EDAC devicetree entry
EDAC, altera: Add Arria10 Ethernet EDAC support
EDAC, altera: Add Arria10 ECC memory init functions
Documentation: dt: socfpga: Add Arria10 Ethernet binding
EDAC, altera: Drop some ifdeffery
EDAC, altera: Add panic flag check to A10 IRQ
EDAC, altera: Check parent status for Arria10 EDAC block
EDAC, altera: Make all private data structures static
EDAC: Correct channel count limit
EDAC, amd64_edac: Init opstate at the proper time during init
EDAC, altera: Handle Arria10 SDRAM child node
EDAC, altera: Add ECC Manager IRQ controller support
Documentation: dt: socfpga: Add interrupt-controller to ecc-manager
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Several build configurations had already disabled this warning because
it generates a lot of false positives. But some had not, and it was
still enabled for "allmodconfig" builds, for example.
Looking at the warnings produced, every single one I looked at was a
false positive, and the warnings are frequent enough (and big enough)
that they can easily hide real problems that you don't notice in the
noise generated by -Wmaybe-uninitialized.
The warning is good in theory, but this is a classic case of a warning
that causes more problems than the warning can solve.
If gcc gets better at avoiding false positives, we may be able to
re-enable this warning. But as is, we're better off without it, and I
want to be able to see the *real* warnings.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
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Pull networking updates from David Miller:
1) Unified UDP encapsulation offload methods for drivers, from
Alexander Duyck.
2) Make DSA binding more sane, from Andrew Lunn.
3) Support QCA9888 chips in ath10k, from Anilkumar Kolli.
4) Several workqueue usage cleanups, from Bhaktipriya Shridhar.
5) Add XDP (eXpress Data Path), essentially running BPF programs on RX
packets as soon as the device sees them, with the option to mirror
the packet on TX via the same interface. From Brenden Blanco and
others.
6) Allow qdisc/class stats dumps to run lockless, from Eric Dumazet.
7) Add VLAN support to b53 and bcm_sf2, from Florian Fainelli.
8) Simplify netlink conntrack entry layout, from Florian Westphal.
9) Add ipv4 forwarding support to mlxsw spectrum driver, from Ido
Schimmel, Yotam Gigi, and Jiri Pirko.
10) Add SKB array infrastructure and convert tun and macvtap over to it.
From Michael S Tsirkin and Jason Wang.
11) Support qdisc packet injection in pktgen, from John Fastabend.
12) Add neighbour monitoring framework to TIPC, from Jon Paul Maloy.
13) Add NV congestion control support to TCP, from Lawrence Brakmo.
14) Add GSO support to SCTP, from Marcelo Ricardo Leitner.
15) Allow GRO and RPS to function on macsec devices, from Paolo Abeni.
16) Support MPLS over IPV4, from Simon Horman.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1622 commits)
xgene: Fix build warning with ACPI disabled.
be2net: perform temperature query in adapter regardless of its interface state
l2tp: Correctly return -EBADF from pppol2tp_getname.
net/mlx5_core/health: Remove deprecated create_singlethread_workqueue
net: ipmr/ip6mr: update lastuse on entry change
macsec: ensure rx_sa is set when validation is disabled
tipc: dump monitor attributes
tipc: add a function to get the bearer name
tipc: get monitor threshold for the cluster
tipc: make cluster size threshold for monitoring configurable
tipc: introduce constants for tipc address validation
net: neigh: disallow transition to NUD_STALE if lladdr is unchanged in neigh_update()
MAINTAINERS: xgene: Add driver and documentation path
Documentation: dtb: xgene: Add MDIO node
dtb: xgene: Add MDIO node
drivers: net: xgene: ethtool: Use phy_ethtool_gset and sset
drivers: net: xgene: Use exported functions
drivers: net: xgene: Enable MDIO driver
drivers: net: xgene: Add backward compatibility
drivers: net: phy: xgene: Add MDIO driver
...
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from David Vrabel:
"Features and fixes for 4.8-rc0:
- ACPI support for guests on ARM platforms.
- Generic steal time support for arm and x86.
- Support cases where kernel cpu is not Xen VCPU number (e.g., if
in-guest kexec is used).
- Use the system workqueue instead of a custom workqueue in various
places"
* tag 'for-linus-4.8-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (47 commits)
xen: add static initialization of steal_clock op to xen_time_ops
xen/pvhvm: run xen_vcpu_setup() for the boot CPU
xen/evtchn: use xen_vcpu_id mapping
xen/events: fifo: use xen_vcpu_id mapping
xen/events: use xen_vcpu_id mapping in events_base
x86/xen: use xen_vcpu_id mapping when pointing vcpu_info to shared_info
x86/xen: use xen_vcpu_id mapping for HYPERVISOR_vcpu_op
xen: introduce xen_vcpu_id mapping
x86/acpi: store ACPI ids from MADT for future usage
x86/xen: update cpuid.h from Xen-4.7
xen/evtchn: add IOCTL_EVTCHN_RESTRICT
xen-blkback: really don't leak mode property
xen-blkback: constify instance of "struct attribute_group"
xen-blkfront: prefer xenbus_scanf() over xenbus_gather()
xen-blkback: prefer xenbus_scanf() over xenbus_gather()
xen: support runqueue steal time on xen
arm/xen: add support for vm_assist hypercall
xen: update xen headers
xen-pciback: drop superfluous variables
xen-pciback: short-circuit read path used for merging write values
...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
- Kexec support for arm64
- Kprobes support
- Expose MIDR_EL1 and REVIDR_EL1 CPU identification registers to sysfs
- Trapping of user space cache maintenance operations and emulation in
the kernel (CPU errata workaround)
- Clean-up of the early page tables creation (kernel linear mapping,
EFI run-time maps) to avoid splitting larger blocks (e.g. pmds) into
smaller ones (e.g. ptes)
- VDSO support for CLOCK_MONOTONIC_RAW in clock_gettime()
- ARCH_HAS_KCOV enabled for arm64
- Optimise IP checksum helpers
- SWIOTLB optimisation to only allocate/initialise the buffer if the
available RAM is beyond the 32-bit mask
- Properly handle the "nosmp" command line argument
- Fix for the initialisation of the CPU debug state during early boot
- vdso-offsets.h build dependency workaround
- Build fix when RANDOMIZE_BASE is enabled with MODULES off
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (64 commits)
arm64: arm: Fix-up the removal of the arm64 regs_query_register_name() prototype
arm64: Only select ARM64_MODULE_PLTS if MODULES=y
arm64: mm: run pgtable_page_ctor() on non-swapper translation table pages
arm64: mm: make create_mapping_late() non-allocating
arm64: Honor nosmp kernel command line option
arm64: Fix incorrect per-cpu usage for boot CPU
arm64: kprobes: Add KASAN instrumentation around stack accesses
arm64: kprobes: Cleanup jprobe_return
arm64: kprobes: Fix overflow when saving stack
arm64: kprobes: WARN if attempting to step with PSTATE.D=1
arm64: debug: remove unused local_dbg_{enable, disable} macros
arm64: debug: remove redundant spsr manipulation
arm64: debug: unmask PSTATE.D earlier
arm64: localise Image objcopy flags
arm64: ptrace: remove extra define for CPSR's E bit
kprobes: Add arm64 case in kprobe example module
arm64: Add kernel return probes support (kretprobes)
arm64: Add trampoline code for kretprobes
arm64: kprobes instruction simulation support
arm64: Treat all entry code as non-kprobe-able
...
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Pull tile architecture updates from Chris Metcalf:
"A few stray changes"
* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
tile: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO
tile: support gcc 7 optimization to use __multi3
tile 32-bit big-endian: fix bugs in syscall argument order
tile: allow disabling CONFIG_EARLY_PRINTK
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... in order to avoid #ifdeffery in code computing the ASLR randomization
offset. Remove that #ifdeffery in the microcode loader.
Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nicolai Stange <nicstange@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Garnier <thgarnie@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20160727120939.GA18911@nazgul.tnic
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Signed-off-by: Ingo Molnar <mingo@kernel.org>
|
