Commit 7ff9554bb5 ("printk: convert byte-buffer to variable-length
record buffer") introduced a record based printk buffer. Modify
gdbmacros.txt to parse this new structure so dmesg will work properly.
Link: http://lkml.kernel.org/r/1463515794-1599-1-git-send-email-minyard@acm.org
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When remapping pages accounting for 4G or more memory space, the
operation 'count << PAGE_SHIFT' overflows as it is performed on an
integer. Solution: cast before doing the bitshift.
[akpm@linux-foundation.org: fix vm_unmap_ram() also]
[akpm@linux-foundation.org: fix vmap() as well, per Guillermo]
Link: http://lkml.kernel.org/r/etPan.57175fb3.7a271c6b.2bd@naudit.es
Signed-off-by: Guillermo Julián Moreno <guillermo.julian@naudit.es>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull ARM fix from Russell King:
"Just one fix to the ptrace code, spotted by Simon Marchi, where if a
thread migrates to a different CPU and the VFP registers are changed
through ptrace, the application doesn't see the updated VFP registers"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: fix PTRACE_SETVFPREGS on SMP systems
- Revert a previous revert and get hugetlb going with contiguous hints
- Wire up missing compat syscalls
- Enable CONFIG_SET_MODULE_RONX by default
- Add missing line to our compat /proc/cpuinfo output
- Clarify levels in our page table dumps
- Fix booting with RANDOMIZE_TEXT_OFFSET enabled
- Misc fixes to the ARM CPU PMU driver (refcounting, probe failure)
- Remove some dead code and update a comment
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"The main thing here is reviving hugetlb support using contiguous ptes,
which we ended up reverting at the last minute in 4.5 pending a fix
which went into the core mm/ code during the recent merge window.
- Revert a previous revert and get hugetlb going with contiguous hints
- Wire up missing compat syscalls
- Enable CONFIG_SET_MODULE_RONX by default
- Add missing line to our compat /proc/cpuinfo output
- Clarify levels in our page table dumps
- Fix booting with RANDOMIZE_TEXT_OFFSET enabled
- Misc fixes to the ARM CPU PMU driver (refcounting, probe failure)
- Remove some dead code and update a comment"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: fix alignment when RANDOMIZE_TEXT_OFFSET is enabled
arm64: move {PAGE,CONT}_SHIFT into Kconfig
arm64: mm: dump: log span level
arm64: update stale PAGE_OFFSET comment
drivers/perf: arm_pmu: Avoid leaking pmu->irq_affinity on error
drivers/perf: arm_pmu: Defer the setting of __oprofile_cpu_pmu
drivers/perf: arm_pmu: Fix reference count of a device_node in of_pmu_irq_cfg
arm64: report CPU number in bad_mode
arm64: unistd32.h: wire up missing syscalls for compat tasks
arm64: Provide "model name" in /proc/cpuinfo for PER_LINUX32 tasks
arm64: enable CONFIG_SET_MODULE_RONX by default
arm64: Remove orphaned __addr_ok() definition
Revert "arm64: hugetlb: partial revert of 66b3923a1a"
- Handle RTAS delay requests in configure_bridge from Russell Currey
- Refactor the configure_bridge RTAS tokens from Russell Currey
- Fix definition of SIAR and SDAR registers from Thomas Huth
- Use privileged SPR number for MMCR2 from Thomas Huth
- Update LPCR only if it is powernv from Aneesh Kumar K.V
- Fix the reference bit update when handling hash fault from Aneesh Kumar K.V
- Add missing tlb flush from Aneesh Kumar K.V
- Add POWER8NVL support to ibm,client-architecture-support call from Thomas Huth
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Merge tag 'powerpc-4.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Handle RTAS delay requests in configure_bridge from Russell Currey
- Refactor the configure_bridge RTAS tokens from Russell Currey
- Fix definition of SIAR and SDAR registers from Thomas Huth
- Use privileged SPR number for MMCR2 from Thomas Huth
- Update LPCR only if it is powernv from Aneesh Kumar K.V
- Fix the reference bit update when handling hash fault from Aneesh
Kumar K.V
- Add missing tlb flush from Aneesh Kumar K.V
- Add POWER8NVL support to ibm,client-architecture-support call from
Thomas Huth
* tag 'powerpc-4.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/pseries: Add POWER8NVL support to ibm,client-architecture-support call
powerpc/mm/radix: Add missing tlb flush
powerpc/mm/hash: Fix the reference bit update when handling hash fault
powerpc/mm/radix: Update LPCR only if it is powernv
powerpc: Use privileged SPR number for MMCR2
powerpc: Fix definition of SIAR and SDAR registers
powerpc/pseries/eeh: Refactor the configure_bridge RTAS tokens
powerpc/pseries/eeh: Handle RTAS delay requests in configure_bridge
When dealing with inline extents, btrfs_get_extent will incorrectly try
to insert a duplicate extent_map. The dup hits -EEXIST from
add_extent_map, but then we try to merge with the existing one and end
up trying to insert a zero length extent_map.
This actually works most of the time, except when there are extent maps
past the end of the inline extent. rocksdb will trigger this sometimes
because it preallocates an extent and then truncates down.
Josef made a script to trigger with xfs_io:
#!/bin/bash
xfs_io -f -c "pwrite 0 1000" inline
xfs_io -c "falloc -k 4k 1M" inline
xfs_io -c "pread 0 1000" -c "fadvise -d 0 1000" -c "pread 0 1000" inline
xfs_io -c "fadvise -d 0 1000" inline
cat inline
You'll get EIOs trying to read inline after this because add_extent_map
is returning EEXIST
Signed-off-by: Chris Mason <clm@fb.com>
This is the same issue fixed in commit dcf5341f01 ("ARM: dts:
sun8i-q8-common: Do not set constraints on dc1sw regulator").
Commit message copied:
dc1sw is an on/off only regulator and as such it cannot have constraints.
This is a limitation of the kernel regulator implementation which resolves
supplies on the first regulator_get(), which is done after applying
constraints, and applying the constrains will fail because it calls
_regulator_get_voltage() and _regulator_do_set_voltage() both of which
will fail on a switch regulator when there is no supply (yet).
This causes registering of all axp22x regulators to fail with the
following errors:
[ 1.395249] vcc-lcd: failed to get the current voltage(-22)
[ 1.405131] axp20x-regulator axp20x-regulator: Failed to register dc1sw
[ 1.412436] axp20x-regulator: probe of axp20x-regulator failed with error -22
This commit removes the constrains on dc1sw / vcc-lcd fixing this problem.
Note that dcdc1 itself is contrained to the exact same values, so this
does not change anything.
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Cc: <stable@vger.kernel.org> # 4.6
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
This is the same issue fixed in commit dcf5341f01 ("ARM: dts:
sun8i-q8-common: Do not set constraints on dc1sw regulator").
Commit message copied:
dc1sw is an on/off only regulator and as such it cannot have constraints.
This is a limitation of the kernel regulator implementation which resolves
supplies on the first regulator_get(), which is done after applying
constraints, and applying the constrains will fail because it calls
_regulator_get_voltage() and _regulator_do_set_voltage() both of which
will fail on a switch regulator when there is no supply (yet).
This causes registering of all axp22x regulators to fail with the
following errors:
[ 1.395249] vcc-lcd: failed to get the current voltage(-22)
[ 1.405131] axp20x-regulator axp20x-regulator: Failed to register dc1sw
[ 1.412436] axp20x-regulator: probe of axp20x-regulator failed with error -22
This commit removes the constrains on dc1sw / vcc-lcd fixing this problem.
Note that dcdc1 itself is contrained to the exact same values, so this
does not change anything.
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Cc: <stable@vger.kernel.org> # 4.6
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
with patches in Linux next:
- Fix omap5 and am57xx-idk input voltages to fix micro-sd
probing at least for some omap5-uevm configurations
- Fix unhandled fault for igepv5 audio
- Fix UART wakeirqs for omap5 by removing WAKUP_EN flags,
those are managed by the wakeirq and can currently confuse
the wakeirqs as there is no handler necessarily registered
- Fix LDO7 source for igepv5
Also included are few minor changes not strictly fixes
are good to have merged:
- Fix HP T410 boot time warnings for eMMC and disable the
unused MMC interfaces while at it
- Add dra7 gpmc dma channel
- Add igep00x0 SD card detect and write protect GPIOs
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Merge tag 'omap-for-v4.7-dts-fixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
DTS fixes for omaps for v4.7 merge window for issues noted
with patches in Linux next:
- Fix omap5 and am57xx-idk input voltages to fix micro-sd
probing at least for some omap5-uevm configurations
- Fix unhandled fault for igepv5 audio
- Fix UART wakeirqs for omap5 by removing WAKUP_EN flags,
those are managed by the wakeirq and can currently confuse
the wakeirqs as there is no handler necessarily registered
- Fix LDO7 source for igepv5
Also included are few minor changes not strictly fixes
are good to have merged:
- Fix HP T410 boot time warnings for eMMC and disable the
unused MMC interfaces while at it
- Add dra7 gpmc dma channel
- Add igep00x0 SD card detect and write protect GPIOs
* tag 'omap-for-v4.7-dts-fixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: igep0020: Add SD card write-protect pin.
ARM: dts: igep00x0: Add SD card-detect.
ARM: dts: am57xx-idk-common: Fix input supply names
ARM: dts: dra7: Add gpmc dma channel
ARM: dts: disable mmc by default and enable when needed for dm814x
ARM: dts: Add non-removable to hsmmc on hp-t410
ARM: dts: Fix ldo7 source for HDMI on igepv5
ARM: dts: Fix uart wakeirq on omap5 by removing WAKEUP_EN for omaps
ARM: dts: Fix igepv5 audiopwon-gpio
ARM: dts: omap5-board-common: Describe the voltage supply mapping accurately
Signed-off-by: Olof Johansson <olof@lixom.net>
ARM errata for am437x, and the other to add ARM errtum
workaround for dra7.
AFAIK these both can wait for v4.7, we can then request them
for stable kernels as needed.
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Merge tag 'omap-for-v4.7/fixes-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Two fixes for omaps for v4.7 merge window, one to enable
ARM errata for am437x, and the other to add ARM errtum
workaround for dra7.
AFAIK these both can wait for v4.7, we can then request them
for stable kernels as needed.
* tag 'omap-for-v4.7/fixes-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: AM43XX: Enable fixes for Cortex-A9 errata
ARM: OMAP5 / DRA7: Introduce workaround for 801819
Signed-off-by: Olof Johansson <olof@lixom.net>
commit 27dd9af6bc ("ARM: dts: sunxi: Add a olinuxino-lime2-emmc")
added the new emmc equipped lime2 but forgot its Makefile.
This patch adds an entry to the Makefile.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
1. Fix samsung-keypad build error if INPUT is selected as module.
The error though depends on some uncommon build settings so it
is not as easy to trigger.
2. Get rid of 'samsung_device_dma_mask' defined but not used warning.
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Merge tag 'samsung-fixes-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into fixes
Two fixes for v4.7 cycle for build issues:
1. Fix samsung-keypad build error if INPUT is selected as module.
The error though depends on some uncommon build settings so it
is not as easy to trigger.
2. Get rid of 'samsung_device_dma_mask' defined but not used warning.
* tag 'samsung-fixes-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
ARM: exynos: don't select keyboard driver
ARM: samsung: improve static dma_mask definition
Signed-off-by: Olof Johansson <olof@lixom.net>
Tree-wide replacement was done by commit 2ef7d5f342 (ARM, ARM64:
dts: drop "arm,amba-bus" in favor of "simple-bus"), but we have some
new users of "arm,amba-bus" at Linux 4.7-rc1. Eliminate them now.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Chanho Min <chanho.min@lge.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
In commit
2c1ea4c700 ("EDAC, sb_edac: Use cpu family/model in driver detection")
we switched from using PCI ids to determine which platform we are
running on to using CPU model instead.
I forgot that Broadwell-DE has its own distinct model number different
from Broadwell-EP or -EX.
Fixing this isn't just adding a line to the array of cpuids - the
exising code assumed a 1:1 mapping between entries in that array and the
"enum type" values. Added the type to pci_id_table structure to remove
this dependency and allows two Broadwell cpu models.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Cc: Aristeu Rozanski <arozansk@redhat.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Fixes: 2c1ea4c700 ("EDAC, sb_edac: Use cpu family/model in driver detection")
Link: http://lkml.kernel.org/r/b3cffe40dec6dfe0235a5d52a504f0ba86a07ce7.1464902605.git.tony.luck@intel.com
Signed-off-by: Borislav Petkov <bp@suse.de>
- A number of embarassing buglets (GICv3, PIC32)
- A more substential errata workaround for Cavium's GICv3 ITS
(kept for post-rc1 due to its dependency on NUMA)
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Merge tag 'irqchip-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Merge irqchip updates from Marc Zyngier:
- A number of embarassing buglets (GICv3, PIC32)
- A more substential errata workaround for Cavium's GICv3 ITS
(kept for post-rc1 due to its dependency on NUMA)
United Western Technologies Corp, known primarily as UniWest,
is a manufacturer of eddy current and ultrasonic testing equipment.
Signed-off-by: Joshua Clayton <stillcompiling@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
The property marvell,wakeup-pin and marvell,wakeup-gap-ms are read as
u16 in the driver. Fix documentation and example accordingly.
Signed-off-by: Wei-Ning Huang <wnhuang@chromium.org>
Signed-off-by: Rob Herring <robh@kernel.org>
commit 93c667ca25
("of: *node argument to of_parse_phandle_with_args should be const")
changed to const for struct device node *np,
but it cares CONFIG_OF case only, !CONFIG_OF case need it too.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Rob Herring <robh@kernel.org>
pageblock_order can be (at least) an unsigned int or an unsigned long
depending on the kernel config and architecture, so use max_t(unsigned
long ...) when comparing it.
fixes these warnings:
In file included from include/linux/list.h:8:0,
from include/linux/kobject.h:20,
from include/linux/of.h:21,
from drivers/of/of_reserved_mem.c:17:
drivers/of/of_reserved_mem.c: In function ‘__reserved_mem_alloc_size’:
include/linux/kernel.h:748:17: warning: comparison of distinct pointer types lacks a cast
(void) (&_max1 == &_max2); \
^
include/linux/kernel.h:747:9: note: in definition of macro ‘max’
typeof(y) _max2 = (y); \
^
drivers/of/of_reserved_mem.c:131:48: note: in expansion of macro ‘max’
align = max(align, (phys_addr_t)PAGE_SIZE << max(MAX_ORDER - 1, pageblock_ord
^
include/linux/kernel.h:748:17: warning: comparison of distinct pointer types lacks a cast
(void) (&_max1 == &_max2); \
^
include/linux/kernel.h:747:21: note: in definition of macro ‘max’
typeof(y) _max2 = (y); \
^
drivers/of/of_reserved_mem.c:131:48: note: in expansion of macro ‘max’
align = max(align, (phys_addr_t)PAGE_SIZE << max(MAX_ORDER - 1, pageblock_ord
^
Fixes: 1cc8e3458b ("drivers: of: of_reserved_mem: fixup the alignment with CMA setup")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Rob Herring <robh@kernel.org>
Shifting sensor data to the right 2 bits was incorrect and caused the
scaling values + offsets to be invalid.
Reported-by: Alison Schofield <amsfield22@gmail.com>
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Tested-by: Alison Schofield <amsfield22@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
There was an alignment mismatch issue for CMA and it was fixed by
commit 1cc8e3458b ("drivers: of: of_reserved_mem: fixup the alignment with CMA setup").
However the way of the commit considers not only dma-contiguous(CMA) but also
dma-coherent which has no that requirement.
This patch checks more to distinguish dma-contiguous(CMA) from dma-coherent.
Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com>
Acked-by: Jason Liu <r64343@freescale.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
[robh: remove erroneous opening bracket]
Signed-off-by: Rob Herring <robh@kernel.org>
The kernel-doc for the of_irq_get[_byname]() is clearly inadequate in
describing the return values -- of_irq_get_byname() is documented better
than of_irq_get() but it still doesn't mention that 0 is returned iff
irq_create_of_mapping() fails (it doesn't return an error code in this
case). Document all possible return value variants, making the writing
of the word "IRQ" consistent, while at it...
Fixes: 9ec36cafe4 ("of/irq: do irq resolution in platform_get_irq")
Fixes: ad69674e73 ("of/irq: do irq resolution in platform_get_irq_byname()")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
CC: stable@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Without this, the iio:deviceX is missing in the /sys/bus/i2c/devices/0-0039
Some userspace tools use this path to identify a specific instance of the
device.
Signed-off-by: Yong Li <sdliyong@gmail.com>
Reviewed-By: Matt Ranostay <mranostay@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
When attaching a pollfunc iio_trigger_attach_poll_func will allocate a
virtual irq and call the driver's set_trigger_state function. Fix error
handling to undo previous steps if any fails.
In particular this fixes handling errors from a driver's
set_trigger_state function. When using triggered buffers a failure to
enable the trigger used to make the buffer unusable.
Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
With ARM64_64K_PAGES and RANDOMIZE_TEXT_OFFSET enabled, we hit the
following issue on the boot:
kernel BUG at arch/arm64/mm/mmu.c:480!
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 4.6.0 #310
Hardware name: ARM Juno development board (r2) (DT)
task: ffff000008d58a80 ti: ffff000008d30000 task.ti: ffff000008d30000
PC is at map_kernel_segment+0x44/0xb0
LR is at paging_init+0x84/0x5b0
pc : [<ffff000008c450b4>] lr : [<ffff000008c451a4>] pstate: 600002c5
Call trace:
[<ffff000008c450b4>] map_kernel_segment+0x44/0xb0
[<ffff000008c451a4>] paging_init+0x84/0x5b0
[<ffff000008c42728>] setup_arch+0x198/0x534
[<ffff000008c40848>] start_kernel+0x70/0x388
[<ffff000008c401bc>] __primary_switched+0x30/0x74
Commit 7eb90f2ff7 ("arm64: cover the .head.text section in the .text
segment mapping") removed the alignment between the .head.text and .text
sections, and used the _text rather than the _stext interval for mapping
the .text segment.
Prior to this commit _stext was always section aligned and didn't cause
any issue even when RANDOMIZE_TEXT_OFFSET was enabled. Since that
alignment has been removed and _text is used to map the .text segment,
we need ensure _text is always page aligned when RANDOMIZE_TEXT_OFFSET
is enabled.
This patch adds logic to TEXT_OFFSET fuzzing to ensure that the offset
is always aligned to the kernel page size. To ensure this, we rely on
the PAGE_SHIFT being available via Kconfig.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: Sudeep Holla <sudeep.holla@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Fixes: 7eb90f2ff7 ("arm64: cover the .head.text section in the .text segment mapping")
Signed-off-by: Will Deacon <will.deacon@arm.com>
In some cases (e.g. the awk for CONFIG_RANDOMIZE_TEXT_OFFSET) we would
like to make use of PAGE_SHIFT outside of code that can include the
usual header files.
Add a new CONFIG_ARM64_PAGE_SHIFT for this, likewise with
ARM64_CONT_SHIFT for consistency.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
The page table dump code logs spans of entries at the same level
(pgd/pud/pmd/pte) which have the same attributes. While we log the
(decoded) attributes, we don't log the level, which leaves the output
ambiguous and/or confusing in some cases.
For example:
0xffff800800000000-0xffff800980000000 6G RW NX SHD AF BLK UXN MEM/NORMAL
If using 4K pages, this may describe a span of 6 1G block entries at the
PGD/PUD level, or 3072 2M block entries at the PMD level.
This patch adds the page table level to each output line, removing this
ambiguity. For the example above, this will produce:
0xffffffc800000000-0xffffffc980000000 6G PUD RW NX SHD AF BLK UXN MEM/NORMAL
When 3 level tables are in use, and we use the asm-generic/nopud.h
definitions, the dump code treats each entry in the PGD as a 1 element
table at the PUD level, and logs spans as being PUDs, which can be
confusing. To counteract this, the "PUD" mnemonic is replaced with "PGD"
when CONFIG_PGTABLE_LEVELS <= 3. Likewise for "PMD" when
CONFIG_PGTABLE_LEVELS <= 2.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Huang Shijie <shijie.huang@arm.com>
Cc: Laura Abbott <labbott@fedoraproject.org>
Cc: Steve Capper <steve.capper@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Commit ab893fb9f1 ("arm64: introduce KIMAGE_VADDR as the virtual
base of the kernel region") logically split KIMAGE_VADDR from
PAGE_OFFSET, and since commit f9040773b7 ("arm64: move kernel
image to base of vmalloc area") the two have been distinct values.
Unfortunately, neither commit updated the comment above these
definitions, which now erroneously states that PAGE_OFFSET is the start
of the kernel image rather than the start of the linear mapping.
This patch fixes said comment, and introduces an explanation of
KIMAGE_VADDR.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
pmu->irq_affinity will not be freed if an error occurred within
arm_pmu_device_probe after of_pmu_irq_cfg has been called.
Note that in the case of_pmu_irq_cfg is returning an error,
pmu->irq_affinity will not be set, but it should be NULL as pmu was
kzalloc'd. Therefore the result kfree(NULL) is benign.
Signed-off-by: Julien Grall <julien.grall@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
The global variable __oprofile_cpu_pmu is set before the PMU is fully
initialized. If an error occurs before the end of the initialization,
the PMU will be freed and the variable will contain an invalid pointer.
This will result in a kernel crash when perf will be used.
Fix it by moving the setting of __oprofile_cpu_pmu when the PMU is fully
initialized (i.e when it is no longer possible to fail).
Cc: <stable@vger.kernel.org>
Signed-off-by: Julien Grall <julien.grall@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
The only function called by of_pmu_irq_cfg that will increment the
reference count on dn is of_parse_phandle.
Each time we successfully parse a possible CPU from an
interrupt-affinity property, we increment the refcount of that CPU node
once via of_parse_handle. After validating the CPU is possible, we
decrement the refcount once. Subsequently, we decrement the refcount
again, either as part of an early break if we don't have a matching SPI,
or as part of the end of the loop body.
This will lead to decrementing twice the refcounnt.
Remove the second pairs of call to of_node_put as nobody is using dn
between the first and second call to of_node_put.
Signed-off-by: Julien Grall <julien.grall@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
If we take an exception we don't expect (e.g. SError), we report this in
the bad_mode handler with pr_crit. Depending on the configured log
level, we may or may not log additional information in functions called
subsequently. Notably, the messages in dump_stack (including the CPU
number) are printed with KERN_DEFAULT and may not appear.
Some exceptions have an IMPLEMENTATION DEFINED ESR_ELx.ISS encoding, and
knowing the CPU number is crucial to correctly decode them. To ensure
that this is always possible, we should log the CPU number along with
the ESR_ELx value, so we are not reliant on subsequent logs or
additional printk configuration options.
This patch logs the CPU number in bad_mode such that it is possible for
a developer to decode these exceptions, provided access to sufficient
documentation.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: Al Grant <Al.Grant@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Martin <dave.martin@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Broadwell made a small change to the rank target register moving the
target rank ID field up from bits 16:19 to bits 20:23.
Also found that the offset field grew by one bit in the IVY_BRIDGE to
HASWELL transition, so fix the RIR_OFFSET() macro too.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Cc: stable@vger.kernel.org # v3.19+
Cc: Aristeu Rozanski <arozansk@redhat.com>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/2943fb819b1f7e396681165db9c12bb3df0e0b16.1464735623.git.tony.luck@intel.com
Signed-off-by: Borislav Petkov <bp@suse.de>
Commit:
78ce248faa ("efi: Iterate over efi.memmap in for_each_efi_memory_desc()")
introduced a regression for systems booted with the 'noefi' kernel option.
In particular, I observed an early kernel hang in efi_find_mirror()'s
for_each_efi_memory_desc() call. As we don't have efi memmap on this
system we enter this iterator with the following parameters:
efi.memmap.map = 0, efi.memmap.map_end = 0, efi.memmap.desc_size = 28
... then for_each_efi_memory_desc_in_map() does the following comparison:
(md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size);
... where md = 0, (m)->map_end = 0 and (m)->desc_size = 28 but when we subtract
something from a NULL pointer wrap around happens and we end up returning
invalid pointer and crash.
Fix it by using the correct pointer arithmetics.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Fixes: 78ce248faa ("efi: Iterate over efi.memmap in for_each_efi_memory_desc()")
Link: http://lkml.kernel.org/r/1464690224-4503-2-git-send-email-matt@codeblueprint.co.uk
[ Made the changelog more readable. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Add the pin configuration value of this machine into the pin_quirk
table to make DELL1_MIC_NO_PRESENCE apply to this machine.
Signed-off-by: AceLan Kao <acelan.kao@canonical.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
There was a report that on certain Broadwell-EP systems writing any bit of
the SBOX PMU initialization MSR would #GP at boot. This did not happen
on all systems. My test systems booted fine.
Considering both DE and EP may have such issues, this patch removes SBOX
support for all Broadwell platforms for now.
Reported-and-tested-by: Mark van Dijk <mark@voidzero.net>
Signed-off-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1464347540-5763-1-git-send-email-kan.liang@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Recursive locking for ww_mutexes was originally conceived as an
exception. However, it is heavily used by the DRM atomic modesetting
code. Currently, the recursive deadlock is checked after we have queued
up for a busy-spin and as we never release the lock, we spin until
kicked, whereupon the deadlock is discovered and reported.
A simple solution for the now common problem is to move the recursive
deadlock discovery to the first action when taking the ww_mutex.
Suggested-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
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: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1464293297-19777-1-git-send-email-chris@chris-wilson.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Commit 50755bc1c3 ("seqlock: fix raw_read_seqcount_latch()") broke
raw_read_seqcount_latch().
If you look at the comment that was modified; the thing that changes is
the seq count, not the latch pointer.
* void latch_modify(struct latch_struct *latch, ...)
* {
* smp_wmb(); <- Ensure that the last data[1] update is visible
* latch->seq++;
* smp_wmb(); <- Ensure that the seqcount update is visible
*
* modify(latch->data[0], ...);
*
* smp_wmb(); <- Ensure that the data[0] update is visible
* latch->seq++;
* smp_wmb(); <- Ensure that the seqcount update is visible
*
* modify(latch->data[1], ...);
* }
*
* The query will have a form like:
*
* struct entry *latch_query(struct latch_struct *latch, ...)
* {
* struct entry *entry;
* unsigned seq, idx;
*
* do {
* seq = lockless_dereference(latch->seq);
So here we have:
seq = READ_ONCE(latch->seq);
smp_read_barrier_depends();
Which is exactly what we want; the new code:
seq = ({ p = READ_ONCE(latch);
smp_read_barrier_depends(); p })->seq;
is just wrong; because it looses the volatile read on seq, which can now
be torn or worse 'optimized'. And the read_depend barrier is also placed
wrong, we want it after the load of seq, to match the above data[]
up-to-date wmb()s.
Such that when we dereference latch->data[] below, we're guaranteed to
observe the right data.
*
* idx = seq & 0x01;
* entry = data_query(latch->data[idx], ...);
*
* smp_rmb();
* } while (seq != latch->seq);
*
* return entry;
* }
So yes, not passing a pointer is not pretty, but the code was correct,
and isn't anymore now.
Change to explicit READ_ONCE()+smp_read_barrier_depends() to avoid
confusion and allow strict lockless_dereference() checking.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 50755bc1c3 ("seqlock: fix raw_read_seqcount_latch()")
Link: http://lkml.kernel.org/r/20160527111117.GL3192@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
If bootloader has set a wrong DPLL then we must trash those values
and re-program it anyways. This fixes USB3 devices not being enumerated
on beagle-x15 if usb was started in u-boot.
We don't re-program SATA DPLL if it is locked as it was causing
SATA failures if device was hotpluged after boot.
Reported-by: Robert Nelson <robertcnelson@gmail.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
The values computed during Diffie-Hellman key exchange are often used
in combination with key derivation functions to create cryptographic
keys. Add a placeholder for a later implementation to configure a
key derivation function that will transform the Diffie-Hellman
result returned by the KEYCTL_DH_COMPUTE command.
[This patch was stripped down from a patch produced by Mat Martineau that
had a bug in the compat code - so for the moment Stephan's patch simply
requires that the placeholder argument must be NULL]
Original-signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
This print can really spam the kernel log in case we are truncating
mem_banks, so just print this info once. It should also not be classified
as warning.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
amdkfd need to destroy the debug manager in case amdkfd's notifier
function is called before the unbind function, because in that case,
the unbind function will exit without destroying debug manager.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
CC: Stable <stable@vger.kernel.org>
When unbinding a process from a device (initiated by amd_iommu_v2), the
driver needs to make sure that process still exists in the process table.
There is a possibility that amdkfd's own notifier handler -
kfd_process_notifier_release() - was called before the unbind function
and it already removed the process from the process table.
v2:
Because there can be only one process with the specified pasid, and
because *p can't be NULL inside the hash_for_each_rcu macro, it is more
reasonable to just put the whole code inside the if statement that
compares the pasid value. That way, when we exit hash_for_each_rcu, we
simply exit the function as well.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
CC: Stable <stable@vger.kernel.org>
* multiple compile break fixes for missing includes, bad kconfig dependencies.
* remove regulator API misuse causing deprecation warnings
* OMAP5 HDMI fixes for DDC and AVI infoframe
* OMAP4 HDMI fix for CEC
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Merge tag 'omapdrm-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux into drm-fixes
omapdrm fixes for 4.7
* multiple compile break fixes for missing includes, bad kconfig dependencies.
* remove regulator API misuse causing deprecation warnings
* OMAP5 HDMI fixes for DDC and AVI infoframe
* OMAP4 HDMI fix for CEC
* tag 'omapdrm-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
drm/omap: include gpio/consumer.h where needed
drm/omap: include linux/seq_file.h where needed
Revert "drm/omap: no need to select OMAP2_DSS"
drm/omap: Remove regulator API abuse
OMAPDSS: HDMI5: Change DDC timings
OMAPDSS: HDMI5: Fix AVI infoframe
drm/omap: fix OMAP4 hdmi_core_powerdown_disable()
drm/omap: Fix missing includes
drm/omapdrm: include pinctrl/consumer.h where needed
