This driver communicates with the Atmel microcontroller for sequencing
the poweron of the TC358762 DSI-DPI bridge and controlling the
backlight PWM.
v2: Set the same default orientation as the closed source firmware
used, which is the best for viewing angle.
v3: Rewrite as an i2c client driver after bridge driver rejection.
v4: Finish probe without the DSI host, using the new delayed
registration, and attach to the host during mipi_dsi_driver probe.
v5: Rework to drop the "probe without DSI host" mode again, now that
vc4 will create the host early on.
v6: Drop unused brightness #define (noticed by Thierry)
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20170927193654.12609-4-eric@anholt.net
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Acked-by: Thierry Reding <treding@nvidia.com>
SiI9234 transmitter converts eTMDS/HDMI signal to MHL 1.0.
It is controlled via I2C bus. Its interaction with other
devices in video pipeline is performed mainly on HW level.
The only interaction it does on device driver level is
filtering-out unsupported video modes, it exposes drm_bridge
interface to perform this operation.
This patch is based on the code refactored by Tomasz Stanislawski
<t.stanislaws@samsung.com>, which was initially developed by:
Adam Hampson <ahampson@sta.samsung.com>
Erik Gilling <konkers@android.com>
Shankar Bandal <shankar.b@samsung.com>
Dharam Kumar <dharam.kr@samsung.com>
Signed-off-by: Maciej Purski <m.purski@samsung.com>
Acked-by: Rob Herring <robh@kernel.org> [for dt bindings]
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1507212431-5801-2-git-send-email-m.purski@samsung.com
Commit 669c9215af ("drm/atomic: Make async plane update checks work as
intended, v2.") assumed incorrectly that if only 1 plane is matched in
the loop, the variables will be set to that plane. In reality we reset
them to NULL every time a new plane was iterated. This behavior is
surprising, so fix this by making the for loops only assign the
variables on a match.
When we have not added all the planes/crtc/connector to the state, and
there's a few NULL ones after the last one we iterated, te assumption
is broken that the pointers will hold the values from the last loop
iteration, which holds true for all other for_each macros we're using.
Except of course the iterator pointer itself, but that one really is
entirely internal.
Cc: Dmitry Osipenko <digetx@gmail.com>
Fixes: 669c9215af ("drm/atomic: Make async plane update checks work as intended, v2.")
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170927083532.5756-2-maarten.lankhorst@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Tested-by: Dmitry Osipenko <digetx@gmail.com>
More drm-misc for 4.15:
Cross-subsystem Changes:
- bunch more simple outreachy patches (Meghana Madhyastha, Aishwarya
Pant, Haneen Mohammed)
- Quite a pile of static checker/cocci/spelling fixups all over.
- Final driver patches+core cleanup of Noralf's new drm_gem_fb_create
helper.
Core Changes:
- legacy DPMS docs improved
- add dri-devel m-l to fbdev to catch people who try to fix
fbcon-on-kms bugs in the wrong place
Driver Changes:
- vc4: prep for dsi panels (Eric)
* tag 'drm-misc-next-2017-10-05' of git://anongit.freedesktop.org/git/drm-misc: (34 commits)
drm: fix typo in drm_gem_get_pages() comment
MAINTAINERS: Add dri-devel as a mailing list for anything fbdev
drm/virtio: Replace instances of reference/unreference with get/put
drm/fb-cma-helper: Remove unused functions
drm/tve200: Use drm_gem_fb_create() and drm_gem_fb_prepare_fb()
drm/sun4i: Use drm_gem_fb_create()
drm/shmobile: Use drm_gem_fb_create()
drm/rcar-du: Use drm_gem_fb_create()
drm/mxsfb: Use drm_gem_fb_create() and drm_gem_fb_prepare_fb()
drm/meson: Use drm_gem_fb_create()
drm/hisilicon/kirin: Use drm_gem_fb_create()
drm/fsl-dcu: Use drm_gem_fb_create()
drm/tinydrm: Use drm_gem_framebuffer_helper
drm: of: always initialize panel in drm_of_find_panel_or_bridge()
drm/tve200: Check for IS_ERR instead of NULL in probe
drm/tve200: make two functions static
drm/armada: Remove unused #include <drmP.h>
drm/rockchip: Rely on the default best_encoder() behavior
drm/vc4: Set up the DSI host at pdev probe time, not component bind.
drm/vc4: Avoid using vrefresh==0 mode in DSI htotal math.
...
I spent an embarrassingly long time looking for drm_gem_init_object()
before I realized I was actually looking for drm_gem_object_init().
Fix the typo to keep other poor developers from suffering the same
fate.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1507045091-6550-1-git-send-email-jcrouse@codeaurora.org
fbdev is in maintenance only, except that it's still used by drm
through the drm fbdev emulation, to be able to use fbcon. And people
might want to sometimes extend fbcon to enable new features for drm
drivers, e.g. Hans' panel orientation work.
The problem is that when those patches only touch fbdev code they'll
never show up on drm developer's radar, which means we end up with
designs that don't really fit whell into the full stack. That happened
a bit with the panel orientation work, where an fbcon patch made it
into 4.14, implementing a design that won't really work on the drm
side. Which means we now have to redo things, and on top coordinate 2
subsystem trees.
Since fbdev is super low-volume we can prevent this in the future by
simply adding the dri-devel mailing list to the fbdev subsystem.
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: Sean Paul <seanpaul@chromium.org>
Cc: David Airlie <airlied@linux.ie>
Acked-by: Sean Paul <seanpaul@chromium.org>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170908153528.17528-1-daniel.vetter@ffwll.ch
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BackMerge tag 'v4.14-rc3' into drm-next
Linux 4.14-rc3
Requested by Daniel for the tracing build fix in fixes.
Replace reference/unreference with get/put as it is consistent
with the kernel coding style. Done using the following semantic
patch by coccinelle.
@r@
expression e;
@@
-drm_gem_object_unreference_unlocked(e);
+drm_gem_object_put_unlocked(e);
Signed-off-by: Srishti Sharma <srishtishar@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1506679419-7130-1-git-send-email-srishtishar@gmail.com
Pull x86 fixes from Thomas Gleixner:
"This contains the following fixes and improvements:
- Avoid dereferencing an unprotected VMA pointer in the fault signal
generation code
- Fix inline asm call constraints for GCC 4.4
- Use existing register variable to retrieve the stack pointer
instead of forcing the compiler to create another indirect access
which results in excessive extra 'mov %rsp, %<dst>' instructions
- Disable branch profiling for the memory encryption code to prevent
an early boot crash
- Fix a sparse warning caused by casting the __user annotation in
__get_user_asm_u64() away
- Fix an off by one error in the loop termination of the error patch
in the x86 sysfs init code
- Add missing CPU IDs to various Intel specific drivers to enable the
functionality on recent hardware
- More (init) constification in the numachip code"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/asm: Use register variable to get stack pointer value
x86/mm: Disable branch profiling in mem_encrypt.c
x86/asm: Fix inline asm call constraints for GCC 4.4
perf/x86/intel/uncore: Correct num_boxes for IIO and IRP
perf/x86/intel/rapl: Add missing CPU IDs
perf/x86/msr: Add missing CPU IDs
perf/x86/intel/cstate: Add missing CPU IDs
x86: Don't cast away the __user in __get_user_asm_u64()
x86/sysfs: Fix off-by-one error in loop termination
x86/mm: Fix fault error path using unsafe vma pointer
x86/numachip: Add const and __initconst to numachip2_clockevent
Pull timer fixes from Thomas Gleixner:
"This adds a new timer wheel function which is required for the
conversion of the timer callback function from the 'unsigned long
data' argument to 'struct timer_list *timer'. This conversion has two
benefits:
1) It makes struct timer_list smaller
2) Many callers hand in a pointer to the timer or to the structure
containing the timer, which happens via type casting both at setup
and in the callback. This change gets rid of the typecasts.
Once the conversion is complete, which is planned for 4.15, the old
setup function and the intermediate typecast in the new setup function
go away along with the data field in struct timer_list.
Merging this now into mainline allows a smooth queueing of the actual
conversion in the affected maintainer trees without creating
dependencies"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
um/time: Fixup namespace collision
timer: Prepare to change timer callback argument type
Pull smp/hotplug fixes from Thomas Gleixner:
"This addresses the fallout of the new lockdep mechanism which covers
completions in the CPU hotplug code.
The lockdep splats are false positives, but there is no way to
annotate that reliably. The solution is to split the completions for
CPU up and down, which requires some reshuffling of the failure
rollback handling as well"
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
smp/hotplug: Hotplug state fail injection
smp/hotplug: Differentiate the AP completion between up and down
smp/hotplug: Differentiate the AP-work lockdep class between up and down
smp/hotplug: Callback vs state-machine consistency
smp/hotplug: Rewrite AP state machine core
smp/hotplug: Allow external multi-instance rollback
smp/hotplug: Add state diagram
Pull scheduler fixes from Thomas Gleixner:
"The scheduler pull request comes with the following updates:
- Prevent a divide by zero issue by validating the input value of
sysctl_sched_time_avg
- Make task state printing consistent all over the place and have
explicit state characters for IDLE and PARKED so they wont be
displayed as 'D' state which confuses tools"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/sysctl: Check user input value of sysctl_sched_time_avg
sched/debug: Add explicit TASK_PARKED printing
sched/debug: Ignore TASK_IDLE for SysRq-W
sched/debug: Add explicit TASK_IDLE printing
sched/tracing: Use common task-state helpers
sched/tracing: Fix trace_sched_switch task-state printing
sched/debug: Remove unused variable
sched/debug: Convert TASK_state to hex
sched/debug: Implement consistent task-state printing
Pull perf fixes from Thomas Gleixner:
- Prevent a division by zero in the perf aux buffer handling
- Sync kernel headers with perf tool headers
- Fix a build failure in the syscalltbl code
- Make the debug messages of perf report --call-graph work correctly
- Make sure that all required perf files are in the MANIFEST for
container builds
- Fix the atrr.exclude kernel handling so it respects the
perf_event_paranoid and the user permissions
- Make perf test on s390x work correctly
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/aux: Only update ->aux_wakeup in non-overwrite mode
perf test: Fix vmlinux failure on s390x part 2
perf test: Fix vmlinux failure on s390x
perf tools: Fix syscalltbl build failure
perf report: Fix debug messages with --call-graph option
perf evsel: Fix attr.exclude_kernel setting for default cycles:p
tools include: Sync kernel ABI headers with tooling headers
perf tools: Get all of tools/{arch,include}/ in the MANIFEST
Pull locking fixes from Thomas Gleixner:
"Two fixes for locking:
- Plug a hole the pi_stat->owner serialization which was changed
recently and failed to fixup two usage sites.
- Prevent reordering of the rwsem_has_spinner() check vs the
decrement of rwsem count in up_write() which causes a missed
wakeup"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/rwsem-xadd: Fix missed wakeup due to reordering of load
futex: Fix pi_state->owner serialization
Pull irq fixes from Thomas Gleixner:
- Add a missing NULL pointer check in free_irq()
- Fix a memory leak/memory corruption in the generic irq chip
- Add missing rcu annotations for radix tree access
- Use ffs instead of fls when extracting data from a chip register in
the MIPS GIC irq driver
- Fix the unmasking of IPI interrupts in the MIPS GIC driver so they
end up at the target CPU and not at CPU0
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irq/generic-chip: Don't replace domain's name
irqdomain: Add __rcu annotations to radix tree accessors
irqchip/mips-gic: Use effective affinity to unmask
irqchip/mips-gic: Fix shifts to extract register fields
genirq: Check __free_irq() return value for NULL
Pull objtool fixes from Thomas Gleixner:
"Two small fixes for objtool:
- Support frame pointer setup via 'lea (%rsp), %rbp' which was not
yet supported and caused build warnings
- Disable unreacahble warnings for GCC4.4 and older to avoid false
positives caused by the compiler itself"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Support unoptimized frame pointer setup
objtool: Skip unreachable warnings for GCC 4.4 and older
The cma drivers use the drm_gem_framebuffer_helper functions now,
so remove drm_fb_cma_destroy, drm_fb_cma_create_handle,
drm_fb_cma_create_with_funcs, drm_fb_cma_create and
drm_fb_cma_prepare_fb.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1506255985-61113-11-git-send-email-noralf@tronnes.org
drm_fb_cma_create() and drm_fb_cma_prepare_fb() are just wrappers now,
use drm_gem_fb_create() and drm_gem_fb_prepare_fb() directly.
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/1506255985-61113-10-git-send-email-noralf@tronnes.org
drm_fb_cma_create() is just a wrapper around drm_gem_fb_create() now,
so use the function directly.
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/1506255985-61113-9-git-send-email-noralf@tronnes.org
drm_fb_cma_create() is just a wrapper around drm_gem_fb_create() now,
so use the function directly.
Cc: Xinliang Liu <z.liuxinliang@hisilicon.com>
Cc: Rongrong Zou <zourongrong@gmail.com>
Cc: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Cc: Chen Feng <puck.chen@hisilicon.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Xinliang Liu <z.liuxinliang@hisilicon.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/1506255985-61113-4-git-send-email-noralf@tronnes.org
The callers expect "panel" to be initialized, but that isn't true if we
return -ENODEV. It causes bugs like:
drivers/gpu/drm/tve200/tve200_drv.c:83 tve200_modeset_init()
error: uninitialized symbol 'panel'.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20170925103038.lvr5msjvekwczctn@mwanda
The functions tve200_display_disable and tve200_display_funcs are
local to the source and do not need to be in global scope, so make
them static.
Cleans up sparse warnings:
symbol 'tve200_display_disable' was not declared. Should it be static?
symbol 'tve200_display_funcs' was not declared. Should it be static?
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20170922160516.16283-1-colin.king@canonical.com
Eight mostly minor fixes for recently discovered issues in drivers.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Eight mostly minor fixes for recently discovered issues in drivers"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ILLEGAL REQUEST + ASC==27 => target failure
scsi: aacraid: Add a small delay after IOP reset
scsi: scsi_transport_fc: Also check for NOTPRESENT in fc_remote_port_add()
scsi: scsi_transport_fc: set scsi_target_id upon rescan
scsi: scsi_transport_iscsi: fix the issue that iscsi_if_rx doesn't parse nlmsg properly
scsi: aacraid: error: testing array offset 'bus' after use
scsi: lpfc: Don't return internal MBXERR_ERROR code from probe function
scsi: aacraid: Fix 2T+ drives on SmartIOC-2000
Newly discovered species of fujitsu laptops break some assumptions about
ACPI device pairings.
fujitsu-laptop:
- Don't oops when FUJ02E3 is not presnt
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Merge tag 'platform-drivers-x86-v4.14-2' of git://git.infradead.org/linux-platform-drivers-x86
Pull x86 platform drivers fix from Darren Hart:
"Newly discovered species of fujitsu laptops break some assumptions
about ACPI device pairings.
fujitsu-laptop: Don't oops when FUJ02E3 is not present"
* tag 'platform-drivers-x86-v4.14-2' of git://git.infradead.org/linux-platform-drivers-x86:
platform/x86: fujitsu-laptop: Don't oops when FUJ02E3 is not presnt
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Merge tag 'led_fixes-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Pull LED fixes from Jacek Anaszewski:
"Four fixes for the as3645a LED flash controller and one update to
MAINTAINERS"
* tag 'led_fixes-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
MAINTAINERS: Add entry for MediaTek PMIC LED driver
as3645a: Unregister indicator LED on device unbind
as3645a: Use integer numbers for parsing LEDs
dt: bindings: as3645a: Use LED number to refer to LEDs
as3645a: Use ams,input-max-microamp as documented in DT bindings
Pull waitid fix from Al Viro:
"Fix infoleak in waitid()"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fix infoleak in waitid(2)
Pull btrfs fixes from David Sterba:
"We've collected a bunch of isolated fixes, for crashes, user-visible
behaviour or missing bits from other subsystem cleanups from the past.
The overall number is not small but I was not able to make it
significantly smaller. Most of the patches are supposed to go to
stable"
* 'for-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: log csums for all modified extents
Btrfs: fix unexpected result when dio reading corrupted blocks
btrfs: Report error on removing qgroup if del_qgroup_item fails
Btrfs: skip checksum when reading compressed data if some IO have failed
Btrfs: fix kernel oops while reading compressed data
Btrfs: use btrfs_op instead of bio_op in __btrfs_map_block
Btrfs: do not backup tree roots when fsync
btrfs: remove BTRFS_FS_QUOTA_DISABLING flag
btrfs: propagate error to btrfs_cmp_data_prepare caller
btrfs: prevent to set invalid default subvolid
Btrfs: send: fix error number for unknown inode types
btrfs: fix NULL pointer dereference from free_reloc_roots()
btrfs: finish ordered extent cleaning if no progress is found
btrfs: clear ordered flag on cleaning up ordered extents
Btrfs: fix incorrect {node,sector}size endianness from BTRFS_IOC_FS_INFO
Btrfs: do not reset bio->bi_ops while writing bio
Btrfs: use the new helper wbc_to_write_flags
Pull MD fixes from Shaohua Li:
"A few fixes for MD. Mainly fix a problem introduced in 4.13, which we
retry bio for some code paths but not all in some situations"
* tag 'md/4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
md/raid5: cap worker count
dm-raid: fix a race condition in request handling
md: fix a race condition for flush request handling
md: separate request handling
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Merge tag 'drm-fixes-for-v4.14-rc3' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Regular fixes pull, some amdkfd, amdgpu, etnaviv, sun4i, qxl, tegra
fixes.
I've got an outstanding pull for i915 but it wasn't on an rc2 base so
I wanted to ship these out first, I might get to it before rc3 or I
might not"
* tag 'drm-fixes-for-v4.14-rc3' of git://people.freedesktop.org/~airlied/linux:
drm/tegra: trace: Fix path to include
qxl: fix framebuffer unpinning
drm/sun4i: cec: Enable back CEC-pin framework
drm/amdkfd: Print event limit messages only once per process
drm/amdkfd: Fix kernel-queue wrapping bugs
drm/amdkfd: Fix incorrect destroy_mqd parameter
drm/radeon: disable hard reset in hibernate for APUs
drm/amdgpu: revert tile table update for oland
etnaviv: fix gem object list corruption
etnaviv: fix submit error path
qxl: fix primary surface handling
drm/amdkfd: check for null dev to avoid a null pointer dereference
Including:
* A comment fix for 'struct iommu_ops'
* Format string fixes for AMD IOMMU, unfortunatly I missed that
during review.
* Limit mediatek physical addresses to 32 bit for v7s to fix a
warning triggered in io-page-table code.
* Fix dma-sync in io-pgtable-arm-v7s code
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Merge tag 'iommu-fixes-v4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
- A comment fix for 'struct iommu_ops'
- Format string fixes for AMD IOMMU, unfortunatly I missed that during
review.
- Limit mediatek physical addresses to 32 bit for v7s to fix a warning
triggered in io-page-table code.
- Fix dma-sync in io-pgtable-arm-v7s code
* tag 'iommu-fixes-v4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu: Fix comment for iommu_ops.map_sg
iommu/amd: pr_err() strings should end with newlines
iommu/mediatek: Limit the physical address in 32bit for v7s
iommu/io-pgtable-arm-v7s: Need dma-sync while there is no QUIRK_NO_DMA
- SPsel register initialisation on reset as the architecture defines its
state as unknown
- Use READ_ONCE when dereferencing pmd_t pointers to avoid race
conditions in page_vma_mapped_walk() (or fast GUP) with concurrent
modifications of the page table
- Avoid invoking the mm fault handling code for kernel addresses (check
against TASK_SIZE) which would otherwise result in calling
might_sleep() in atomic context
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- SPsel register initialisation on reset as the architecture defines
its state as unknown
- Use READ_ONCE when dereferencing pmd_t pointers to avoid race
conditions in page_vma_mapped_walk() (or fast GUP) with concurrent
modifications of the page table
- Avoid invoking the mm fault handling code for kernel addresses (check
against TASK_SIZE) which would otherwise result in calling
might_sleep() in atomic context
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: fault: Route pte translation faults via do_translation_fault
arm64: mm: Use READ_ONCE when dereferencing pointer to pte table
arm64: Make sure SPsel is always set
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Merge tag 'for-linus-4.14c-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- avoid a warning when compiling with clang
- consider read-only bits in xen-pciback when writing to a BAR
- fix a boot crash of pv-domains
* tag 'for-linus-4.14c-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/mmu: Call xen_cleanhighmap() with 4MB aligned for page tables mapping
xen-pciback: relax BAR sizing write value check
x86/xen: clean up clang build warning
that was finally triggered by PCID support.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Mixed bugfixes. Perhaps the most interesting one is a latent bug that
was finally triggered by PCID support"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm/x86: Handle async PF in RCU read-side critical sections
KVM: nVMX: Fix nested #PF intends to break L1's vmlauch/vmresume
KVM: VMX: use cmpxchg64
KVM: VMX: simplify and fix vmx_vcpu_pi_load
KVM: VMX: avoid double list add with VT-d posted interrupts
KVM: VMX: extract __pi_post_block
KVM: PPC: Book3S HV: Check for updated HDSISR on P9 HDSI exception
KVM: nVMX: fix HOST_CR3/HOST_CR4 cache
kernel_waitid() can return a PID, an error or 0. rusage is filled in the first
case and waitid(2) rusage should've been copied out exactly in that case, *not*
whenever kernel_waitid() has not returned an error. Compat variant shares that
braino; none of kernel_wait4() callers do, so the below ought to fix it.
Reported-and-tested-by: Alexander Potapenko <glider@google.com>
Fixes: ce72a16fa7 ("wait4(2)/waitid(2): separate copying rusage to userland")
Cc: stable@vger.kernel.org # v4.13
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Currently we use current_stack_pointer() function to get the value
of the stack pointer register. Since commit:
f5caf621ee ("x86/asm: Fix inline asm call constraints for Clang")
... we have a stack register variable declared. It can be used instead of
current_stack_pointer() function which allows to optimize away some
excessive "mov %rsp, %<dst>" instructions:
-mov %rsp,%rdx
-sub %rdx,%rax
-cmp $0x3fff,%rax
-ja ffffffff810722fd <ist_begin_non_atomic+0x2d>
+sub %rsp,%rax
+cmp $0x3fff,%rax
+ja ffffffff810722fa <ist_begin_non_atomic+0x2a>
Remove current_stack_pointer(), rename __asm_call_sp to current_stack_pointer
and use it instead of the removed function.
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
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/20170929141537.29167-1-aryabinin@virtuozzo.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
