If page_move_anon_rmap() is refiling a pmd-splitted THP mapped in a tail
page from a pte, the "address" must be THP aligned in order for the
page->index bugcheck to pass in the CONFIG_DEBUG_VM=y builds.
Link: http://lkml.kernel.org/r/1464253620-106404-1-git-send-email-kirill.shutemov@linux.intel.com
Fixes: 6d0a07edd1 ("mm: thp: calculate the mapcount correctly for THP pages during WP faults")
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org> [4.5]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Tetsuo has reported:
Out of memory: Kill process 443 (oleg's-test) score 855 or sacrifice child
Killed process 443 (oleg's-test) total-vm:493248kB, anon-rss:423880kB, file-rss:4kB, shmem-rss:0kB
sh invoked oom-killer: gfp_mask=0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD), order=0, oom_score_adj=0
sh cpuset=/ mems_allowed=0
CPU: 2 PID: 1 Comm: sh Not tainted 4.6.0-rc7+ #51
Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/31/2013
Call Trace:
dump_stack+0x85/0xc8
dump_header+0x5b/0x394
oom_reaper: reaped process 443 (oleg's-test), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
In other words:
__oom_reap_task exit_mm
atomic_inc_not_zero
tsk->mm = NULL
mmput
atomic_dec_and_test # > 0
exit_oom_victim # New victim will be
# selected
<OOM killer invoked>
# no TIF_MEMDIE task so we can select a new one
unmap_page_range # to release the memory
The race exists even without the oom_reaper because anybody who pins the
address space and gets preempted might race with exit_mm but oom_reaper
made this race more probable.
We can address the oom_reaper part by using oom_lock for __oom_reap_task
because this would guarantee that a new oom victim will not be selected
if the oom reaper might race with the exit path. This doesn't solve the
original issue, though, because somebody else still might be pinning
mm_users and so __mmput won't be called to release the memory but that
is not really realiably solvable because the task will get away from the
oom sight as soon as it is unhashed from the task_list and so we cannot
guarantee a new victim won't be selected.
[akpm@linux-foundation.org: fix use of unused `mm', Per Stephen]
[akpm@linux-foundation.org: coding-style fixes]
Fixes: aac4536355 ("mm, oom: introduce oom reaper")
Link: http://lkml.kernel.org/r/1464271493-20008-1-git-send-email-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
register_page_bootmem_info_node() is invoked in mem_init(), so it will
be called before page_alloc_init_late() if DEFERRED_STRUCT_PAGE_INIT is
enabled. But, pfn_to_nid() depends on memmap which won't be fully setup
until page_alloc_init_late() is done, so replace pfn_to_nid() by
early_pfn_to_nid().
Link: http://lkml.kernel.org/r/1464210007-30930-1-git-send-email-yang.shi@linaro.org
Signed-off-by: Yang Shi <yang.shi@linaro.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
page_ext_init() checks suitable pages with pfn_to_nid(), but
pfn_to_nid() depends on memmap which will not be setup fully until
page_alloc_init_late() is done. Use early_pfn_to_nid() instead of
pfn_to_nid() so that page extension could be still used early even
though CONFIG_ DEFERRED_STRUCT_PAGE_INIT is enabled and catch early page
allocation call sites.
Suggested by Joonsoo Kim [1], this fix basically undoes the change
introduced by commit b8f1a75d61 ("mm: call page_ext_init() after all
struct pages are initialized") and fixes the same problem with a better
approach.
[1] http://lkml.kernel.org/r/CAAmzW4OUmyPwQjvd7QUfc6W1Aic__TyAuH80MLRZNMxKy0-wPQ@mail.gmail.com
Link: http://lkml.kernel.org/r/1464198689-23458-1-git-send-email-yang.shi@linaro.org
Signed-off-by: Yang Shi <yang.shi@linaro.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
I am proposing following updates to kdump maintainership. I have got
busy in other things and not getting time to spend on kdump.
Remove Haren Myneni as he has not participated in kdump development for
a long time now.
Add the names of Dave and Baoquan as kdump maintainers as they have been
contributing to kdump for a long time now and they are in a much better
position to spend time on this than me.
Mark myself as a reviewer.
Link: http://lkml.kernel.org/r/20160525131616.GB27291@redhat.com
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Simon Horman <horms@verge.net.au>
Cc: Haren Myneni <hbabu@us.ibm.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In the below commits kexec.c was split to kexec.c, kexec_file.c and
kexec_core.c.
commit a43cac0d9d ("kexec: split kexec_file syscall code to kexec_file.c")
commit 2965faa5e0 ("kexec: split kexec_load syscall from kexec core code")
Both kexec_file.c and kexec_core.c still belong to the kexec component.
In order to get correct mail lists by using the script get_maintainer.pl,
add these files to MAINTAINERS.
Link: http://lkml.kernel.org/r/1464189735-59113-1-git-send-email-mnghuan@gmail.com
Signed-off-by: Minfei Huang <mnghuan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If the current process is exiting, we don't invoke oom killer, instead
we give it access to memory reserves and try to reap its mm in case
nobody is going to use it. There's a mistake in the code performing
this check - we just ignore any process of the same thread group no
matter if it is exiting or not - see try_oom_reaper. Fix it.
Link: http://lkml.kernel.org/r/1464087628-7318-1-git-send-email-vdavydov@virtuozzo.com
Fixes: 3ef22dfff2 ("oom, oom_reaper: try to reap tasks which skip regular OOM killer path")Signed-off-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently direct writes inside i_size on a DIO_SKIP_HOLES filesystem are
not allowed to allocate blocks(get_more_blocks() sets 'create' to 0
before calling get_block() callback), if it's a sparse file, direct
writes fall back to buffered writes to avoid stale data exposure from
concurrent buffered read. But there're two cases that can result in
stale data exposure are not correctly detected.
1. The detection for "writing inside i_size" is not sufficient,
writes can be treated as "extending writes" wrongly. For example,
direct write 1FSB (file system block) to a 1FSB sparse file on
ext2/3/4, starting from offset 0, in this case it's writing inside
i_size, but 'create' is non-zero, because 'block_in_file' and
'(i_size_read(inode) >> blkbits' are both zero.
2. Direct writes starting from or beyong i_size (not inside i_size)
also could trigger block allocation and expose stale data. For
example, consider a sparse file with i_size of 2k, and a write to
offset 2k or 3k into the file, with a filesystem block size of 4k.
(Thanks to Jeff Moyer for pointing this case out in his review.)
The first problem can be demostrated by running ltp-aiodio test ADSP045
many times. When testing on extN filesystems, I see test failures
occasionally, buffered read could read non-zero (stale) data.
ADSP045: dio_sparse -a 4k -w 4k -s 2k -n 1
dio_sparse 0 TINFO : Dirtying free blocks
dio_sparse 0 TINFO : Starting I/O tests
non zero buffer at buf[0] => 0xffffffaa,ffffffaa,ffffffaa,ffffffaa
non-zero read at offset 0
dio_sparse 0 TINFO : Killing childrens(s)
dio_sparse 1 TFAIL : dio_sparse.c:191: 1 children(s) exited abnormally
The second problem can also be reproduced easily by a hacked dio_sparse
program, which accepts an option to specify the write offset.
What we should really do is to disable block allocation for writes that
could result in filling holes inside i_size.
Link: http://lkml.kernel.org/r/1463156728-13357-1-git-send-email-guaneryu@gmail.com
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Two new messages are added to support negotiating hb timeout. Stop
nodes frmo talking an old version to mount as they will cause the
negotiation to fail.
Link: http://lkml.kernel.org/r/1464231615-27939-1-git-send-email-junxiao.bi@oracle.com
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hr_last_timeout_start should be set as the last time where hb is
still OK. When hb write timeout, hung time will be (jiffies -
hr_last_timeout_start).
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Ryan Ding <ryan.ding@oracle.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Gang He <ghe@suse.com>
Cc: rwxybh <rwxybh@126.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sometimes io error is returned when storage is down for a while. Like
for iscsi device, stroage is made offline when session timeout, and this
will make all io return -EIO. For this case, nodes shouldn't do
negotiate timeout but should fence self. So let nodes fence self when
o2hb_do_disk_heartbeat return an error, this is the same behavior with
o2hb without negotiate timer.
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Ryan Ding <ryan.ding@oracle.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Gang He <ghe@suse.com>
Cc: rwxybh <rwxybh@126.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Ryan Ding <ryan.ding@oracle.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Gang He <ghe@suse.com>
Cc: rwxybh <rwxybh@126.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This message is used to re-queue write timeout timer and negotiate timer
when all nodes suffer a write hung to storage, this makes node not fence
self if storage down.
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Ryan Ding <ryan.ding@oracle.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Gang He <ghe@suse.com>
Cc: rwxybh <rwxybh@126.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This message is sent to master node when non-master nodes's negotiate
timer expired. Master node records these nodes in a bitmap which is
used to do write timeout timer re-queue decision.
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Ryan Ding <ryan.ding@oracle.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Gang He <ghe@suse.com>
Cc: rwxybh <rwxybh@126.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This series of patches is to fix the issue that when storage down, all
nodes will fence self due to write timeout.
With this patch set, all nodes will keep going until storage back
online, except if the following issue happens, then all nodes will do as
before to fence self.
1. io error got
2. network between nodes down
3. nodes panic
This patch (of 6):
When storage down, all nodes will fence self due to write timeout. The
negotiate timer is designed to avoid this, with it node will wait until
storage up again.
Negotiate timer working in the following way:
1. The timer expires before write timeout timer, its timeout is half
of write timeout now. It is re-queued along with write timeout timer.
If expires, it will send NEGO_TIMEOUT message to master node(node with
lowest node number). This message does nothing but marks a bit in a
bitmap recording which nodes are negotiating timeout on master node.
2. If storage down, nodes will send this message to master node, then
when master node finds its bitmap including all online nodes, it sends
NEGO_APPROVL message to all nodes one by one, this message will
re-queue write timeout timer and negotiate timer. For any node doesn't
receive this message or meets some issue when handling this message, it
will be fenced. If storage up at any time, o2hb_thread will run and
re-queue all the timer, nothing will be affected by these two steps.
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Ryan Ding <ryan.ding@oracle.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Gang He <ghe@suse.com>
Cc: rwxybh <rwxybh@126.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull block fixes from Jens Axboe:
"A set of fixes that wasn't included in the first merge window pull
request. This pull request contains:
- A set of NVMe fixes from Keith, and one from Nic for the integrity
side of it.
- Fix from Ming, clearing ->mq_ops if we don't successfully setup a
queue for multiqueue.
- A set of stability fixes for bcache from Jiri, and also marking
bcache as orphaned as it's no longer actively maintained (in
mainline, at least)"
* 'for-linus' of git://git.kernel.dk/linux-block:
blk-mq: clear q->mq_ops if init fail
MAINTAINERS: mark bcache as orphan
bcache: bch_gc_thread() is not freezable
bcache: bch_allocator_thread() is not freezable
bcache: bch_writeback_thread() is not freezable
nvme/host: Add missing blk_integrity tag_size + flags assignments
NVMe: Add device ID's with stripe quirk
NVMe: Short-cut removal on surprise hot-unplug
NVMe: Allow user initiated rescan
NVMe: Reduce driver log spamming
NVMe: Unbind driver on failure
NVMe: Delete only created queues
NVMe: Allocate queues only for online cpus
We've already noticed a few flaws in the MTD work for v4.7-rc1:
* The Atmel folks got ahead of themselves on trying to support their latest
hardware and were working off incorrect documentation. Fix up the NAND
driver to get this correct.
* Fix up device tree example documentation to use the latest recommendations
for describing NAND ECC algorithms.
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Merge tag 'for-linus-20160527' of git://git.infradead.org/linux-mtd
Pull MTD fixes from Brian Norris:
"We've already noticed a few flaws in the MTD work for v4.7-rc1:
- The Atmel folks got ahead of themselves on trying to support their
latest hardware and were working off incorrect documentation. Fix
up the NAND driver to get this correct.
- Fix up device tree example documentation to use the latest
recommendations for describing NAND ECC algorithms"
* tag 'for-linus-20160527' of git://git.infradead.org/linux-mtd:
Documentation: dt: mtd: drop "soft_bch" from example
Revert "mtd: atmel_nand: Support variable RB_EDGE interrupts"
Pull drm fixes from Dave Airlie:
- one IMX built-in regression fix
- a set of amdgpu fixes, mostly powerplay and polaris GPU stuff
- a set of i915 fixes all over, many cc'ed to stable.
The i915 batch contain support for DP++ dongle detection, which is
used to fix some regressions in the HDMI color depth area
* tag 'drm-fixes-v4.7-rc1' of git://people.freedesktop.org/~airlied/linux: (44 commits)
drm/amd: add Kconfig dependency for ACP on DRM_AMDGPU
drm/amdgpu: Fix hdmi deep color support.
drm/amdgpu: fix bug in fence driver fini
drm/i915: Stop automatically retiring requests after a GPU hang
drm/i915: Unify intel_ring_begin()
drm/i915: Ignore stale wm register values on resume on ilk-bdw (v2)
drm/i915/psr: Try to program link training times correctly
drm/imx: Match imx-ipuv3-crtc components using device node in platform data
drm/i915/bxt: Adjusting the error in horizontal timings retrieval
drm/i915: Don't leave old junk in ilk active watermarks on readout
drm/i915: s/DPPL/DPLL/ for SKL DPLLs
drm/i915: Fix gen8 semaphores id for legacy mode
drm/i915: Set crtc_state->lane_count for HDMI
drm/i915/BXT: Retrieving the horizontal timing for DSI
drm/i915: Protect gen7 irq_seqno_barrier with uncore lock
drm/i915: Re-enable GGTT earlier during resume on pre-gen6 platforms
drm/i915: Determine DP++ type 1 DVI adaptor presence based on VBT
drm/i915: Enable/disable TMDS output buffers in DP++ adaptor as needed
drm/i915: Respect DP++ adaptor TMDS clock limit
drm: Add helper for DP++ adaptors
...
Mostly minor updates and cleanups. One new power management controller driver
for Intel Core SoCs.
platform/x86:
- Add PMC Driver for Intel Core SoC
dell-rbtn:
- Ignore ACPI notifications if device is suspended
thinkpad_acpi:
- save kbdlight state on suspend and restore it on resume
intel_menlow:
- reduce code duplication
asus-wmi:
- provide access to ALS control
ideapad-laptop:
- add a new WMI string for ESC key
surfacepro3_button:
- Add a warning when switching to tablet mode
sony-laptop:
- Avoid oops on module unload for older laptops
intel_telemetry:
- Constify telemetry_core_ops structures
fujitsu-laptop:
- Use IS_ENABLED() instead of checking for built-in or module
asus-laptop:
- correct error handling in sysfs_acpi_set
- remove redundant initializers
- correct error handling in asus_read_brightness()
fujitsu-laptop:
- Support radio LED
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Merge tag 'platform-drivers-x86-v4.7-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
Pull x86 platform driver updates from Darren Hart:
"Mostly minor updates and cleanups. One new power management
controller driver for Intel Core SoCs.
platform/x86:
- Add PMC Driver for Intel Core SoC
dell-rbtn:
- Ignore ACPI notifications if device is suspended
thinkpad_acpi:
- save kbdlight state on suspend and restore it on resume
intel_menlow:
- reduce code duplication
asus-wmi:
- provide access to ALS control
ideapad-laptop:
- add a new WMI string for ESC key
surfacepro3_button:
- Add a warning when switching to tablet mode
sony-laptop:
- Avoid oops on module unload for older laptops
intel_telemetry:
- Constify telemetry_core_ops structures
fujitsu-laptop:
- Use IS_ENABLED() instead of checking for built-in or module
asus-laptop:
- correct error handling in sysfs_acpi_set
- remove redundant initializers
- correct error handling in asus_read_brightness()
fujitsu-laptop:
- Support radio LED"
* tag 'platform-drivers-x86-v4.7-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
platform/x86: Add PMC Driver for Intel Core SoC
dell-rbtn: Ignore ACPI notifications if device is suspended
thinkpad_acpi: save kbdlight state on suspend and restore it on resume
intel_menlow: reduce code duplication
asus-wmi: provide access to ALS control
ideapad-laptop: add a new WMI string for ESC key
surfacepro3_button: Add a warning when switching to tablet mode
sony-laptop: Avoid oops on module unload for older laptops
intel_telemetry: Constify telemetry_core_ops structures
fujitsu-laptop: Use IS_ENABLED() instead of checking for built-in or module
asus-laptop: correct error handling in sysfs_acpi_set
asus-laptop: remove redundant initializers
asus-laptop: correct error handling in asus_read_brightness()
fujitsu-laptop: Support radio LED
Pull intel IOMMU updates from David Woodhouse:
"This patchset improves the scalability of the Intel IOMMU code by
resolving two spinlock bottlenecks and eliminating the linearity of
the IOVA allocator, yielding up to ~5x performance improvement and
approaching 'iommu=off' performance"
* git://git.infradead.org/intel-iommu:
iommu/vt-d: Use per-cpu IOVA caching
iommu/iova: introduce per-cpu caching to iova allocation
iommu/vt-d: change intel-iommu to use IOVA frame numbers
iommu/vt-d: avoid dev iotlb logic for domains with no dev iotlbs
iommu/vt-d: only unmap mapped entries
iommu/vt-d: correct flush_unmaps pfn usage
iommu/vt-d: per-cpu deferred invalidation queues
iommu/vt-d: refactoring of deferred flush entries
(kvm_stat had nothing to do with QEMU in the first place -- the tool
only interprets debugfs)
- expose per-vm statistics in debugfs and support them in kvm_stat
(KVM always collected per-vm statistics, but they were summarised into
global statistics)
x86:
- fix dynamic APICv (VMX was improperly configured and a guest could
access host's APIC MSRs, CVE-2016-4440)
- minor fixes
ARM changes from Christoffer Dall:
"This set of changes include the new vgic, which is a reimplementation
of our horribly broken legacy vgic implementation. The two
implementations will live side-by-side (with the new being the
configured default) for one kernel release and then we'll remove the
legacy one.
Also fixes a non-critical issue with virtual abort injection to
guests."
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull second batch of KVM updates from Radim Krčmář:
"General:
- move kvm_stat tool from QEMU repo into tools/kvm/kvm_stat (kvm_stat
had nothing to do with QEMU in the first place -- the tool only
interprets debugfs)
- expose per-vm statistics in debugfs and support them in kvm_stat
(KVM always collected per-vm statistics, but they were summarised
into global statistics)
x86:
- fix dynamic APICv (VMX was improperly configured and a guest could
access host's APIC MSRs, CVE-2016-4440)
- minor fixes
ARM changes from Christoffer Dall:
- new vgic reimplementation of our horribly broken legacy vgic
implementation. The two implementations will live side-by-side
(with the new being the configured default) for one kernel release
and then we'll remove the legacy one.
- fix for a non-critical issue with virtual abort injection to guests"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (70 commits)
tools: kvm_stat: Add comments
tools: kvm_stat: Introduce pid monitoring
KVM: Create debugfs dir and stat files for each VM
MAINTAINERS: Add kvm tools
tools: kvm_stat: Powerpc related fixes
tools: Add kvm_stat man page
tools: Add kvm_stat vm monitor script
kvm:vmx: more complete state update on APICv on/off
KVM: SVM: Add more SVM_EXIT_REASONS
KVM: Unify traced vector format
svm: bitwise vs logical op typo
KVM: arm/arm64: vgic-new: Synchronize changes to active state
KVM: arm/arm64: vgic-new: enable build
KVM: arm/arm64: vgic-new: implement mapped IRQ handling
KVM: arm/arm64: vgic-new: Wire up irqfd injection
KVM: arm/arm64: vgic-new: Add vgic_v2/v3_enable
KVM: arm/arm64: vgic-new: vgic_init: implement map_resources
KVM: arm/arm64: vgic-new: vgic_init: implement vgic_init
KVM: arm/arm64: vgic-new: vgic_init: implement vgic_create
KVM: arm/arm64: vgic-new: vgic_init: implement kvm_vgic_hyp_init
...
This patch adds the Power Management Controller driver as a PCI driver
for Intel Core SoC architecture.
This driver can utilize debugging capabilities and supported features
as exposed by the Power Management Controller.
Please refer to the below specification for more details on PMC features.
http://www.intel.in/content/www/in/en/chipsets/100-series-chipset-datasheet-vol-2.html
The current version of this driver exposes SLP_S0_RESIDENCY counter.
This counter can be used for detecting fragile SLP_S0 signal related
failures and take corrective actions when PCH SLP_S0 signal is not
asserted after kernel freeze as part of suspend to idle flow
(echo freeze > /sys/power/state).
Intel Platform Controller Hub (PCH) asserts SLP_S0 signal when it
detects favorable conditions to enter its low power mode. As a
pre-requisite the SoC should be in deepest possible Package C-State
and devices should be in low power mode. For example, on Skylake SoC
the deepest Package C-State is Package C10 or PC10. Suspend to idle
flow generally leads to PC10 state but PC10 state may not be sufficient
for realizing the platform wide power potential which SLP_S0 signal
assertion can provide.
SLP_S0 signal is often connected to the Embedded Controller (EC) and the
Power Management IC (PMIC) for other platform power management related
optimizations.
In general, SLP_S0 assertion == PC10 + PCH low power mode + ModPhy Lanes
power gated + PLL Idle.
As part of this driver, a mechanism to read the SLP_S0_RESIDENCY is exposed
as an API and also debugfs features are added to indicate SLP_S0 signal
assertion residency in microseconds.
echo freeze > /sys/power/state
wake the system
cat /sys/kernel/debug/pmc_core/slp_s0_residency_usec
Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@intel.com>
Signed-off-by: Vishwanath Somayaji <vishwanath.somayaji@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Some BIOSes unconditionally send an ACPI notification to RBTN when the
system is resuming from suspend. This makes dell-rbtn send an input
event to userspace as if a function key was pressed. Prevent this by
ignoring all the notifications received while the device is suspended.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=106031
Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Tested-by: Alex Hung <alex.hung@canonical.com>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Override default LED class suspend/resume handles, by keeping track of
the brightness level before suspending so that it can be automatically
restored on resume by calling default resume handler.
Signed-off-by: Marco Trevisan (Treviño) <mail@3v1n0.net>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
aux0_show and aux1_show consists of almost identical code. Pull that
into a common helper and make them thin wrappers. Similarly for
_store.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Asus Zenbook ux31a is providing ACPI0008 interface for ALS
(Ambient Light Sensor), which is accessible for OS => Win 7.
This sensor can be used with iio/acpi-als driver.
Since it is disabled by default, we should use asus-wmi
interface to enable it.
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
My patch to the ideapad-laptop driver to get the ESC key working on the
Yoga 1170 (Yoga 3) failed to do the same for the following model, the
Lenovo Yoga 700.
Denis Gordienko managed to get it working by adding another GUID for the
new WMI interface. I have adapted his patch to normal coding style
and simplified it a bit for inclusion, but this patch is currently
untested.
Link: https://forums.lenovo.com/t5/Lenovo-Yoga-Series-Notebooks/YOGA-3-14-How-to-reclaim-my-Esc-key-and-permanently-disable/m-p/3317499
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Denis Gordienko <denis.gordienko.mail@gmail.com>
[dvhart: Whitespace cleanup, static const char *const array declaration]
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Microsoft Surface Book has a tablet mode button. Print another message
once on this event instead of repeating "Unknown event...".
Unfortunately, proper support involves the _DSM method, which is not a
discoverable interface. Just print a warning for now.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Really sorry about this late pull request. It looks like at the time I
sent my pull request for v4.7 there was some conflict or other issue
which caused my script to stop merging the ASoC branches at some point
after the HDMI changes.
It's all specific driver updates, including:
- New drivers for MAX98371 and TAS5720.
- SPI support for TLV320AIC32x4.
- TDM support for STI Uniperf IPs.
This code should all have been in -next prior to the merge window apart
from some fixes, it dropped out on the 18th.
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Merge tag 'asoc-v4.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v4.7 part 2
Really sorry about this late pull request. It looks like at the time I
sent my pull request for v4.7 there was some conflict or other issue
which caused my script to stop merging the ASoC branches at some point
after the HDMI changes.
It's all specific driver updates, including:
- New drivers for MAX98371 and TAS5720.
- SPI support for TLV320AIC32x4.
- TDM support for STI Uniperf IPs.
This code should all have been in -next prior to the merge window apart
from some fixes, it dropped out on the 18th.
I stumbled multiple times over 'return_i2c_dev', especially before the
actual 'return res'. It makes the code hard to read, so reanme the
function to 'put_i2c_dev' which also better matches 'get_free_i2c_dev'.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
