Currently the error checking logic in the dp_debug module could
pass zero to PTR_ERR and it causes the below kbot warnings:
drivers/gpu/drm/msm/dp/dp_debug.c:378 dp_debug_init()
warn: passing zero to 'PTR_ERR'
drivers/gpu/drm/msm/dp/dp_debug.c:387 dp_debug_init()
warn: passing zero to 'PTR_ERR'
drivers/gpu/drm/msm/dp/dp_debug.c:396 dp_debug_init()
warn: passing zero to 'PTR_ERR'
drivers/gpu/drm/msm/dp/dp_debug.c:405 dp_debug_init()
warn: passing zero to 'PTR_ERR'
Debugfs functions are not supposed to be checked in the normal
case so delete this code. Also it silences the above Smatch
warnings that we're checking for NULL when these functions only
return error pointers.
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1614971839-2686-3-git-send-email-abhinavk@codeaurora.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Fix an incorrect NULL check reported by kbot in the MSM DP driver
smatch warnings:
drivers/gpu/drm/msm/dp/dp_hpd.c:37 dp_hpd_connect()
error: we previously assumed 'hpd_priv->dp_cb' could be null
(see line 37)
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1614971839-2686-2-git-send-email-abhinavk@codeaurora.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Fix a couple of indentation warnings reported by
kbot across MSM DP driver:
New smatch warnings:
drivers/gpu/drm/msm/dp/dp_debug.c:229 dp_test_data_show()
warn: inconsistent indenting
drivers/gpu/drm/msm/dp/dp_power.c:203 dp_power_clk_enable()
warn: inconsistent indenting
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1614971839-2686-1-git-send-email-abhinavk@codeaurora.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
The MSM8996 core_mmss clock was commented out due to some
strange issues that others were experiencing.
At least SONY Tone family is working perfectly fine with this clock
declared and gets it up and running without any error.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210228124328.136397-1-konrad.dybcio@somainline.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Set the flag vblank_disable_immediate = true to turn off vblank irqs
immediately as soon as drm_vblank_put is requested so that there are
no irqs triggered during idle state. This will reduce cpu wakeups
and help in power saving.
To enable vblank_disable_immediate flag the underlying KMS driver
needs to support high precision vblank timestamping and also a
reliable way of providing vblank counter which is incrementing
at the leading edge of vblank.
This patch also brings in changes to support vblank_disable_immediate
requirement in dpu driver.
Changes in v1:
- Specify reason to add vblank timestamp support. (Rob).
- Add changes to provide vblank counter from dpu driver.
Changes in v2:
- Fix warn stack reported by Rob Clark with v2 patch.
Changes in v3:
- Move back to HW frame counter (Rob).
Changes in v4:
- Frame count mismatch was causing a DRM WARN stack spew.
DPU HW will increment the frame count at the end of
the sync, where as vblank will be triggered at the
fetch_start counter which is calculated as v_total - vfp.
This is to start fetching early for panels with low
vbp w.r.t hw latency lines.
Add logic to detect the line count if it falls between
vactive and v_total then return incremented frame count value.
Signed-off-by: Kalyan Thota <kalyan_t@codeaurora.org>
Link: https://lore.kernel.org/r/1613651746-12783-1-git-send-email-kalyan_t@codeaurora.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Performance counts, and ALWAYS_ON counters used for capturing GPU
timestamps, lose their state across suspend/resume cycles. Userspace
tooling for performance monitoring needs to be aware of this. For
example, after a suspend userspace needs to recalibrate it's offset
between CPU and GPU time.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Jordan Crouse <jordan@cosmicpenguin.net>
Link: https://lore.kernel.org/r/20210325012358.1759770-3-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
We were not programing the correct bit while clearing the perfcounter oob.
So, clear it correctly using the new 'clear' bit. This fixes the below
error:
[drm:a6xx_gmu_set_oob] *ERROR* Timeout waiting for GMU OOB set PERFCOUNTER: 0x80000000
Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
Link: https://lore.kernel.org/r/1617630433-36506-1-git-send-email-akhilpo@codeaurora.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
The driver already has support for sm8150/sm8250, but the compatibles were
never added.
Also inverse the non-mdp4 condition in add_display_components() to avoid
having to check every new compatible in the condition.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210329120051.3401567-4-dmitry.baryshkov@linaro.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
After spending a non-negligible time trying to figure out why
dpu_kms_init() would dereference a NULL dpu_kms->pdev, it turns out that
in addition to adding the new compatible to the msm_drv of_match_table
one also need to teach add_display_components() to register the child
nodes - which includes the DPU platform_device.
Replace the open coded test for compatibles with a check against the
match data of the mdss device to save others this trouble in the future.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210317025634.3987908-1-bjorn.andersson@linaro.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
There is a spelling mistake in debugfs gem stats. Fix it. Also
re-align output to cater for the extra 1 character.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210406133939.425987-1-colin.king@canonical.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
The last patch lost the breakdown of active vs inactive GEM objects in
$debugfs/gem. But we can add some better stats to summarize not just
active vs inactive, but also purgable/purged to make up for that.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20210401012722.527712-5-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
In normal cases the gem obj lock is acquired first before mm_lock. The
exception is iterating the various object lists. In the shrinker path,
deadlock is avoided by using msm_gem_trylock() and skipping over objects
that cannot be locked. But for debugfs the straightforward thing is to
split things out into a separate list of all objects protected by it's
own lock.
Fixes: d984457b31 ("drm/msm: Add priv->mm_lock to protect active/inactive lists")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20210401012722.527712-4-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
When the system is under heavy memory pressure, we can end up with lots
of concurrent calls into the shrinker. Keeping a running tab on what we
can shrink avoids grabbing a lock in shrinker->count(), and avoids
shrinker->scan() getting called when not profitable.
Also, we can keep purged objects in their own list to avoid re-traversing
them to help cut down time in the critical section further.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20210401012722.527712-3-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Unused since commit c951a9b284 ("drm/msm: Remove msm_gem_free_work")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20210401012722.527712-2-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Update the 3d merge as active in the data path only if
the hw block is selected in the configuration.
Reported-by: Stephen Boyd <swboyd@chromium.org>
Fixes: 73bfb790ac ("msm:disp:dpu1: setup display datapath for SC7180 target")
Signed-off-by: Kalyan Thota <kalyan_t@codeaurora.org>
Message-Id: <1617364493-13518-1-git-send-email-kalyan_t@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
I suppose the microcode version check for a650 is incorrect. It checks
for the version 1.95, while the firmware released have major version of 0:
0.91 (vulnerable), 0.99 (fixing the issue).
Lower version requirements to accept firmware 0.99.
Fixes: 8490f02a3c ("drm/msm: a6xx: Make sure the SQE microcode is safe")
Cc: Akhil P Oommen <akhilpo@codeaurora.org>
Cc: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Jordan Crouse <jordan@cosmicpenguin.net>
Message-Id: <20210331140223.3771449-1-dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
They were reading a counter that was configured to ALWAYS_COUNT (ie.
cycles that the GPU is doing something) rather than ALWAYS_ON. This
isn't the thing that userspace is looking for.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Jordan Crouse <jordan@cosmicpenguin.net>
Message-Id: <20210325012358.1759770-2-robdclark@gmail.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Commit 7bf168c8fe ("drm/msm: Fix speed-bin support not to
access outside valid memory"), reworked the nvmem reading of
"speed_bin", but in doing so dropped handling of the -ENOENT
case which was previously documented as "fine".
That change resulted in the db845c board display to fail to
start, with the following error:
adreno 5000000.gpu: [drm:a6xx_gpu_init] *ERROR* failed to read speed-bin (-2). Some OPPs may not be supported by hardware
Thus, this patch simply re-adds the ENOENT handling so the lack
of the speed_bin entry isn't fatal for display, and gets things
working on db845c.
Cc: Rob Clark <robdclark@gmail.com>
Cc: Sean Paul <sean@poorly.run>
Cc: Jordan Crouse <jcrouse@codeaurora.org>
Cc: Eric Anholt <eric@anholt.net>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: freedreno@lists.freedesktop.org
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: YongQin Liu <yongqin.liu@linaro.org>
Reported-by: YongQin Liu <yongqin.liu@linaro.org>
Fixes: 7bf168c8fe ("drm/msm: Fix speed-bin support not to access outside valid memory")
Signed-off-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Akhil P Oommen <akhilpo@codeaurora.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Message-Id: <20210330013408.2532048-1-john.stultz@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
We should set the platform device's driver data to NULL here so that
code doesn't assume the struct drm_device pointer is valid when it could
have been destroyed. The lifetime of this pointer is managed by a kref
but when msm_drm_init() fails we call drm_dev_put() on the pointer which
will free the pointer's memory. This driver uses the component model, so
there's sort of two "probes" in this file, one for the platform device
i.e. msm_pdev_probe() and one for the component i.e. msm_drm_bind(). The
msm_drm_bind() code is using the platform device's driver data to store
struct drm_device so the two functions are intertwined.
This relationship becomes a problem for msm_pdev_shutdown() when it
tests the NULL-ness of the pointer to see if it should call
drm_atomic_helper_shutdown(). The NULL test is a proxy check for if the
pointer has been freed by kref_put(). If the drm_device has been
destroyed, then we shouldn't call the shutdown helper, and we know that
is the case if msm_drm_init() failed, therefore set the driver data to
NULL so that this pointer liveness is tracked properly.
Fixes: 9d5cbf5fe4 ("drm/msm: add shutdown support for display platform_driver")
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Krishna Manikandan <mkrishn@codeaurora.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Message-Id: <20210325212822.3663144-1-swboyd@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
DPU runtime resume will request for a min vote on the AXI bus as
it is a necessary step before turning ON the AXI clock.
The change does below
1) Move the icc path set before requesting runtime get_sync.
2) remove the dependency of hw catalog for min ib vote
as it is initialized at a later point.
Signed-off-by: Kalyan Thota <kalyan_t@codeaurora.org>
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
When putting iMX5 into suspend, the following flow is
observed:
[ 70.023427] [<c07755f0>] (msm_atomic_commit_tail) from [<c06e7218>]
(commit_tail+0x9c/0x18c)
[ 70.031890] [<c06e7218>] (commit_tail) from [<c0e2920c>]
(drm_atomic_helper_commit+0x1a0/0x1d4)
[ 70.040627] [<c0e2920c>] (drm_atomic_helper_commit) from
[<c06e74d4>] (drm_atomic_helper_disable_all+0x1c4/0x1d4)
[ 70.050913] [<c06e74d4>] (drm_atomic_helper_disable_all) from
[<c0e2943c>] (drm_atomic_helper_suspend+0xb8/0x170)
[ 70.061198] [<c0e2943c>] (drm_atomic_helper_suspend) from
[<c06e84bc>] (drm_mode_config_helper_suspend+0x24/0x58)
In the i.MX5 case, priv->kms is not populated (as i.MX5 does not use any
of the Qualcomm display controllers), causing a NULL pointer
dereference in msm_atomic_commit_tail():
[ 24.268964] 8<--- cut here ---
[ 24.274602] Unable to handle kernel NULL pointer dereference at
virtual address 00000000
[ 24.283434] pgd = (ptrval)
[ 24.286387] [00000000] *pgd=ca212831
[ 24.290788] Internal error: Oops: 17 [#1] SMP ARM
[ 24.295609] Modules linked in:
[ 24.298777] CPU: 0 PID: 197 Comm: init Not tainted 5.11.0-rc2-next-20210111 #333
[ 24.306276] Hardware name: Freescale i.MX53 (Device Tree Support)
[ 24.312442] PC is at msm_atomic_commit_tail+0x54/0xb9c
[ 24.317743] LR is at commit_tail+0xa4/0x1b0
Fix the problem by calling drm_mode_config_helper_suspend/resume()
only when priv->kms is available.
Fixes: ca8199f134 ("drm/msm/dpu: ensure device suspend happens during PM sleep")
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>
We have seen a couple cases where low memory situations cause something
bad to happen, followed by a flood of these messages obscuring the root
cause. Lets ratelimit the dmesg spam so that next time it happens we
don't lose the kernel traces leading up to this.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
While passing the A530-specific lm_setup func to A530 and A540
to !A530 was fine back when only these two were supported, it
certainly is not a good idea to send A540 specifics to smaller
GPUs like A508 and friends.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
In commit 9fc418430c ("drm/msm/dp: unplug interrupt missed after
irq_hpd handler") we dropped a reset of the aux phy during aux transfers
because resetting the phy during active communication caused us to miss
an hpd irq in some cases. Unfortunately, we also dropped the part of the
code that changes the aux phy tuning when an aux transfer fails due to a
timeout. That part of the code was calling into the phy driver to
reconfigure the aux TX swing controls, working around poor channel
quality. Let's restore this phy setting code so that aux channel
communication is more reliable.
Cc: Kuogee Hsieh <khsieh@codeaurora.org>
Fixes: 9fc418430c ("drm/msm/dp: unplug interrupt missed after irq_hpd handler")
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
The PLL_LOCKDET_RATE_1 was being programmed with a hardcoded value
directly, but the same value was also being specified in the
dsi_pll_regs struct pll_lockdet_rate variable: let's use it!
Based on 362cadf34b ("drm/msm/dsi_pll_10nm: Fix variable usage for
pll_lockdet_rate")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
The number of fractional registers bits is known and already set in
the frac_bits variable of the dsi_pll_config struct here in 7nm:
remove the TODO by simply using that variable. This is a copy of
196145eb1a ("drm/msm/dsi_pll_10nm: Solve TODO for multiplier frac_bits
assignment").
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Fix setting min/max DSI PLL rate for the V4.1 7nm DSI PLL (used on
sm8250). Current code checks for pll->type before it is set (as it is
set in the msm_dsi_pll_init() after calling device-specific functions.
Cc: Jonathan Marek <jonathan@marek.ca>
Fixes: 1ef7c99d14 ("drm/msm/dsi: add support for 7nm DSI PHY/PLL")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Doing a
prctl(PR_SET_MM, PR_SET_MM_AUXV, addr, 1);
will copy 1 byte from userspace to (quite big) on-stack array
and then stash everything to mm->saved_auxv.
AT_NULL terminator will be inserted at the very end.
/proc/*/auxv handler will find that AT_NULL terminator
and copy original stack contents to userspace.
This devious scheme requires CAP_SYS_RESOURCE.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Make the GENERIC_IRQ_MULTI_HANDLER configuration correct
- Add a missing DT compatible string fir tge Ingenic driver
- Remove the pointless debugfs_file pointer from struct irqdomain
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Merge tag 'irq-urgent-2021-03-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"A set of irqchip updates:
- Make the GENERIC_IRQ_MULTI_HANDLER configuration correct
- Add a missing DT compatible string for the Ingenic driver
- Remove the pointless debugfs_file pointer from struct irqdomain"
* tag 'irq-urgent-2021-03-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/ingenic: Add support for the JZ4760
dt-bindings/irq: Add compatible string for the JZ4760B
irqchip: Do not blindly select CONFIG_GENERIC_IRQ_MULTI_HANDLER
ARM: ep93xx: Select GENERIC_IRQ_MULTI_HANDLER directly
irqdomain: Remove debugfs_file from struct irq_domain
lack of reevaluation of the timers which expire in softirq context under
certain circumstances, e.g. when the clock was set.
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Merge tag 'timers-urgent-2021-03-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A single fix in for hrtimers to prevent an interrupt storm caused by
the lack of reevaluation of the timers which expire in softirq context
under certain circumstances, e.g. when the clock was set"
* tag 'timers-urgent-2021-03-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
hrtimer: Update softirq_expires_next correctly after __hrtimer_get_next_event()
- Prevent a NULL pointer dereference in the migration_stop_cpu()
mechanims
- Prevent self concurrency of affine_move_task()
- Small fixes and cleanups related to task migration/affinity setting
- Ensure that sync_runqueues_membarrier_state() is invoked on the current
CPU when it is in the cpu mask
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Merge tag 'sched-urgent-2021-03-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Thomas Gleixner:
"A set of scheduler updates:
- Prevent a NULL pointer dereference in the migration_stop_cpu()
mechanims
- Prevent self concurrency of affine_move_task()
- Small fixes and cleanups related to task migration/affinity setting
- Ensure that sync_runqueues_membarrier_state() is invoked on the
current CPU when it is in the cpu mask"
* tag 'sched-urgent-2021-03-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/membarrier: fix missing local execution of ipi_sync_rq_state()
sched: Simplify set_affinity_pending refcounts
sched: Fix affine_move_task() self-concurrency
sched: Optimize migration_cpu_stop()
sched: Collate affine_move_task() stoppers
sched: Simplify migration_cpu_stop()
sched: Fix migration_cpu_stop() requeueing
paravirt changes which modified arch_local_irq_restore not to use popf.
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Merge tag 'objtool-urgent-2021-03-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fix from Thomas Gleixner:
"A single objtool fix to handle the PUSHF/POPF validation correctly for
the paravirt changes which modified arch_local_irq_restore not to use
popf"
* tag 'objtool-urgent-2021-03-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool,x86: Fix uaccess PUSHF/POPF validation
- A fix for the static_call mechanism so it handles unaligned
addresses correctly.
- Make u64_stats_init() a macro so every instance gets a seperate lockdep
key.
- Make seqcount_latch_init() a macro as well to preserve the static
variable which is used for the lockdep key.
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Merge tag 'locking-urgent-2021-03-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Thomas Gleixner:
"A couple of locking fixes:
- A fix for the static_call mechanism so it handles unaligned
addresses correctly.
- Make u64_stats_init() a macro so every instance gets a seperate
lockdep key.
- Make seqcount_latch_init() a macro as well to preserve the static
variable which is used for the lockdep key"
* tag 'locking-urgent-2021-03-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
seqlock,lockdep: Fix seqcount_latch_init()
u64_stats,lockdep: Fix u64_stats_init() vs lockdep
static_call: Fix the module key fixup
properly handle PID/TID for large PEBS.
- Handle the case properly when there's no PMU and therefore return an
empty list of perf MSRs for VMX to switch instead of reading random
garbage from the stack.
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Merge tag 'perf_urgent_for_v5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Borislav Petkov:
- Make sure PMU internal buffers are flushed for per-CPU events too and
properly handle PID/TID for large PEBS.
- Handle the case properly when there's no PMU and therefore return an
empty list of perf MSRs for VMX to switch instead of reading random
garbage from the stack.
* tag 'perf_urgent_for_v5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/perf: Use RET0 as default for guest_get_msrs to handle "no PMU" case
perf/x86/intel: Set PERF_ATTACH_SCHED_CB for large PEBS and LBR
perf/core: Flush PMU internal buffers for per-CPU events
Fix an oversight in the handling of the UEFI 2.8 EFI_RT_PROPERTIES_TABLE,
which was added v5.10, but failed to take the SetVirtualAddressMap() RT
service into account.
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Merge tag 'efi-urgent-for-v5.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fix from Ard Biesheuvel via Borislav Petkov:
"Fix an oversight in the handling of EFI_RT_PROPERTIES_TABLE, which was
added v5.10, but failed to take the SetVirtualAddressMap() RT service
into account"
* tag 'efi-urgent-for-v5.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi: stub: omit SetVirtualAddressMap() if marked unsupported in RT_PROP table
pointer in NMI is not coming from the syscall gap, correctly track IRQ
states in the #VC handler and access user insn bytes atomically in same
handler as latter cannot sleep.
- Balance 32-bit fast syscall exit path to do the proper work on exit
and thus not confuse audit and ptrace frameworks.
- Two fixes for the ORC unwinder going "off the rails" into KASAN
redzones and when ORC data is missing.
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Merge tag 'x86_urgent_for_v5.12_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- A couple of SEV-ES fixes and robustifications: verify usermode stack
pointer in NMI is not coming from the syscall gap, correctly track
IRQ states in the #VC handler and access user insn bytes atomically
in same handler as latter cannot sleep.
- Balance 32-bit fast syscall exit path to do the proper work on exit
and thus not confuse audit and ptrace frameworks.
- Two fixes for the ORC unwinder going "off the rails" into KASAN
redzones and when ORC data is missing.
* tag 'x86_urgent_for_v5.12_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sev-es: Use __copy_from_user_inatomic()
x86/sev-es: Correctly track IRQ states in runtime #VC handler
x86/sev-es: Check regs->sp is trusted before adjusting #VC IST stack
x86/sev-es: Introduce ip_within_syscall_gap() helper
x86/entry: Fix entry/exit mismatch on failed fast 32-bit syscalls
x86/unwind/orc: Silence warnings caused by missing ORC data
x86/unwind/orc: Disable KASAN checking in the ORC unwinder, part 2
Fix wrong instruction encoding for lis in ppc_function_entry(), which could
potentially lead to missed kprobes.
Fix SET_FULL_REGS on 32-bit and 64e, which prevented ptrace of non-volatile GPRs
immediately after exec.
Clean up a missed SRR specifier in the recent interrupt rework.
Don't treat unrecoverable_exception() as an interrupt handler, it's called from
other handlers so shouldn't do the interrupt entry/exit accounting itself.
Fix build errors caused by missing declaration of [en/dis]able_kernel_vsx().
Thanks to Christophe Leroy, Daniel Axtens, Geert Uytterhoeven, Jiri Olsa, Naveen
N. Rao, Nicholas Piggin.
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Merge tag 'powerpc-5.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Some more powerpc fixes for 5.12:
- Fix wrong instruction encoding for lis in ppc_function_entry(),
which could potentially lead to missed kprobes.
- Fix SET_FULL_REGS on 32-bit and 64e, which prevented ptrace of
non-volatile GPRs immediately after exec.
- Clean up a missed SRR specifier in the recent interrupt rework.
- Don't treat unrecoverable_exception() as an interrupt handler, it's
called from other handlers so shouldn't do the interrupt entry/exit
accounting itself.
- Fix build errors caused by missing declarations for
[en/dis]able_kernel_vsx().
Thanks to Christophe Leroy, Daniel Axtens, Geert Uytterhoeven, Jiri
Olsa, Naveen N. Rao, and Nicholas Piggin"
* tag 'powerpc-5.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/traps: unrecoverable_exception() is not an interrupt handler
powerpc: Fix missing declaration of [en/dis]able_kernel_vsx()
powerpc/64s/exception: Clean up a missed SRR specifier
powerpc: Fix inverted SET_FULL_REGS bitop
powerpc/64s: Use symbolic macros for function entry encoding
powerpc/64s: Fix instruction encoding for lis in ppc_function_entry()
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"More fixes for ARM and x86"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: LAPIC: Advancing the timer expiration on guest initiated write
KVM: x86/mmu: Skip !MMU-present SPTEs when removing SP in exclusive mode
KVM: kvmclock: Fix vCPUs > 64 can't be online/hotpluged
kvm: x86: annotate RCU pointers
KVM: arm64: Fix exclusive limit for IPA size
KVM: arm64: Reject VM creation when the default IPA size is unsupported
KVM: arm64: Ensure I-cache isolation between vcpus of a same VM
KVM: arm64: Don't use cbz/adr with external symbols
KVM: arm64: Fix range alignment when walking page tables
KVM: arm64: Workaround firmware wrongly advertising GICv2-on-v3 compatibility
KVM: arm64: Rename __vgic_v3_get_ich_vtr_el2() to __vgic_v3_get_gic_config()
KVM: arm64: Don't access PMSELR_EL0/PMUSERENR_EL0 when no PMU is available
KVM: arm64: Turn kvm_arm_support_pmu_v3() into a static key
KVM: arm64: Fix nVHE hyp panic host context restore
KVM: arm64: Avoid corrupting vCPU context register in guest exit
KVM: arm64: nvhe: Save the SPE context early
kvm: x86: use NULL instead of using plain integer as pointer
KVM: SVM: Connect 'npt' module param to KVM's internal 'npt_enabled'
KVM: x86: Ensure deadline timer has truly expired before posting its IRQ
Merge misc fixes from Andrew Morton:
"28 patches.
Subsystems affected by this series: mm (memblock, pagealloc, hugetlb,
highmem, kfence, oom-kill, madvise, kasan, userfaultfd, memcg, and
zram), core-kernel, kconfig, fork, binfmt, MAINTAINERS, kbuild, and
ia64"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (28 commits)
zram: fix broken page writeback
zram: fix return value on writeback_store
mm/memcg: set memcg when splitting page
mm/memcg: rename mem_cgroup_split_huge_fixup to split_page_memcg and add nr_pages argument
ia64: fix ptrace(PTRACE_SYSCALL_INFO_EXIT) sign
ia64: fix ia64_syscall_get_set_arguments() for break-based syscalls
mm/userfaultfd: fix memory corruption due to writeprotect
kasan: fix KASAN_STACK dependency for HW_TAGS
kasan, mm: fix crash with HW_TAGS and DEBUG_PAGEALLOC
mm/madvise: replace ptrace attach requirement for process_madvise
include/linux/sched/mm.h: use rcu_dereference in in_vfork()
kfence: fix reports if constant function prefixes exist
kfence, slab: fix cache_alloc_debugcheck_after() for bulk allocations
kfence: fix printk format for ptrdiff_t
linux/compiler-clang.h: define HAVE_BUILTIN_BSWAP*
MAINTAINERS: exclude uapi directories in API/ABI section
binfmt_misc: fix possible deadlock in bm_register_write
mm/highmem.c: fix zero_user_segments() with start > end
hugetlb: do early cow when page pinned on src mm
mm: use is_cow_mapping() across tree where proper
...
- More compatible strings for the Ingenic irqchip (introducing the
JZ4760B SoC)
- Select GENERIC_IRQ_MULTI_HANDLER on the ARM ep93xx platform
- Drop all GENERIC_IRQ_MULTI_HANDLER selections from the irqchip
Kconfig, now relying on the architecture to get it right
- Drop the debugfs_file field from struct irq_domain, now that
debugfs can track things on its own
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Merge tag 'irqchip-fixes-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip fixes from Marc Zyngier:
- More compatible strings for the Ingenic irqchip (introducing the
JZ4760B SoC)
- Select GENERIC_IRQ_MULTI_HANDLER on the ARM ep93xx platform
- Drop all GENERIC_IRQ_MULTI_HANDLER selections from the irqchip
Kconfig, now relying on the architecture to get it right
- Drop the debugfs_file field from struct irq_domain, now that
debugfs can track things on its own
Here are some small misc/char driver fixes for 5.12-rc3 to resolve some
reported problems:
- habanalabs driver fixes
- Acrn build fixes (reported many times)
- pvpanic module table export fix
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small misc/char driver fixes to resolve some reported
problems:
- habanalabs driver fixes
- Acrn build fixes (reported many times)
- pvpanic module table export fix
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
misc/pvpanic: Export module FDT device table
misc: fastrpc: restrict user apps from sending kernel RPC messages
virt: acrn: Correct type casting of argument of copy_from_user()
virt: acrn: Use EPOLLIN instead of POLLIN
virt: acrn: Use vfs_poll() instead of f_op->poll()
virt: acrn: Make remove_cpu sysfs invisible with !CONFIG_HOTPLUG_CPU
cpu/hotplug: Fix build error of using {add,remove}_cpu() with !CONFIG_SMP
habanalabs: fix debugfs address translation
habanalabs: Disable file operations after device is removed
habanalabs: Call put_pid() when releasing control device
drivers: habanalabs: remove unused dentry pointer for debugfs files
habanalabs: mark hl_eq_inc_ptr() as static
Here are some small staging driver fixes for reported problems for
5.12-rc3. They include:
- wfx header file cleanup patch reverted as it could cause
problems
- comedi driver endian fixes
- buffer overflow problems for staging wifi drivers
- build dependency issue for rtl8192e driver
All have been in linux-next for a while with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are some small staging driver fixes for reported problems. They
include:
- wfx header file cleanup patch reverted as it could cause problems
- comedi driver endian fixes
- buffer overflow problems for staging wifi drivers
- build dependency issue for rtl8192e driver
All have been in linux-next for a while with no reported problems"
* tag 'staging-5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (23 commits)
Revert "staging: wfx: remove unused included header files"
staging: rtl8188eu: prevent ->ssid overflow in rtw_wx_set_scan()
staging: rtl8188eu: fix potential memory corruption in rtw_check_beacon_data()
staging: rtl8192u: fix ->ssid overflow in r8192_wx_set_scan()
staging: comedi: pcl726: Use 16-bit 0 for interrupt data
staging: comedi: ni_65xx: Use 16-bit 0 for interrupt data
staging: comedi: ni_6527: Use 16-bit 0 for interrupt data
staging: comedi: comedi_parport: Use 16-bit 0 for interrupt data
staging: comedi: amplc_pc236_common: Use 16-bit 0 for interrupt data
staging: comedi: pcl818: Fix endian problem for AI command data
staging: comedi: pcl711: Fix endian problem for AI command data
staging: comedi: me4000: Fix endian problem for AI command data
staging: comedi: dmm32at: Fix endian problem for AI command data
staging: comedi: das800: Fix endian problem for AI command data
staging: comedi: das6402: Fix endian problem for AI command data
staging: comedi: adv_pci1710: Fix endian problem for AI command data
staging: comedi: addi_apci_1500: Fix endian problem for command sample
staging: comedi: addi_apci_1032: Fix endian problem for COS sample
staging: ks7010: prevent buffer overflow in ks_wlan_set_scan()
staging: rtl8712: Fix possible buffer overflow in r8712_sitesurvey_cmd
...
