linux-2.6-block.git
10 months agodrm/amdgpu: fix AGP addressing when GART is not at 0
Alex Deucher [Fri, 10 Nov 2023 14:39:18 +0000 (09:39 -0500)]
drm/amdgpu: fix AGP addressing when GART is not at 0

This worked by luck if the GART aperture ended up at 0.  When
we ended up moving GART on some chips, the GART aperture ended
up offsetting the AGP address since the resource->start is
a GART offset, not an MC address.  Fix this by moving the AGP
address setup into amdgpu_bo_gpu_offset_no_check().

v2: check mem_type before checking agp
v3: check if the ttm bo has a ttm_tt allocated yet

Fixes: 67318cb84341 ("drm/amdgpu/gmc11: set gart placement GC11")
Tested-by: Mario Limonciello <mario.limonciello@amd.com>
Reported-by: Jesse Zhang <Jesse.Zhang@amd.com>
Reported-by: Yifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: christian.koenig@amd.com
Cc: mario.limonciello@amd.com
10 months agodrm/amd/display: update dcn315 lpddr pstate latency
Dmytro Laktyushkin [Fri, 3 Nov 2023 18:55:37 +0000 (14:55 -0400)]
drm/amd/display: update dcn315 lpddr pstate latency

[WHY/HOW]
Increase the pstate latency to improve ac/dc transition

Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: fix ABM disablement
Hamza Mahfooz [Wed, 22 Nov 2023 19:50:34 +0000 (14:50 -0500)]
drm/amd/display: fix ABM disablement

On recent versions of DMUB firmware, if we want to completely disable
ABM we have to pass ABM_LEVEL_IMMEDIATE_DISABLE as the requested ABM
level to DMUB. Otherwise, LCD eDP displays are unable to reach their
maximum brightness levels. So, to fix this whenever the user requests an
ABM level of 0 pass ABM_LEVEL_IMMEDIATE_DISABLE to DMUB instead. Also,
to keep the user's experience consistent map ABM_LEVEL_IMMEDIATE_DISABLE
to 0 when a user tries to read the requested ABM level.

Cc: stable@vger.kernel.org # 6.1+
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Fix black screen on video playback with embedded panel
Sung Joon Kim [Fri, 10 Nov 2023 16:33:45 +0000 (11:33 -0500)]
drm/amd/display: Fix black screen on video playback with embedded panel

[why]
We have dynamic power control in driver but
should be ignored when power is forced on.

[how]
Bypass any power control when it's forced on.

Cc: stable@vger.kernel.org
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Sung Joon Kim <sungkim@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Fix conversions between bytes and KB
Taimur Hassan [Fri, 10 Nov 2023 15:15:28 +0000 (10:15 -0500)]
drm/amd/display: Fix conversions between bytes and KB

[Why]
There are a number of instances where we convert HostVMMinPageSize or
GPUVMMinPageSize from bytes to KB by dividing (rather than multiplying) and
vice versa.
Additionally, in some cases, a parameter is passed through DML in KB but
later checked as if it were in bytes.

Cc: stable@vger.kernel.org
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Taimur Hassan <syed.hassan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amdkfd: Use common function for IP version check
Mukul Joshi [Wed, 22 Nov 2023 20:17:22 +0000 (15:17 -0500)]
drm/amdkfd: Use common function for IP version check

KFD_GC_VERSION was recently updated to use a new function
for IP version checks. As a result, use KFD_GC_VERSION as
the common function for all IP version checks in KFD.

Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Remove config update
Taimur Hassan [Fri, 10 Nov 2023 15:06:09 +0000 (10:06 -0500)]
drm/amd/display: Remove config update

[Why]
Prevent overwrite of dc->config.use_default_clock_table, as it should be
pre-configured.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Taimur Hassan <syed.hassan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Update DCN35 clock table policy
Nicholas Kazlauskas [Fri, 3 Nov 2023 22:07:11 +0000 (18:07 -0400)]
drm/amd/display: Update DCN35 clock table policy

[Why]
The new table doesn't have an implicit mapping between Fclk SOC voltage
and MemClk and it currently builds the table off of number of Fclk
states rather than DcfClock states.

The DML table in use is not correct for functionality or power and
does not align with our existing policies for DCN3x.

[How]
Build the table based on DcfClock with the following assumptions:

1. Raising Soc voltage is the most expensive operation, so assume that
running at max DispClock or DppClock is preferable.

2. Assume that we can run at max Fclk / MemClk at any state, but
restrict the maximum state to the very last entry in the table as the
worst case scenario.

3. Assume that Fclk always has a 2x multiplier on DcfClock unless the
table specifies something lower.

Reviewed-by: Taimur Hassan <syed.hassan@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: force toggle rate wa for first link training for a retimer
Zhongwei [Wed, 8 Nov 2023 08:34:36 +0000 (16:34 +0800)]
drm/amd/display: force toggle rate wa for first link training for a retimer

[WHY]
Handover from DMUB to driver does not perform link rate toggle.
It might cause link training failure for boot up.

[HOW]
Force toggle rate wa for first link train.
link->vendor_specific_lttpr_link_rate_wa should be zero then.

Cc: stable@vger.kernel.org # 6.1+
Reviewed-by: Michael Strauss <michael.strauss@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Zhongwei <zhongwei.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amdgpu: correct the amdgpu runtime dereference usage count
Prike Liang [Wed, 8 Nov 2023 06:38:29 +0000 (14:38 +0800)]
drm/amdgpu: correct the amdgpu runtime dereference usage count

Fix the amdgpu runpm dereference usage count.

Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
10 months agodrm/amd/display: Update min Z8 residency time to 2100 for DCN314
Nicholas Kazlauskas [Wed, 8 Nov 2023 15:59:00 +0000 (10:59 -0500)]
drm/amd/display: Update min Z8 residency time to 2100 for DCN314

[Why]
Some panels with residency period of 2054 exhibit flickering with
Z8 at the end of the frame.

[How]
As a workaround, increase the limit to block these panels.

Cc: stable@vger.kernel.org # 6.1+
Reviewed-by: Syed Hassan <syed.hassan@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Remove min_dst_y_next_start check for Z8
Nicholas Kazlauskas [Wed, 8 Nov 2023 15:55:53 +0000 (10:55 -0500)]
drm/amd/display: Remove min_dst_y_next_start check for Z8

[Why]
Flickering occurs on DRR supported panels when engaged in DRR due to
min_dst_y_next becoming larger than the frame size itself.

[How]
In general, we should be able to enter Z8 when this is engaged but it
might be a net power loss even if the calculation wasn't bugged.

Don't support enabling Z8 during the DRR region.

Cc: stable@vger.kernel.org # 6.1+
Reviewed-by: Syed Hassan <syed.hassan@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amdgpu: fix memory overflow in the IB test
Tim Huang [Tue, 21 Nov 2023 03:06:51 +0000 (11:06 +0800)]
drm/amdgpu: fix memory overflow in the IB test

Fix a memory overflow issue in the gfx IB test
for some ASICs. At least 20 bytes are needed for
the IB test packet.

v2: correct code indentation errors. (Christian)

Signed-off-by: Tim Huang <Tim.Huang@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
10 months agodrm/amdgpu: add init_registers for nbio v7.11
Li Ma [Tue, 21 Nov 2023 08:54:59 +0000 (16:54 +0800)]
drm/amdgpu: add init_registers for nbio v7.11

enable init_registers callback func for nbio v7.11.

Signed-off-by: Li Ma <li.ma@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Simplify brightness initialization
Camille Cho [Fri, 3 Nov 2023 04:08:42 +0000 (12:08 +0800)]
drm/amd/display: Simplify brightness initialization

[Why]
Remove the brightness cache in DC. It uses a single value to represent
the brightness for both SDR and HDR mode. This leads to flash in HDR
on/off. It also unconditionally programs brightness as in HDR mode. This
may introduce garbage on SDR mode in miniLED panel.

[How]
Simplify the initialization flow by removing the DC cache and taking
what panel has as default. Expand the mechanism for PWM to DPCD Aux to
restore cached brightness value generally.

Cc: stable@vger.kernel.org # 6.1+
Reviewed-by: Krunoslav Kovac <krunoslav.kovac@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Camille Cho <camille.cho@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Increase num voltage states to 40
Alvin Lee [Wed, 8 Nov 2023 22:16:28 +0000 (17:16 -0500)]
drm/amd/display: Increase num voltage states to 40

[Description]
If during driver init stage there are greater than 20
intermediary voltage states while constructing the SOC
BB we could hit issues because we will index outside of the
clock_limits array and start overwriting data. Increase the
total number of states to 40 to avoid this issue.

Cc: stable@vger.kernel.org # 6.1+
Reviewed-by: Samson Tam <samson.tam@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Do not read DPREFCLK spread info from LUT on DCN35
Michael Strauss [Fri, 27 Oct 2023 18:12:51 +0000 (14:12 -0400)]
drm/amd/display: Do not read DPREFCLK spread info from LUT on DCN35

[WHY]
Currently DCN35 does not spread DPREFCLK

[HOW]
Remove hardcoded table with nonzero caps

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Use DRAM speed from validation for dummy p-state
Alvin Lee [Tue, 7 Nov 2023 22:01:49 +0000 (17:01 -0500)]
drm/amd/display: Use DRAM speed from validation for dummy p-state

[Description]
When choosing which dummy p-state latency to use, we
need to use the DRAM speed from validation. The DRAMSpeed
DML variable can change because we use different input
params to DML when populating watermarks set B.

Cc: stable@vger.kernel.org # 6.1+
Reviewed-by: Samson Tam <samson.tam@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Fix MPCC 1DLUT programming
Ilya Bakoulin [Tue, 7 Nov 2023 20:07:56 +0000 (15:07 -0500)]
drm/amd/display: Fix MPCC 1DLUT programming

[Why]
Wrong function is used to translate LUT values to HW format, leading to
visible artifacting in some cases.

[How]
Use the correct cm3_helper function.

Cc: stable@vger.kernel.org # 6.1+
Reviewed-by: Krunoslav Kovac <krunoslav.kovac@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Ilya Bakoulin <ilya.bakoulin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Feed SR and Z8 watermarks into DML2 for DCN35
Nicholas Kazlauskas [Tue, 7 Nov 2023 16:15:16 +0000 (11:15 -0500)]
drm/amd/display: Feed SR and Z8 watermarks into DML2 for DCN35

[Why]
We've updated the table but the values aren't being reflected in DML2
calculation.

[How]
Pass them into the bbox overrides.

Reviewed-by: Jun Lei <jun.lei@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amdgpu: Force order between a read and write to the same address
Alex Sierra [Mon, 20 Nov 2023 17:31:32 +0000 (11:31 -0600)]
drm/amdgpu: Force order between a read and write to the same address

Setting register to force ordering to prevent read/write or write/read
hazards for un-cached modes.

Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
10 months agodrm/amdgpu: Do not issue gpu reset from nbio v7_9 bif interrupt
Hawking Zhang [Mon, 20 Nov 2023 02:14:21 +0000 (10:14 +0800)]
drm/amdgpu: Do not issue gpu reset from nbio v7_9 bif interrupt

In nbio v7_9, host driver should not issu gpu reset

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Stanley Yang <Stanley.Yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Add Z8 watermarks for DML2 bbox overrides
Nicholas Kazlauskas [Tue, 7 Nov 2023 16:12:45 +0000 (11:12 -0500)]
drm/amd/display: Add Z8 watermarks for DML2 bbox overrides

[Why]
We can override SR watermarks but not Z8 ones.

[How]
Add new parameters for Z8 matching the SR ones and feed them into the
states.

These also weren't being applied to every state, so make sure that
we loop over and update all SOC states if given an override.

Reviewed-by: Jun Lei <jun.lei@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amdgpu: optimize RLC powerdown notification on Vangogh
Perry Yuan [Tue, 1 Aug 2023 14:37:41 +0000 (10:37 -0400)]
drm/amdgpu: optimize RLC powerdown notification on Vangogh

The smu needs to get the rlc power down message to sync the rlc state
with smu, the rlc state updating message need to be sent at while smu
begin suspend sequence , otherwise SMU will crash while RLC state is not
notified by driver, and rlc state probally changed after that
notification, so it needs to notify rlc state to smu at the end of the
suspend sequence in amdgpu_device_suspend() that can make sure the rlc
state  is correctly set to SMU.

[  101.000590] amdgpu 0000:03:00.0: amdgpu: SMU: I'm not done with your previous command: SMN_C2PMSG_66:0x0000001E SMN_C2PMSG_82:0x00000000
[  101.000598] amdgpu 0000:03:00.0: amdgpu: Failed to disable gfxoff!
[  110.838026] amdgpu 0000:03:00.0: amdgpu: SMU: I'm not done with your previous command: SMN_C2PMSG_66:0x0000001E SMN_C2PMSG_82:0x00000000
[  110.838035] amdgpu 0000:03:00.0: amdgpu: Failed to disable smu features.
[  110.838039] amdgpu 0000:03:00.0: amdgpu: Fail to disable dpm features!
[  110.838040] [drm:amdgpu_device_ip_suspend_phase2 [amdgpu]] *ERROR* suspend of IP block <smu> failed -62
[  110.884394] PM: suspend of devices aborted after 21213.620 msecs
[  110.884402] PM: start suspend of devices aborted after 21213.882 msecs
[  110.884405] PM: Some devices failed to suspend, or early wake event detected

Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: fix a pipe mapping error in dcn32_fpu
Wenjing Liu [Mon, 6 Nov 2023 21:47:19 +0000 (16:47 -0500)]
drm/amd/display: fix a pipe mapping error in dcn32_fpu

[why]
In dcn32 DML pipes are ordered the same as dc pipes but only for used
pipes. For example, if dc pipe 1 and 2 are used, their dml pipe indices
would be 0 and 1 respectively. However
update_pipe_slice_table_with_split_flags doesn't skip indices for free
pipes. This causes us to not reference correct dml pipe output when
building pipe topology.

[how]
Use two variables to iterate dc and dml pipes respectively and only
increment dml pipe index when current dc pipe is not free.

Cc: stable@vger.kernel.org # 6.1+
Reviewed-by: Chaitanya Dhere <chaitanya.dhere@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Update DCN35 watermarks
Nicholas Kazlauskas [Mon, 6 Nov 2023 22:29:33 +0000 (17:29 -0500)]
drm/amd/display: Update DCN35 watermarks

[Why & How]
Update to the new values per HW team request. Affects both stutter
and z8.

Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amdgpu: update xgmi num links info post gc9.4.2
Jonathan Kim [Thu, 16 Nov 2023 18:57:07 +0000 (13:57 -0500)]
drm/amdgpu: update xgmi num links info post gc9.4.2

GC IP 9.4.2 and up support TA reporting of the number
of xGMI links between peers.

Tested-by: Vignesh Chander <vignesh.chander@amd.com>
Signed-off-by: Jonathan Kim <jonathan.kim@amd.com>
Reviewed-by: Mukul Joshi <mukul.joshi@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Add z-state support policy for dcn35
Nicholas Kazlauskas [Fri, 3 Nov 2023 14:01:01 +0000 (10:01 -0400)]
drm/amd/display: Add z-state support policy for dcn35

[Why]
DML2 means that the dcn3x policy for calculating z-state support
no longer runs from validate_bandwidth.

This means we are unconditionally allowing Z8, the hardware default.

[How]
Port the policy over to DCN35, but with a few modifications:
- Don't use min_dst_y_next_start as a check for Z8/Z10 allow
- Add support for overriding the Z10 stutter period per ASIC
- Cleanup the code to make the policy assignment more clear

Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agodrm/amd/display: Include udelay when waiting for INBOX0 ACK
Alvin Lee [Mon, 6 Nov 2023 16:20:15 +0000 (11:20 -0500)]
drm/amd/display: Include udelay when waiting for INBOX0 ACK

When waiting for the ACK for INBOX0 message,
we have to ensure to include the udelay
for proper wait time

Cc: stable@vger.kernel.org # 6.1+
Reviewed-by: Samson Tam <samson.tam@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 months agocpufreq/amd-pstate: Only print supported EPP values for performance governor
Ayush Jain [Fri, 3 Nov 2023 09:48:15 +0000 (15:18 +0530)]
cpufreq/amd-pstate: Only print supported EPP values for performance governor

show_energy_performance_available_preferences() to show only supported
values which is performance in performance governor policy.

-------Before--------
$ cat /sys/devices/system/cpu/cpu1/cpufreq/scaling_driver
amd-pstate-epp
$ cat /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
performance
$ cat /sys/devices/system/cpu/cpu1/cpufreq/energy_performance_preference
performance
$ cat /sys/devices/system/cpu/cpu1/cpufreq/energy_performance_available_preferences
default performance balance_performance balance_power power

-------After--------
$ cat /sys/devices/system/cpu/cpu1/cpufreq/scaling_driver
amd-pstate-epp
$ cat /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
performance
$ cat /sys/devices/system/cpu/cpu1/cpufreq/energy_performance_preference
performance
$ cat /sys/devices/system/cpu/cpu1/cpufreq/energy_performance_available_preferences
performance

Fixes: ffa5096a7c33 ("cpufreq: amd-pstate: implement Pstate EPP support for the AMD processors")
Suggested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Ayush Jain <ayush.jain3@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 months agodm-flakey: start allocating with MAX_ORDER
Mikulas Patocka [Tue, 28 Nov 2023 13:48:06 +0000 (14:48 +0100)]
dm-flakey: start allocating with MAX_ORDER

Commit 23baf831a32c ("mm, treewide: redefine MAX_ORDER sanely")
changed the meaning of MAX_ORDER from exclusive to inclusive. So, we
can allocate compound pages with up to 1 << MAX_ORDER pages.

Reflect this change in dm-flakey and start trying to allocate compound
pages with MAX_ORDER.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
10 months agodm-verity: align struct dm_verity_fec_io properly
Mikulas Patocka [Tue, 28 Nov 2023 13:50:23 +0000 (14:50 +0100)]
dm-verity: align struct dm_verity_fec_io properly

dm_verity_fec_io is placed after the end of two hash digests. If the hash
digest has unaligned length, struct dm_verity_fec_io could be unaligned.

This commit fixes the placement of struct dm_verity_fec_io, so that it's
aligned.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Fixes: a739ff3f543a ("dm verity: add support for forward error correction")
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
10 months agodm verity: don't perform FEC for failed readahead IO
Wu Bo [Wed, 22 Nov 2023 03:51:50 +0000 (20:51 -0700)]
dm verity: don't perform FEC for failed readahead IO

We found an issue under Android OTA scenario that many BIOs have to do
FEC where the data under dm-verity is 100% complete and no corruption.

Android OTA has many dm-block layers, from upper to lower:
dm-verity
dm-snapshot
dm-origin & dm-cow
dm-linear
ufs

DM tables have to change 2 times during Android OTA merging process.
When doing table change, the dm-snapshot will be suspended for a while.
During this interval, many readahead IOs are submitted to dm_verity
from filesystem. Then the kverity works are busy doing FEC process
which cost too much time to finish dm-verity IO. This causes needless
delay which feels like system is hung.

After adding debugging it was found that each readahead IO needed
around 10s to finish when this situation occurred. This is due to IO
amplification:

dm-snapshot suspend
erofs_readahead     // 300+ io is submitted
dm_submit_bio (dm_verity)
dm_submit_bio (dm_snapshot)
bio return EIO
bio got nothing, it's empty
verity_end_io
verity_verify_io
forloop range(0, io->n_blocks)    // each io->nblocks ~= 20
verity_fec_decode
fec_decode_rsb
fec_read_bufs
forloop range(0, v->fec->rsn) // v->fec->rsn = 253
new_read
submit_bio (dm_snapshot)
end loop
end loop
dm-snapshot resume

Readahead BIOs get nothing while dm-snapshot is suspended, so all of
them will cause verity's FEC.
Each readahead BIO needs to verify ~20 (io->nblocks) blocks.
Each block needs to do FEC, and every block needs to do 253
(v->fec->rsn) reads.
So during the suspend interval(~200ms), 300 readahead BIOs trigger
~1518000 (300*20*253) IOs to dm-snapshot.

As readahead IO is not required by userspace, and to fix this issue,
it is best to pass readahead errors to upper layer to handle it.

Cc: stable@vger.kernel.org
Fixes: a739ff3f543a ("dm verity: add support for forward error correction")
Signed-off-by: Wu Bo <bo.wu@vivo.com>
Reviewed-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
10 months agodm verity: initialize fec io before freeing it
Wu Bo [Wed, 22 Nov 2023 03:51:49 +0000 (20:51 -0700)]
dm verity: initialize fec io before freeing it

If BIO error, verity_end_io() can call verity_finish_io() before
verity_fec_init_io(). Therefore, fec_io->rs is not initialized and
may crash when doing memory freeing in verity_fec_finish_io().

Crash call stack:
 die+0x90/0x2b8
 __do_kernel_fault+0x260/0x298
 do_bad_area+0x2c/0xdc
 do_translation_fault+0x3c/0x54
 do_mem_abort+0x54/0x118
 el1_abort+0x38/0x5c
 el1h_64_sync_handler+0x50/0x90
 el1h_64_sync+0x64/0x6c
 free_rs+0x18/0xac
 fec_rs_free+0x10/0x24
 mempool_free+0x58/0x148
 verity_fec_finish_io+0x4c/0xb0
 verity_end_io+0xb8/0x150

Cc: stable@vger.kernel.org # v6.0+
Fixes: 5721d4e5a9cd ("dm verity: Add optional "try_verify_in_tasklet" feature")
Signed-off-by: Wu Bo <bo.wu@vivo.com>
Reviewed-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
10 months agoblock: Document the role of the two attribute groups
Bart Van Assche [Tue, 28 Nov 2023 19:40:19 +0000 (11:40 -0800)]
block: Document the role of the two attribute groups

It is nontrivial to derive the role of the two attribute groups in source
file block/blk-sysfs.c. Hence add a comment that explains their roles. See
also commit 6d85ebf95c44 ("blk-sysfs: add a new attr_group for blk_mq").

Cc: Christoph Hellwig <hch@lst.de>
Cc: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20231128194019.72762-1-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
10 months agotools: ynl-gen: always construct struct ynl_req_state
Jakub Kicinski [Sun, 26 Nov 2023 22:58:58 +0000 (14:58 -0800)]
tools: ynl-gen: always construct struct ynl_req_state

struct ynl_req_state carries reply-related info from generated code
into generic YNL code. While we don't need reply info to execute
a request without a reply, we still need to pass in the struct, because
it's also where we get the pointer to struct ynl_sock from. Passing NULL
results in crashes if kernel returns an error or an unexpected reply.

Fixes: dc0956c98f11 ("tools: ynl-gen: move the response reading logic into YNL")
Link: https://lore.kernel.org/r/20231126225858.2144136-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
10 months agoethtool: don't propagate EOPNOTSUPP from dumps
Jakub Kicinski [Sun, 26 Nov 2023 22:58:06 +0000 (14:58 -0800)]
ethtool: don't propagate EOPNOTSUPP from dumps

The default dump handler needs to clear ret before returning.
Otherwise if the last interface returns an inconsequential
error this error will propagate to user space.

This may confuse user space (ethtool CLI seems to ignore it,
but YNL doesn't). It will also terminate the dump early
for mutli-skb dump, because netlink core treats EOPNOTSUPP
as a real error.

Fixes: 728480f12442 ("ethtool: default handlers for GET requests")
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20231126225806.2143528-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
10 months agocpufreq/amd-pstate: Fix scaling_min_freq and scaling_max_freq update
Wyes Karny [Fri, 17 Nov 2023 06:38:39 +0000 (06:38 +0000)]
cpufreq/amd-pstate: Fix scaling_min_freq and scaling_max_freq update

When amd_pstate is running, writing to scaling_min_freq and
scaling_max_freq has no effect. These values are only passed to the
policy level, but not to the platform level. This means that the
platform does not know about the frequency limits set by the user.

To fix this, update the min_perf and max_perf values at the platform
level whenever the user changes the scaling_min_freq and scaling_max_freq
values.

Fixes: ffa5096a7c33 ("cpufreq: amd-pstate: implement Pstate EPP support for the AMD processors")
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 months agodrm/panel: nt36523: fix return value check in nt36523_probe()
Yang Yingliang [Wed, 29 Nov 2023 09:07:15 +0000 (17:07 +0800)]
drm/panel: nt36523: fix return value check in nt36523_probe()

mipi_dsi_device_register_full() never returns NULL pointer, it
will return ERR_PTR() when it fails, so replace the check with
IS_ERR().

Fixes: 0993234a0045 ("drm/panel: Add driver for Novatek NT36523")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231129090715.856263-1-yangyingliang@huaweicloud.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231129090715.856263-1-yangyingliang@huaweicloud.com
10 months agodrm/panel: starry-2081101qfh032011-53g: Fine tune the panel power sequence
xiazhengqiao [Wed, 29 Nov 2023 08:41:15 +0000 (16:41 +0800)]
drm/panel: starry-2081101qfh032011-53g: Fine tune the panel power sequence

For the "starry, 2081101qfh032011-53g" panel, it is stipulated in the
panel spec that MIPI needs to keep the LP11 state before the
lcm_reset pin is pulled high.

Fixes: 6069b66cd962 ("drm/panel: support for STARRY 2081101QFH032011-53G MIPI-DSI panel")
Signed-off-by: xiazhengqiao <xiazhengqiao@huaqin.corp-partner.google.com>
Reviewed-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Link: https://lore.kernel.org/r/20231129084115.7918-1-xiazhengqiao@huaqin.corp-partner.google.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231129084115.7918-1-xiazhengqiao@huaqin.corp-partner.google.com
10 months agoMerge tag 'pinctrl-v6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
Linus Torvalds [Wed, 29 Nov 2023 14:45:22 +0000 (06:45 -0800)]
Merge tag 'pinctrl-v6.7-2' of git://git./linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:

 - Fix a really interesting potential core bug in the list iterator
   requireing the use of READ_ONCE() discovered when testing kernel
   compiles with clang.

 - Check devm_kcalloc() return value and an array bounds in the STM32
   driver.

 - Fix an exotic string truncation issue in the s32cc driver, found by
   the kernel test robot (impressive!)

 - Fix an undocumented struct member in the cy8c95x0 driver.

 - Fix a symbol overlap with MIPS in the Lochnagar driver, MIPS defines
   a global symbol "RST" which is a bit too generic and collide with
   stuff. OK this one should be renamed too, we will fix that as well.

 - Fix erroneous branch taking in the Realtek driver.

 - Fix the mail address in MAINTAINERS for the s32g2 driver.

* tag 'pinctrl-v6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  dt-bindings: pinctrl: s32g2: change a maintainer email address
  pinctrl: realtek: Fix logical error when finding descriptor
  pinctrl: lochnagar: Don't build on MIPS
  pinctrl: avoid reload of p state in list iteration
  pinctrl: cy8c95x0: Fix doc warning
  pinctrl: s32cc: Avoid possible string truncation
  pinctrl: stm32: fix array read out of bound
  pinctrl: stm32: Add check for devm_kcalloc

10 months agoKVM: PPC: Book3S HV: Fix KVM_RUN clobbering FP/VEC user registers
Nicholas Piggin [Wed, 22 Nov 2023 02:58:11 +0000 (12:58 +1000)]
KVM: PPC: Book3S HV: Fix KVM_RUN clobbering FP/VEC user registers

Before running a guest, the host process (e.g., QEMU) FP/VEC registers
are saved if they were being used, similarly to when the kernel uses FP
registers. The guest values are then loaded into regs, and the host
process registers will be restored lazily when it uses FP/VEC.

KVM HV has a bug here: the host process registers do get saved, but the
user MSR bits remain enabled, which indicates the registers are valid
for the process. After they are clobbered by running the guest, this
valid indication causes the host process to take on the FP/VEC register
values of the guest.

Fixes: 34e119c96b2b ("KVM: PPC: Book3S HV P9: Reduce mtmsrd instructions required to save host SPRs")
Cc: stable@vger.kernel.org # v5.17+
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231122025811.2973-1-npiggin@gmail.com
10 months agoALSA: hda/realtek: Add supported ALC257 for ChromeOS
Kailang Yang [Wed, 29 Nov 2023 07:38:40 +0000 (15:38 +0800)]
ALSA: hda/realtek: Add supported ALC257 for ChromeOS

ChromeOS want to support ALC257.
Add codec ID to some relation function.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/99a88a7dbdb045fd9d934abeb6cec15f@realtek.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
10 months agodrm/i915: Call intel_pre_plane_updates() also for pipes getting enabled
Ville Syrjälä [Tue, 21 Nov 2023 05:43:15 +0000 (07:43 +0200)]
drm/i915: Call intel_pre_plane_updates() also for pipes getting enabled

We used to call intel_pre_plane_updates() for any pipe going through
a modeset whether the pipe was previously enabled or not. This in
fact needed to apply all the necessary clock gating workarounds/etc.
Restore the correct behaviour.

Fixes: 39919997322f ("drm/i915: Disable all planes before modesetting any pipes")
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231121054324.9988-3-ville.syrjala@linux.intel.com
(cherry picked from commit e0d5ce11ed0a21bb2bf328ad82fd261783c7ad88)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
10 months agodrm/i915: Also check for VGA converter in eDP probe
Ville Syrjälä [Tue, 14 Nov 2023 14:23:33 +0000 (16:23 +0200)]
drm/i915: Also check for VGA converter in eDP probe

Unfortunately even the HPD based detection added in
commit cfe5bdfb27fa ("drm/i915: Check HPD live state during eDP probe")
fails to detect that the VBT's eDP/DDI-A is a ghost on
Asus B360M-A (CFL+CNP). On that board eDP/DDI-A has its HPD
asserted despite nothing being actually connected there :(
The straps/fuses also indicate that the eDP port is present.

So if one boots with a VGA monitor connected the eDP probe will
mistake the DP->VGA converter hooked to DDI-E for an eDP panel
on DDI-A.

As a last resort check what kind of DP device we've detected,
and if it looks like a DP->VGA converter then conclude that
the eDP port should be ignored.

Cc: stable@vger.kernel.org
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/9636
Fixes: cfe5bdfb27fa ("drm/i915: Check HPD live state during eDP probe")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231114142333.15799-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit fcd479a79120bf0cd507d85f898297a3b868dda6)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
10 months agodrm/i915/gsc: Mark internal GSC engine with reserved uabi class
Tvrtko Ursulin [Thu, 16 Nov 2023 08:44:56 +0000 (08:44 +0000)]
drm/i915/gsc: Mark internal GSC engine with reserved uabi class

The GSC CS is not exposed to the user, so we skipped assigning a uabi
class number for it. However, the trace logs use the uabi class and
instance to identify the engine, so leaving uabi class unset makes the
GSC CS show up as the RCS in those logs.

Given that the engine is not exposed to the user, we can't add a new
case in the uabi enum, so we insted internally define a kernel
internal class as -1.

At the same time remove special handling for the name and complete
the uabi_classes array so internal class is automatically correctly
assigned.

Engine will show as 65535:0 other0 in the logs/traces which should
be unique enough.

v2:
 * Fix uabi class u8 vs u16 type confusion.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Fixes: 194babe26bdc ("drm/i915/mtl: don't expose GSC command streamer to the user")
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231116084456.291533-1-tvrtko.ursulin@linux.intel.com
(cherry picked from commit dfed6b58d54f3a5d7e6bc1fb060e2c936330eba2)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
10 months agobcachefs: Extra kthread_should_stop() calls for copygc
Kent Overstreet [Tue, 28 Nov 2023 21:33:52 +0000 (16:33 -0500)]
bcachefs: Extra kthread_should_stop() calls for copygc

This fixes a bug where going read-only was taking longer than it should
have due to copygc forgetting to check kthread_should_stop()

Additionally: fix a missing is_kthread check in bch2_move_ratelimit().

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
10 months agobcachefs: Convert gc_alloc_start() to for_each_btree_key2()
Kent Overstreet [Tue, 28 Nov 2023 21:31:48 +0000 (16:31 -0500)]
bcachefs: Convert gc_alloc_start() to for_each_btree_key2()

This eliminates some SRCU warnings: for_each_btree_key2() runs every
loop iteration in a distinct transaction context.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
10 months agobcachefs: Fix race between btree writes and metadata drop
Kent Overstreet [Wed, 29 Nov 2023 00:26:23 +0000 (19:26 -0500)]
bcachefs: Fix race between btree writes and metadata drop

btree writes update the btree node key after every write, in order to
update sectors_written, and they also might need to drop pointers if one
of the writes failed in a replicated btree node.

But the btree node might also have had a pointer dropped while the write
was in flight, by bch2_dev_metadata_drop(), and thus there was a bug
where the btree node write would ovewrite the btree node's key with what
it had at the start of the write.

Fix this by dropping pointers not currently in the btree node key.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
10 months agobcachefs: move journal seq assertion
Kent Overstreet [Mon, 27 Nov 2023 05:53:46 +0000 (00:53 -0500)]
bcachefs: move journal seq assertion

journal_cur_seq() can legitimately be used outside of the journal lock,
where this assert can race

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
10 months agobcachefs: -EROFS doesn't count as move_extent_start_fail
Kent Overstreet [Mon, 27 Nov 2023 04:11:18 +0000 (23:11 -0500)]
bcachefs: -EROFS doesn't count as move_extent_start_fail

The automated tests check if we've hit too many slowpath/error path
events and fail the test - if we're just shutting down, that naturally
shouldn't count.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
10 months agoravb: Fix races between ravb_tx_timeout_work() and net related ops
Yoshihiro Shimoda [Mon, 27 Nov 2023 12:24:20 +0000 (21:24 +0900)]
ravb: Fix races between ravb_tx_timeout_work() and net related ops

Fix races between ravb_tx_timeout_work() and functions of net_device_ops
and ethtool_ops by using rtnl_trylock() and rtnl_unlock(). Note that
since ravb_close() is under the rtnl lock and calls cancel_work_sync(),
ravb_tx_timeout_work() should calls rtnl_trylock(). Otherwise, a deadlock
may happen in ravb_tx_timeout_work() like below:

CPU0 CPU1
ravb_tx_timeout()
schedule_work()
...
__dev_close_many()
// Under rtnl lock
ravb_close()
cancel_work_sync()
// Waiting
ravb_tx_timeout_work()
rtnl_lock()
// This is possible to cause a deadlock

If rtnl_trylock() fails, rescheduling the work with sleep for 1 msec.

Fixes: c156633f1353 ("Renesas Ethernet AVB driver proper")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/20231127122420.3706751-1-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
10 months agosmb: client: report correct st_size for SMB and NFS symlinks
Paulo Alcantara [Tue, 28 Nov 2023 19:37:19 +0000 (16:37 -0300)]
smb: client: report correct st_size for SMB and NFS symlinks

We can't rely on FILE_STANDARD_INFORMATION::EndOfFile for reparse
points as they will be always zero.  Set it to symlink target's length
as specified by POSIX.

This will make stat() family of syscalls return the correct st_size
for such files.

Cc: stable@vger.kernel.org
Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
10 months agosmb: client: fix missing mode bits for SMB symlinks
Paulo Alcantara [Sun, 26 Nov 2023 02:55:10 +0000 (23:55 -0300)]
smb: client: fix missing mode bits for SMB symlinks

When instantiating inodes for SMB symlinks, add the mode bits from
@cifs_sb->ctx->file_mode as we already do for the other special files.

Cc: stable@vger.kernel.org
Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
10 months agonouveau/gsp: replace zero-length array with flex-array member and use __counted_by
Gustavo A. R. Silva [Thu, 16 Nov 2023 18:11:43 +0000 (12:11 -0600)]
nouveau/gsp: replace zero-length array with flex-array member and use __counted_by

Fake flexible arrays (zero-length and one-element arrays) are deprecated,
and should be replaced by flexible-array members. So, replace
zero-length array with a flexible-array member in `struct
PACKED_REGISTRY_TABLE`.

Also annotate array `entries` with `__counted_by()` to prepare for the
coming implementation by GCC and Clang of the `__counted_by` attribute.
Flexible array members annotated with `__counted_by` can have their
accesses bounds-checked at run-time via `CONFIG_UBSAN_BOUNDS` (for array
indexing) and `CONFIG_FORTIFY_SOURCE` (for strcpy/memcpy-family functions).

This fixes multiple -Warray-bounds warnings:
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:1069:29: warning: array subscript 0 is outside array bounds of 'PACKED_REGISTRY_ENTRY[0]' [-Warray-bounds=]
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:1070:29: warning: array subscript 0 is outside array bounds of 'PACKED_REGISTRY_ENTRY[0]' [-Warray-bounds=]
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:1071:29: warning: array subscript 0 is outside array bounds of 'PACKED_REGISTRY_ENTRY[0]' [-Warray-bounds=]
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:1072:29: warning: array subscript 0 is outside array bounds of 'PACKED_REGISTRY_ENTRY[0]' [-Warray-bounds=]

While there, also make use of the struct_size() helper, and address
checkpatch.pl warning:
WARNING: please, no spaces at the start of a line

This results in no differences in binary output.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ZVZbX7C5suLMiBf+@work
10 months agonouveau/gsp/r535: remove a stray unlock in r535_gsp_rpc_send()
Dan Carpenter [Mon, 27 Nov 2023 12:56:33 +0000 (15:56 +0300)]
nouveau/gsp/r535: remove a stray unlock in r535_gsp_rpc_send()

This unlock doesn't belong here and it leads to a double unlock in
the caller, r535_gsp_rpc_push().

Fixes: 176fdcbddfd2 ("drm/nouveau/gsp/r535: add support for booting GSP-RM")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Timur Tabi <ttabi@nvidia.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/a0293812-c05d-45f0-a535-3f24fe582c02@moroto.mountain
10 months agonouveau: find the smallest page allocation to cover a buffer alloc.
Dave Airlie [Fri, 11 Aug 2023 03:15:20 +0000 (13:15 +1000)]
nouveau: find the smallest page allocation to cover a buffer alloc.

With the new uapi we don't have the comp flags on the allocation,
so we shouldn't be using the first size that works, we should be
iterating until we get the correct one.

This reduces allocations from 2MB to 64k in lots of places.

Fixes dEQP-VK.memory.allocation.basic.size_8KiB.forward.count_4000
on my ampere/gsp system.

Cc: stable@vger.kernel.org # v6.6
Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230811031520.248341-1-airlied@gmail.com
10 months agobcachefs: trace_move_extent_start_fail() now includes errcode
Kent Overstreet [Mon, 27 Nov 2023 02:13:54 +0000 (21:13 -0500)]
bcachefs: trace_move_extent_start_fail() now includes errcode

Renamed from trace_move_extent_alloc_mem_fail, because there are other
reasons we colud fail (disk space allocation failure).

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
10 months agobcachefs: Fix split_race livelock
Kent Overstreet [Sun, 26 Nov 2023 23:31:11 +0000 (18:31 -0500)]
bcachefs: Fix split_race livelock

bch2_btree_update_start() calculates which nodes are going to have to be
split/rewritten, so that we know how many nodes to reserve and how deep
in the tree we have to take locks.

But btree node merges require inserting two keys into the parent node,
not just splits.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
10 months agobcachefs: Fix bucket data type for stripe buckets
Kent Overstreet [Sun, 26 Nov 2023 04:55:26 +0000 (23:55 -0500)]
bcachefs: Fix bucket data type for stripe buckets

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
10 months agobcachefs: Add missing validation for jset_entry_data_usage
Kent Overstreet [Sun, 26 Nov 2023 02:42:08 +0000 (21:42 -0500)]
bcachefs: Add missing validation for jset_entry_data_usage

Validation was completely missing for replicas entries in the journal
(not the superblock replicas section) - we can't have replicas entries
pointing to invalid devices.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
10 months agobcachefs: Fix zstd compress workspace size
Kent Overstreet [Sat, 25 Nov 2023 04:12:45 +0000 (23:12 -0500)]
bcachefs: Fix zstd compress workspace size

zstd apparently lies about the size of the compression workspace it
requires; if we double it compression succeeds.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
10 months agoMerge tag 'for-6.7-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave...
Linus Torvalds [Tue, 28 Nov 2023 19:16:04 +0000 (11:16 -0800)]
Merge tag 'for-6.7-rc3-tag' of git://git./linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:
 "A few fixes and message updates:

   - for simple quotas, handle the case when a snapshot is created and
     the target qgroup already exists

   - fix a warning when file descriptor given to send ioctl is not
     writable

   - fix off-by-one condition when checking chunk maps

   - free pages when page array allocation fails during compression
     read, other cases were handled

   - fix memory leak on error handling path in ref-verify debugging
     feature

   - copy missing struct member 'version' in 64/32bit compat send ioctl

   - tree-checker verifies inline backref ordering

   - print messages to syslog on first mount and last unmount

   - update error messages when reading chunk maps"

* tag 'for-6.7-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: send: ensure send_fd is writable
  btrfs: free the allocated memory if btrfs_alloc_page_array() fails
  btrfs: fix 64bit compat send ioctl arguments not initializing version member
  btrfs: make error messages more clear when getting a chunk map
  btrfs: fix off-by-one when checking chunk map includes logical address
  btrfs: ref-verify: fix memory leaks in btrfs_ref_tree_mod()
  btrfs: add dmesg output for first mount and last unmount of a filesystem
  btrfs: do not abort transaction if there is already an existing qgroup
  btrfs: tree-checker: add type and sequence check for inline backrefs

10 months agoblock: warn once for each partition in bio_check_ro()
Yu Kuai [Tue, 28 Nov 2023 12:30:27 +0000 (20:30 +0800)]
block: warn once for each partition in bio_check_ro()

Commit 1b0a151c10a6 ("blk-core: use pr_warn_ratelimited() in
bio_check_ro()") fix message storm by limit the rate, however, there
will still be lots of message in the long term. Fix it better by warn
once for each partition.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20231128123027.971610-3-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
10 months agoblock: move .bd_inode into 1st cacheline of block_device
Ming Lei [Tue, 28 Nov 2023 12:30:26 +0000 (20:30 +0800)]
block: move .bd_inode into 1st cacheline of block_device

The .bd_inode field of block_device is used in IO fast path of
blkdev_write_iter() and blkdev_llseek(), so it is more efficient to keep
it into the 1st cacheline.

.bd_openers is only touched in open()/close(), and .bd_size_lock is only
for updating bdev capacity, which is in slow path too.

So swap .bd_inode layout with .bd_openers & .bd_size_lock to move
.bd_inode into the 1st cache line.

Cc: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20231128123027.971610-2-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
10 months agoio_uring: use fget/fput consistently io_uring-6.7-2023-11-30
Jens Axboe [Tue, 28 Nov 2023 17:29:58 +0000 (10:29 -0700)]
io_uring: use fget/fput consistently

Normally within a syscall it's fine to use fdget/fdput for grabbing a
file from the file table, and it's fine within io_uring as well. We do
that via io_uring_enter(2), io_uring_register(2), and then also for
cancel which is invoked from the latter. io_uring cannot close its own
file descriptors as that is explicitly rejected, and for the cancel
side of things, the file itself is just used as a lookup cookie.

However, it is more prudent to ensure that full references are always
grabbed. For anything threaded, either explicitly in the application
itself or through use of the io-wq worker threads, this is what happens
anyway. Generalize it and use fget/fput throughout.

Also see the below link for more details.

Link: https://lore.kernel.org/io-uring/CAG48ez1htVSO3TqmrF8QcX2WFuYTRM-VZ_N10i-VZgbtg=NNqw@mail.gmail.com/
Suggested-by: Jann Horn <jannh@google.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
10 months agoio_uring: free io_buffer_list entries via RCU
Jens Axboe [Tue, 28 Nov 2023 00:54:40 +0000 (17:54 -0700)]
io_uring: free io_buffer_list entries via RCU

mmap_lock nests under uring_lock out of necessity, as we may be doing
user copies with uring_lock held. However, for mmap of provided buffer
rings, we attempt to grab uring_lock with mmap_lock already held from
do_mmap(). This makes lockdep, rightfully, complain:

WARNING: possible circular locking dependency detected
6.7.0-rc1-00009-gff3337ebaf94-dirty #4438 Not tainted
------------------------------------------------------
buf-ring.t/442 is trying to acquire lock:
ffff00020e1480a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_validate_mmap_request.isra.0+0x4c/0x140

but task is already holding lock:
ffff0000dc226190 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x124/0x264

which lock already depends on the new lock.

the existing dependency chain (in reverse order) is:

-> #1 (&mm->mmap_lock){++++}-{3:3}:
       __might_fault+0x90/0xbc
       io_register_pbuf_ring+0x94/0x488
       __arm64_sys_io_uring_register+0x8dc/0x1318
       invoke_syscall+0x5c/0x17c
       el0_svc_common.constprop.0+0x108/0x130
       do_el0_svc+0x2c/0x38
       el0_svc+0x4c/0x94
       el0t_64_sync_handler+0x118/0x124
       el0t_64_sync+0x168/0x16c

-> #0 (&ctx->uring_lock){+.+.}-{3:3}:
       __lock_acquire+0x19a0/0x2d14
       lock_acquire+0x2e0/0x44c
       __mutex_lock+0x118/0x564
       mutex_lock_nested+0x20/0x28
       io_uring_validate_mmap_request.isra.0+0x4c/0x140
       io_uring_mmu_get_unmapped_area+0x3c/0x98
       get_unmapped_area+0xa4/0x158
       do_mmap+0xec/0x5b4
       vm_mmap_pgoff+0x158/0x264
       ksys_mmap_pgoff+0x1d4/0x254
       __arm64_sys_mmap+0x80/0x9c
       invoke_syscall+0x5c/0x17c
       el0_svc_common.constprop.0+0x108/0x130
       do_el0_svc+0x2c/0x38
       el0_svc+0x4c/0x94
       el0t_64_sync_handler+0x118/0x124
       el0t_64_sync+0x168/0x16c

From that mmap(2) path, we really just need to ensure that the buffer
list doesn't go away from underneath us. For the lower indexed entries,
they never go away until the ring is freed and we can always sanely
reference those as long as the caller has a file reference. For the
higher indexed ones in our xarray, we just need to ensure that the
buffer list remains valid while we return the address of it.

Free the higher indexed io_buffer_list entries via RCU. With that we can
avoid needing ->uring_lock inside mmap(2), and simply hold the RCU read
lock around the buffer list lookup and address check.

To ensure that the arrayed lookup either returns a valid fully formulated
entry via RCU lookup, add an 'is_ready' flag that we access with store
and release memory ordering. This isn't needed for the xarray lookups,
but doesn't hurt either. Since this isn't a fast path, retain it across
both types. Similarly, for the allocated array inside the ctx, ensure
we use the proper load/acquire as setup could in theory be running in
parallel with mmap.

While in there, add a few lockdep checks for documentation purposes.

Cc: stable@vger.kernel.org
Fixes: c56e022c0a27 ("io_uring: add support for user mapped provided buffer ring")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
10 months agoio_uring/kbuf: prune deferred locked cache when tearing down
Jens Axboe [Tue, 28 Nov 2023 00:02:48 +0000 (17:02 -0700)]
io_uring/kbuf: prune deferred locked cache when tearing down

We used to just use our page list for final teardown, which would ensure
that we got all the buffers, even the ones that were not on the normal
cached list. But while moving to slab for the io_buffers, we know only
prune this list, not the deferred locked list that we have. This can
cause a leak of memory, if the workload ends up using the intermediate
locked list.

Fix this by always pruning both lists when tearing down.

Fixes: b3a4dbc89d40 ("io_uring/kbuf: Use slab for struct io_buffer objects")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
10 months agoio_uring/kbuf: recycle freed mapped buffer ring entries
Jens Axboe [Tue, 28 Nov 2023 18:17:25 +0000 (11:17 -0700)]
io_uring/kbuf: recycle freed mapped buffer ring entries

Right now we stash any potentially mmap'ed provided ring buffer range
for freeing at release time, regardless of when they get unregistered.
Since we're keeping track of these ranges anyway, keep track of their
registration state as well, and use that to recycle ranges when
appropriate rather than always allocate new ones.

The lookup is a basic scan of entries, checking for the best matching
free entry.

Fixes: c392cbecd8ec ("io_uring/kbuf: defer release of mapped buffer rings")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
10 months agoio_uring/kbuf: defer release of mapped buffer rings
Jens Axboe [Mon, 27 Nov 2023 23:47:04 +0000 (16:47 -0700)]
io_uring/kbuf: defer release of mapped buffer rings

If a provided buffer ring is setup with IOU_PBUF_RING_MMAP, then the
kernel allocates the memory for it and the application is expected to
mmap(2) this memory. However, io_uring uses remap_pfn_range() for this
operation, so we cannot rely on normal munmap/release on freeing them
for us.

Stash an io_buf_free entry away for each of these, if any, and provide
a helper to free them post ->release().

Cc: stable@vger.kernel.org
Fixes: c56e022c0a27 ("io_uring: add support for user mapped provided buffer ring")
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
10 months agopowercap: DTPM: Fix unneeded conversions to micro-Watts
Lukasz Luba [Mon, 27 Nov 2023 09:28:19 +0000 (09:28 +0000)]
powercap: DTPM: Fix unneeded conversions to micro-Watts

The power values coming from the Energy Model are already in uW.

The PowerCap and DTPM frameworks operate on uW, so all places should
just use the values from the EM.

Fix the code by removing all of the conversion to uW still present in it.

Fixes: ae6ccaa65038 (PM: EM: convert power field to micro-Watts precision and align drivers)
Cc: 5.19+ <stable@vger.kernel.org> # v5.19+
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 months agocpufreq/amd-pstate: Fix the return value of amd_pstate_fast_switch()
Gautham R. Shenoy [Mon, 27 Nov 2023 11:11:21 +0000 (16:41 +0530)]
cpufreq/amd-pstate: Fix the return value of amd_pstate_fast_switch()

cpufreq_driver->fast_switch() callback expects a frequency as a return
value. amd_pstate_fast_switch() was returning the return value of
amd_pstate_update_freq(), which only indicates a success or failure.

Fix this by making amd_pstate_fast_switch() return the target_freq
when the call to amd_pstate_update_freq() is successful, and return
the current frequency from policy->cur when the call to
amd_pstate_update_freq() is unsuccessful.

Fixes: 4badf2eb1e98 ("cpufreq: amd-pstate: Add ->fast_switch() callback")
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Reviewed-by: Perry Yuan <perry.yuan@amd.com>
Cc: 6.4+ <stable@vger.kernel.org> # v6.4+
Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 months agopowerpc: Don't clobber f0/vs0 during fp|altivec register save
Timothy Pearson [Sun, 19 Nov 2023 15:18:02 +0000 (09:18 -0600)]
powerpc: Don't clobber f0/vs0 during fp|altivec register save

During floating point and vector save to thread data f0/vs0 are
clobbered by the FPSCR/VSCR store routine. This has been obvserved to
lead to userspace register corruption and application data corruption
with io-uring.

Fix it by restoring f0/vs0 after FPSCR/VSCR store has completed for
all the FP, altivec, VMX register save paths.

Tested under QEMU in kvm mode, running on a Talos II workstation with
dual POWER9 DD2.2 CPUs.

Additional detail (mpe):

Typically save_fpu() is called from __giveup_fpu() which saves the FP
regs and also *turns off FP* in the tasks MSR, meaning the kernel will
reload the FP regs from the thread struct before letting the task use FP
again. So in that case save_fpu() is free to clobber f0 because the FP
regs no longer hold live values for the task.

There is another case though, which is the path via:
  sys_clone()
    ...
    copy_process()
      dup_task_struct()
        arch_dup_task_struct()
          flush_all_to_thread()
            save_all()

That path saves the FP regs but leaves them live. That's meant as an
optimisation for a process that's using FP/VSX and then calls fork(),
leaving the regs live means the parent process doesn't have to take a
fault after the fork to get its FP regs back. The optimisation was added
in commit 8792468da5e1 ("powerpc: Add the ability to save FPU without
giving it up").

That path does clobber f0, but f0 is volatile across function calls,
and typically programs reach copy_process() from userspace via a syscall
wrapper function. So in normal usage f0 being clobbered across a
syscall doesn't cause visible data corruption.

But there is now a new path, because io-uring can call copy_process()
via create_io_thread() from the signal handling path. That's OK if the
signal is handled as part of syscall return, but it's not OK if the
signal is handled due to some other interrupt.

That path is:

interrupt_return_srr_user()
  interrupt_exit_user_prepare()
    interrupt_exit_user_prepare_main()
      do_notify_resume()
        get_signal()
          task_work_run()
            create_worker_cb()
              create_io_worker()
                copy_process()
                  dup_task_struct()
                    arch_dup_task_struct()
                      flush_all_to_thread()
                        save_all()
                          if (tsk->thread.regs->msr & MSR_FP)
                            save_fpu()
                            # f0 is clobbered and potentially live in userspace

Note the above discussion applies equally to save_altivec().

Fixes: 8792468da5e1 ("powerpc: Add the ability to save FPU without giving it up")
Cc: stable@vger.kernel.org # v4.6+
Closes: https://lore.kernel.org/all/480932026.45576726.1699374859845.JavaMail.zimbra@raptorengineeringinc.com/
Closes: https://lore.kernel.org/linuxppc-dev/480221078.47953493.1700206777956.JavaMail.zimbra@raptorengineeringinc.com/
Tested-by: Timothy Pearson <tpearson@raptorengineering.com>
Tested-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Timothy Pearson <tpearson@raptorengineering.com>
[mpe: Reword change log to describe exact path of corruption & other minor tweaks]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/1921539696.48534988.1700407082933.JavaMail.zimbra@raptorengineeringinc.com
10 months agor8169: prevent potential deadlock in rtl8169_close
Heiner Kallweit [Sun, 26 Nov 2023 22:01:02 +0000 (23:01 +0100)]
r8169: prevent potential deadlock in rtl8169_close

ndo_stop() is RTNL-protected by net core, and the worker function takes
RTNL as well. Therefore we will deadlock when trying to execute a
pending work synchronously. To fix this execute any pending work
asynchronously. This will do no harm because netif_running() is false
in ndo_stop(), and therefore the work function is effectively a no-op.
However we have to ensure that no task is running or pending after
rtl_remove_one(), therefore add a call to cancel_work_sync().

Fixes: abe5fc42f9ce ("r8169: use RTNL to protect critical sections")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/12395867-1d17-4cac-aa7d-c691938fcddf@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
10 months agor8169: fix deadlock on RTL8125 in jumbo mtu mode
Heiner Kallweit [Sun, 26 Nov 2023 18:36:46 +0000 (19:36 +0100)]
r8169: fix deadlock on RTL8125 in jumbo mtu mode

The original change results in a deadlock if jumbo mtu mode is used.
Reason is that the phydev lock is held when rtl_reset_work() is called
here, and rtl_jumbo_config() calls phy_start_aneg() which also tries
to acquire the phydev lock. Fix this by calling rtl_reset_work()
asynchronously.

Fixes: 621735f59064 ("r8169: fix rare issue with broken rx after link-down on RTL8125")
Reported-by: Ian Chen <free122448@hotmail.com>
Tested-by: Ian Chen <free122448@hotmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/caf6a487-ef8c-4570-88f9-f47a659faf33@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
10 months agoefi/unaccepted: Fix off-by-one when checking for overlapping ranges
Michael Roth [Fri, 3 Nov 2023 15:13:54 +0000 (10:13 -0500)]
efi/unaccepted: Fix off-by-one when checking for overlapping ranges

When a task needs to accept memory it will scan the accepting_list
to see if any ranges already being processed by other tasks overlap
with its range. Due to an off-by-one in the range comparisons, a task
might falsely determine that an overlapping range is being accepted,
leading to an unnecessary delay before it begins processing the range.

Fix the off-by-one in the range comparison to prevent this and slightly
improve performance.

Fixes: 50e782a86c98 ("efi/unaccepted: Fix soft lockups caused by parallel memory acceptance")
Link: https://lore.kernel.org/linux-mm/20231101004523.vseyi5bezgfaht5i@amd.com/T/#me2eceb9906fcae5fe958b3fe88e41f920f8335b6
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Michael Roth <michael.roth@amd.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
10 months agoxen/events: fix error code in xen_bind_pirq_msi_to_irq()
Dan Carpenter [Tue, 28 Nov 2023 06:52:41 +0000 (09:52 +0300)]
xen/events: fix error code in xen_bind_pirq_msi_to_irq()

Return -ENOMEM if xen_irq_init() fails.  currently the code returns an
uninitialized variable or zero.

Fixes: 5dd9ad32d775 ("xen/events: drop xen_allocate_irqs_dynamic()")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Juergen Gross <jgross@ssue.com>
Link: https://lore.kernel.org/r/3b9ab040-a92e-4e35-b687-3a95890a9ace@moroto.mountain
Signed-off-by: Juergen Gross <jgross@suse.com>
10 months agox86/xen: fix percpu vcpu_info allocation
Juergen Gross [Fri, 24 Nov 2023 07:48:52 +0000 (08:48 +0100)]
x86/xen: fix percpu vcpu_info allocation

Today the percpu struct vcpu_info is allocated via DEFINE_PER_CPU(),
meaning that it could cross a page boundary. In this case registering
it with the hypervisor will fail, resulting in a panic().

This can easily be fixed by using DEFINE_PER_CPU_ALIGNED() instead,
as struct vcpu_info is guaranteed to have a size of 64 bytes, matching
the cache line size of x86 64-bit processors (Xen doesn't support
32-bit processors).

Fixes: 5ead97c84fa7 ("xen: Core Xen implementation")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.con>
Link: https://lore.kernel.org/r/20231124074852.25161-1-jgross@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
10 months agoneighbour: Fix __randomize_layout crash in struct neighbour
Gustavo A. R. Silva [Sat, 25 Nov 2023 21:33:58 +0000 (15:33 -0600)]
neighbour: Fix __randomize_layout crash in struct neighbour

Previously, one-element and zero-length arrays were treated as true
flexible arrays, even though they are actually "fake" flex arrays.
The __randomize_layout would leave them untouched at the end of the
struct, similarly to proper C99 flex-array members.

However, this approach changed with commit 1ee60356c2dc ("gcc-plugins:
randstruct: Only warn about true flexible arrays"). Now, only C99
flexible-array members will remain untouched at the end of the struct,
while one-element and zero-length arrays will be subject to randomization.

Fix a `__randomize_layout` crash in `struct neighbour` by transforming
zero-length array `primary_key` into a proper C99 flexible-array member.

Fixes: 1ee60356c2dc ("gcc-plugins: randstruct: Only warn about true flexible arrays")
Closes: https://lore.kernel.org/linux-hardening/20231124102458.GB1503258@e124191.cambridge.arm.com/
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Joey Gouly <joey.gouly@arm.com>
Link: https://lore.kernel.org/r/ZWJoRsJGnCPdJ3+2@work
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
10 months agoocteontx2-pf: Restore TC ingress police rules when interface is up
Subbaraya Sundeep [Sat, 25 Nov 2023 16:36:57 +0000 (22:06 +0530)]
octeontx2-pf: Restore TC ingress police rules when interface is up

TC ingress policer rules depends on interface receive queue
contexts since the bandwidth profiles are attached to RQ
contexts. When an interface is brought down all the queue
contexts are freed. This in turn frees bandwidth profiles in
hardware causing ingress police rules non-functional after
the interface is brought up. Fix this by applying all the ingress
police rules config to hardware in otx2_open. Also allow
adding ingress rules only when interface is running
since no contexts exist for the interface when it is down.

Fixes: 68fbff68dbea ("octeontx2-pf: Add police action for TC flower")
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Link: https://lore.kernel.org/r/1700930217-5707-1-git-send-email-sbhatta@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
10 months agoocteontx2-pf: Fix adding mbox work queue entry when num_vfs > 64
Geetha sowjanya [Sat, 25 Nov 2023 16:34:02 +0000 (22:04 +0530)]
octeontx2-pf: Fix adding mbox work queue entry when num_vfs > 64

When more than 64 VFs are enabled for a PF then mbox communication
between VF and PF is not working as mbox work queueing for few VFs
are skipped due to wrong calculation of VF numbers.

Fixes: d424b6c02415 ("octeontx2-pf: Enable SRIOV and added VF mbox handling")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Link: https://lore.kernel.org/r/1700930042-5400-1-git-send-email-sbhatta@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
10 months agonet: stmmac: xgmac: Disable FPE MMC interrupts
Furong Xu [Sat, 25 Nov 2023 06:01:26 +0000 (14:01 +0800)]
net: stmmac: xgmac: Disable FPE MMC interrupts

Commit aeb18dd07692 ("net: stmmac: xgmac: Disable MMC interrupts
by default") tries to disable MMC interrupts to avoid a storm of
unhandled interrupts, but leaves the FPE(Frame Preemption) MMC
interrupts enabled, FPE MMC interrupts can cause the same problem.
Now we mask FPE TX and RX interrupts to disable all MMC interrupts.

Fixes: aeb18dd07692 ("net: stmmac: xgmac: Disable MMC interrupts by default")
Reviewed-by: Larysa Zaremba <larysa.zaremba@intel.com>
Signed-off-by: Furong Xu <0x1207@gmail.com>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Link: https://lore.kernel.org/r/20231125060126.2328690-1-0x1207@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
10 months agodrm/gpuvm: Fix deprecated license identifier
Thomas Hellström [Mon, 6 Nov 2023 11:48:27 +0000 (12:48 +0100)]
drm/gpuvm: Fix deprecated license identifier

"GPL-2.0-only" in the license header was incorrectly changed to the
now deprecated "GPL-2.0". Fix.

Cc: Maxime Ripard <mripard@kernel.org>
Cc: Danilo Krummrich <dakr@redhat.com>
Reported-by: David Edelsohn <dje.gcc@gmail.com>
Closes: https://lore.kernel.org/dri-devel/5lfrhdpkwhpgzipgngojs3tyqfqbesifzu5nf4l5q3nhfdhcf2@25nmiq7tfrew/T/#m5c356d68815711eea30dd94cc6f7ea8cd4344fe3
Fixes: f7749a549b4f ("drm/gpuvm: Dual-licence the drm_gpuvm code GPL-2.0 OR MIT")
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231106114827.62492-1-thomas.hellstrom@linux.intel.com
10 months agoRevert "drm/bridge: panel: Add a device link between drm device and panel device"
Linus Walleij [Mon, 27 Nov 2023 23:10:21 +0000 (00:10 +0100)]
Revert "drm/bridge: panel: Add a device link between drm device and panel device"

This reverts commit 199cf07ebd2b0d41185ac79b895547d45610b681.

This patch creates bugs on devices where the DRM device is
the ancestor of the panel devices.

Attempts to fix this have failed because it leads to using
device core functionality which is questionable.

Reported-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/lkml/CACRpkdaGzXD6HbiX7mVUNJAJtMEPG00Pp6+nJ1P0JrfJ-ArMvQ@mail.gmail.com/T/
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231128-revert-panel-fix-v1-3-69bb05048dae@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231128-revert-panel-fix-v1-3-69bb05048dae@linaro.org
10 months agoRevert "driver core: Export device_is_dependent() to modules"
Linus Walleij [Mon, 27 Nov 2023 23:10:19 +0000 (00:10 +0100)]
Revert "driver core: Export device_is_dependent() to modules"

This reverts commit 1d5e8f4bf06da86b71cc9169110d1a0e1e7af337.

Greg says: "why exactly is this needed?  Nothing outside of
the driver core should be needing this function, it shouldn't
be public at all (I missed that before.)

So please, revert it for now, let's figure out why DRM thinks
this is needed for it's devices, and yet no other bus/subsystem
does."

Link: https://lore.kernel.org/dri-devel/2023112739-willing-sighing-6bdd@gregkh/
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231128-revert-panel-fix-v1-1-69bb05048dae@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231128-revert-panel-fix-v1-1-69bb05048dae@linaro.org
10 months agoRevert "drm/bridge: panel: Check device dependency before managing device link"
Linus Walleij [Mon, 27 Nov 2023 23:10:20 +0000 (00:10 +0100)]
Revert "drm/bridge: panel: Check device dependency before managing device link"

This reverts commit 39d5b6a64ace77d0c11c398d272218df5f939abb.

This patch was causing build errors by using an unexported
function from the device core, which Greg questions the
saneness in exporting.

Link: https://lore.kernel.org/lkml/CACRpkdaGzXD6HbiX7mVUNJAJtMEPG00Pp6+nJ1P0JrfJ-ArMvQ@mail.gmail.com/T/
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231128-revert-panel-fix-v1-2-69bb05048dae@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231128-revert-panel-fix-v1-2-69bb05048dae@linaro.org
10 months agoocteontx2-af: Fix possible buffer overflow
Elena Salomatkina [Fri, 24 Nov 2023 21:08:02 +0000 (00:08 +0300)]
octeontx2-af: Fix possible buffer overflow

A loop in rvu_mbox_handler_nix_bandprof_free() contains
a break if (idx == MAX_BANDPROF_PER_PFFUNC),
but if idx may reach MAX_BANDPROF_PER_PFFUNC
buffer '(*req->prof_idx)[layer]' overflow happens before that check.

The patch moves the break to the
beginning of the loop.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: e8e095b3b370 ("octeontx2-af: cn10k: Bandwidth profiles config support").
Signed-off-by: Elena Salomatkina <elena.salomatkina.cmc@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Subbaraya Sundeep <sbhatta@marvell.com>
Link: https://lore.kernel.org/r/20231124210802.109763-1-elena.salomatkina.cmc@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
10 months agoALSA: hda/realtek: Headset Mic VREF to 100%
Kailang Yang [Wed, 25 Oct 2023 07:24:06 +0000 (15:24 +0800)]
ALSA: hda/realtek: Headset Mic VREF to 100%

This platform need to set Mic VREF to 100%.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/0916af40f08a4348a3298a9a59e6967e@realtek.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
10 months agoio_uring: enable io_mem_alloc/free to be used in other parts
Jens Axboe [Tue, 28 Nov 2023 03:53:52 +0000 (20:53 -0700)]
io_uring: enable io_mem_alloc/free to be used in other parts

In preparation for using these helpers, make them non-static and add
them to our internal header.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
10 months agoMerge branch 'selftests-net-fix-a-few-small-compiler-warnings'
Jakub Kicinski [Tue, 28 Nov 2023 02:12:09 +0000 (18:12 -0800)]
Merge branch 'selftests-net-fix-a-few-small-compiler-warnings'

Willem de Bruijn says:

====================
selftests/net: fix a few small compiler warnings

Observed a clang warning when backporting cmsg_sender.
Ran the same build against all the .c files under selftests/net.

This is clang-14 with -Wall
Which is what tools/testing/selftests/net/Makefile also enables.
====================

Link: https://lore.kernel.org/r/20231124171645.1011043-1-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
10 months agoselftests/net: mptcp: fix uninitialized variable warnings
Willem de Bruijn [Fri, 24 Nov 2023 17:15:22 +0000 (12:15 -0500)]
selftests/net: mptcp: fix uninitialized variable warnings

Same init_rng() in both tests. The function reads /dev/urandom to
initialize srand(). In case of failure, it falls back onto the
entropy in the uninitialized variable. Not sure if this is on purpose.
But failure reading urandom should be rare, so just fail hard. While
at it, convert to getrandom(). Which man 4 random suggests is simpler
and more robust.

    mptcp_inq.c:525:6:
    mptcp_connect.c:1131:6:

    error: variable 'foo' is used uninitialized
    whenever 'if' condition is false
    [-Werror,-Wsometimes-uninitialized]

Fixes: 048d19d444be ("mptcp: add basic kselftest for mptcp")
Fixes: b51880568f20 ("selftests: mptcp: add inq test case")
Cc: Florian Westphal <fw@strlen.de>
Signed-off-by: Willem de Bruijn <willemb@google.com>
----

When input is randomized because this is expected to meaningfully
explore edge cases, should we also add
1. logging the random seed to stdout and
2. adding a command line argument to replay from a specific seed
I can do this in net-next, if authors find it useful in this case.
Reviewed-by: Matthieu Baerts <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20231124171645.1011043-5-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
10 months agoselftests/net: unix: fix unused variable compiler warning
Willem de Bruijn [Fri, 24 Nov 2023 17:15:21 +0000 (12:15 -0500)]
selftests/net: unix: fix unused variable compiler warning

Remove an unused variable.

    diag_uid.c:151:24:
    error: unused variable 'udr'
    [-Werror,-Wunused-variable]

Fixes: ac011361bd4f ("af_unix: Add test for sock_diag and UDIAG_SHOW_UID.")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20231124171645.1011043-4-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
10 months agoselftests/net: fix a char signedness issue
Willem de Bruijn [Fri, 24 Nov 2023 17:15:20 +0000 (12:15 -0500)]
selftests/net: fix a char signedness issue

Signedness of char is signed on x86_64, but unsigned on arm64.

Fix the warning building cmsg_sender.c on signed platforms or
forced with -fsigned-char:

    msg_sender.c:455:12:
    error: implicit conversion from 'int' to 'char'
    changes value from 128 to -128
    [-Werror,-Wconstant-conversion]
        buf[0] = ICMPV6_ECHO_REQUEST;

constant ICMPV6_ECHO_REQUEST is 128.

Link: https://lwn.net/Articles/911914
Fixes: de17e305a810 ("selftests: net: cmsg_sender: support icmp and raw sockets")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20231124171645.1011043-3-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
10 months agoselftests/net: ipsec: fix constant out of range
Willem de Bruijn [Fri, 24 Nov 2023 17:15:19 +0000 (12:15 -0500)]
selftests/net: ipsec: fix constant out of range

Fix a small compiler warning.

nr_process must be a signed long: it is assigned a signed long by
strtol() and is compared against LONG_MIN and LONG_MAX.

ipsec.c:2280:65:
    error: result of comparison of constant -9223372036854775808
    with expression of type 'unsigned int' is always false
    [-Werror,-Wtautological-constant-out-of-range-compare]

  if ((errno == ERANGE && (nr_process == LONG_MAX || nr_process == LONG_MIN))

Fixes: bc2652b7ae1e ("selftest/net/xfrm: Add test for ipsec tunnel")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Dmitry Safonov <0x7f454c46@gmail.com>
Link: https://lore.kernel.org/r/20231124171645.1011043-2-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
10 months agoMerge tag '6.7-rc3-smb3-server-fixes' of git://git.samba.org/ksmbd
Linus Torvalds [Tue, 28 Nov 2023 01:17:23 +0000 (17:17 -0800)]
Merge tag '6.7-rc3-smb3-server-fixes' of git://git.samba.org/ksmbd

Pull smb server fixes from Steve French:

 - Memory leak fix

 - Fix possible deadlock in open

 - Multiple SMB3 leasing (caching) fixes including:
     - incorrect open count (found via xfstest generic/002 with leases)
     - lease breaking incorrect serialization
     - lease break error handling fix
     - fix sending async response when lease pending

 - Async command fix

* tag '6.7-rc3-smb3-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: don't update ->op_state as OPLOCK_STATE_NONE on error
  ksmbd: move setting SMB2_FLAGS_ASYNC_COMMAND and AsyncId
  ksmbd: release interim response after sending status pending response
  ksmbd: move oplock handling after unlock parent dir
  ksmbd: separately allocate ci per dentry
  ksmbd: fix possible deadlock in smb2_open
  ksmbd: prevent memory leak on error return

10 months agogcc-plugins: randstruct: Update code comment in relayout_struct()
Gustavo A. R. Silva [Sat, 25 Nov 2023 21:49:12 +0000 (15:49 -0600)]
gcc-plugins: randstruct: Update code comment in relayout_struct()

Update code comment to clarify that the only element whose layout is
not randomized is a proper C99 flexible-array member. This update is
complementary to commit 1ee60356c2dc ("gcc-plugins: randstruct: Only
warn about true flexible arrays")

Signed-off-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/ZWJr2MWDjXLHE8ap@work
Fixes: 1ee60356c2dc ("gcc-plugins: randstruct: Only warn about true flexible arrays")
Signed-off-by: Kees Cook <keescook@chromium.org>
10 months agoMerge tag 'media/v6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Tue, 28 Nov 2023 00:26:10 +0000 (16:26 -0800)]
Merge tag 'media/v6.7-2' of git://git./linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab.

* tag 'media/v6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: pci: mgb4: add COMMON_CLK dependency
  media: v4l2-subdev: Fix a 64bit bug
  media: mgb4: Added support for T200 card variant
  media: vsp1: Remove unbalanced .s_stream(0) calls

10 months agouapi: propagate __struct_group() attributes to the container union
Dmitry Antipov [Mon, 20 Nov 2023 11:05:08 +0000 (14:05 +0300)]
uapi: propagate __struct_group() attributes to the container union

Recently the kernel test robot has reported an ARM-specific BUILD_BUG_ON()
in an old and unmaintained wil6210 wireless driver. The problem comes from
the structure packing rules of old ARM ABI ('-mabi=apcs-gnu'). For example,
the following structure is packed to 18 bytes instead of 16:

struct poorly_packed {
        unsigned int a;
        unsigned int b;
        unsigned short c;
        union {
                struct {
                        unsigned short d;
                        unsigned int e;
                } __attribute__((packed));
                struct {
                        unsigned short d;
                        unsigned int e;
                } __attribute__((packed)) inner;
        };
} __attribute__((packed));

To fit it into 16 bytes, it's required to add packed attribute to the
container union as well:

struct poorly_packed {
        unsigned int a;
        unsigned int b;
        unsigned short c;
        union {
                struct {
                        unsigned short d;
                        unsigned int e;
                } __attribute__((packed));
                struct {
                        unsigned short d;
                        unsigned int e;
                } __attribute__((packed)) inner;
        } __attribute__((packed));
} __attribute__((packed));

Thanks to Andrew Pinski of GCC team for sorting the things out at
https://gcc.gnu.org/pipermail/gcc/2023-November/242888.html.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202311150821.cI4yciFE-lkp@intel.com
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Link: https://lore.kernel.org/r/20231120110607.98956-1-dmantipov@yandex.ru
Fixes: 50d7bd38c3aa ("stddef: Introduce struct_group() helper macro")
Signed-off-by: Kees Cook <keescook@chromium.org>
10 months agoMAINTAINERS: refresh LLVM support
ndesaulniers@google.com [Fri, 17 Nov 2023 19:24:02 +0000 (11:24 -0800)]
MAINTAINERS: refresh LLVM support

As discussed at the ClangBuiltLinux '23 meetup (co-located with Linux Plumbers
Conf '23), I'll be taking a step back from kernel work to focus on my growing
family and helping Google figure out its libc story. So I think it's time to
formally hand over the reigns to my co-maintainer Nathan.

As such, remove myself from reviewer for:
- CLANG CONTROL FLOW INTEGRITY SUPPORT
- COMPILER ATTRIBUTES
- KERNEL BUILD

For CLANG/LLVM BUILD SUPPORT I'm bumping myself down from maintainer to
reviewer, adding Bill and Justin, and removing Tom (Tom and I confirmed this
via private email; thanks for the work done Tom, ++beers_owed).

It has been my pleasure to work with everyone to improve the toolchain
portability of the Linux kernel, and to help bring LLVM to the table as a
competitor. The work here is not done.  I have a few last LLVM patches in the
works to improve stack usage of clang which has been our longest standing open
issue (getting "rm" inline asm constraints to DTRT is part of that). But
looking back I'm incredibly proud of where we are to today relative to where we
were when we started the ClangBuiltLinux journey, and am confident that the
team and processes we have put in place will continue to be successful. I
continue to believe that a rising tide will lift all boats.

I identify first and foremost as a Linux kernel developer, and an LLVM dev
second. May it be a cold day in hell when that changes.

Wake me when you need me.

Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Acked-by: Bill Wendling <morbo@google.com>
Acked-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20231117-maintainers-v1-1-85f2a7422ed9@google.com
Signed-off-by: Kees Cook <keescook@chromium.org>
10 months agoio_uring: don't guard IORING_OFF_PBUF_RING with SETUP_NO_MMAP
Jens Axboe [Tue, 28 Nov 2023 00:08:19 +0000 (17:08 -0700)]
io_uring: don't guard IORING_OFF_PBUF_RING with SETUP_NO_MMAP

This flag only applies to the SQ and CQ rings, it's perfectly valid
to use a mmap approach for the provided ring buffers. Move the
check into where it belongs.

Cc: stable@vger.kernel.org
Fixes: 03d89a2de25b ("io_uring: support for user allocated memory for rings/sqes")
Signed-off-by: Jens Axboe <axboe@kernel.dk>