Commit graph

1,169,205 commits

Author SHA1 Message Date
Rohit Agarwal
5a4eb91634 dt-bindings: arm-smmu: Add binding for SDX65 SMMU
Add devicetree binding for Qualcomm SDX65 SMMU.

Signed-off-by: Rohit Agarwal <quic_rohiagar@quicinc.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/1649670615-21268-5-git-send-email-quic_rohiagar@quicinc.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-05-06 16:22:05 +01:00
Puyou Lu
dba7857985 gpio: pca953x: fix irq_stat not updated when irq is disabled (irq_mask not set)
When one port's input state get inverted (eg. from low to hight) after
pca953x_irq_setup but before setting irq_mask (by some other driver such as
"gpio-keys"), the next inversion of this port (eg. from hight to low) will not
be triggered any more (because irq_stat is not updated at the first time). Issue
should be fixed after this commit.

Fixes: 89ea8bbe9c ("gpio: pca953x.c: add interrupt handling capability")
Signed-off-by: Puyou Lu <puyou.lu@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-05-06 16:59:29 +02:00
Eric Yang
9b9bd3f640 drm/amd/display: undo clearing of z10 related function pointers
[Why]
Z10 and S0i3 have some shared path. Previous code clean up ,
incorrectly removed these pointers, which breaks s0i3 restore

[How]
Do not clear the function pointers based on Z10 disable.

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Pavle Kotarac <Pavle.Kotarac@amd.com>
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:55:01 -04:00
Richard Gong
aa482ddca8 drm/amdgpu: vi: disable ASPM on Intel Alder Lake based systems
Active State Power Management (ASPM) feature is enabled since kernel 5.14.
There are some AMD Volcanic Islands (VI) GFX cards, such as the WX3200 and
RX640, that do not work with ASPM-enabled Intel Alder Lake based systems.
Using these GFX cards as video/display output, Intel Alder Lake based
systems will freeze after suspend/resume.

The issue was originally reported on one system (Dell Precision 3660 with
BIOS version 0.14.81), but was later confirmed to affect at least 4
pre-production Alder Lake based systems.

Add an extra check to disable ASPM on Intel Alder Lake based systems with
the problematic AMD Volcanic Islands GFX cards.

Fixes: 0064b0ce85 ("drm/amd/pm: enable ASPM by default")
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/1885
Signed-off-by: Richard Gong <richard.gong@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2022-05-06 10:52:29 -04:00
Huang Rui
f333c9c6f5 drm/amdgpu/discovery: enable mes support for GC v11.0.1
GC v11.0.1 is using MES v11, so add IP block.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:15 -04:00
Huang Rui
10eab4e7d7 drm/amdgpu/discovery: enable gfx v11 for GC 11.0.1
Enable gfx v11 for GC 11.0.1.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:15 -04:00
Huang Rui
7319c14fb0 drm/amdgpu: enable imu firmware for GC 11.0.1
The GC 11.0.1 needs load IMU to power up the GFX before loads GFX
firmware.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Tim Huang <Tim.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:15 -04:00
Huang Rui
26776a7031 drm/amdkfd: add GC 11.0.1 KFD support
Add initial support for GC 11.0.1 in KFD compute driver.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:15 -04:00
Huang Rui
b0abae7d5d drm/amdgpu: add GC v11.0.1 into mes v11
Add GC v11.0.1 support into mes v11.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Huang Rui
2e5dbc1b05 drm/amdgpu: add gfx support for GC 11.0.1
Add GC 11.0.1 gfx support to gfx11 implementation.

v2: squash in golden regs

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Alex Deucher
921173e24d drm/amdgpu/discovery: set flag for GC 11.0.1
Set the APU flag appropriately for GC 11.0.1.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Huang Rui
2375271493 drm/amdgpu: set GC 11.0.1 family
Add GC 11.0.1 family support.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Huang Rui
cbe757ecdb drm/amdgpu: add GC 11.0.1 family id
Add a flag to define GC 11.0.1.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Huang Rui
500448dce2 drm/amdgpu/discovery: enable sdma v6 for SDMA 6.0.1
Enable sdma (system dma) v6 for SDMA 6.0.1.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Huang Rui
04dd809b6f drm/amdgpu: add sdma support for sdma 6.0.1
Add sdma 6.0.1 support to sdma6 implementation.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Xiaojian Du
bed95cfdc5 drm/amdgpu/discovery: add PSP v13.0.4 into the IP discovery list
This patch will add PSP v13.0.4 into the IP discovery list.

Signed-off-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Huang Rui
48858a101e drm/amdgpu/discovery: enable ih v6 for OSS 6.0.1
Enable ih (interrupt handler) v6 for OSS 6.0.1.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Huang Rui
a8f24139cc drm/amdgpu/discovery: enable gmc v11 for GC 11.0.1
Enable gmc (graphic memory controller) v11 for GC 11.0.1.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Huang Rui
ee367aed75 drm/amdgpu: add gmc v11 support for GC 11.0.1
Add gmc v11 support for GC 11.0.1.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Huang Rui
6e4eb7ce1f drm/amdgpu/discovery: enable soc21 common for GC 11.0.1
Enable soc21 common for GC 11.0.1.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Huang Rui
11417a927b drm/amdgpu: add soc21 common ip block support for GC 11.0.1
Add common soc21 ip block support for GC 11.0.1.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Huang Rui
50e9f54de4 drm/amdgpu: add mmhub support for MMHUB 3.0.1
Add the mmhub support for MMHUB 3.0.1.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Xiaojian Du
6e9e59e26f drm/amdgpu/discovery: add HDP v5.2.1 into the IP discovery list
This patch is to add HDP v5.2.1 in the IP discovery list.

Signed-off-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:14 -04:00
Xiaojian Du
78039df8e8 drm/amdgpu: add the files of HDP v5.2 block
This patch is to add the files of HDP v5.2 block.
HDP (Host Data Port) is the IP which handles
host access to VRAM via the PCI BAR.

Signed-off-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:13 -04:00
Huang Rui
c4d1c905ba drm/amdgpu: add hdp v5_2_1 ip headers
Add hdp v5.2.1 offset and shift mask ip header files.

v2: squash in updates (Alex)

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:13 -04:00
Xiaojian Du
0c1e5527e0 drm/admgpu/discovery: add NBIO v7.7 into the IP discovery list
This patch is to add NBIO v7.7 into the IP discovery list.

Signed-off-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:13 -04:00
Xiaojian Du
810ecd4001 drm/amdgpu: add the files of NBIO v7.7 block
This patch is to add the files of NBIO v7.7 block.
NBIO (New Bus IO) is the block which handles
the GPU interface to the PCIe bus.

v2: squash in register name fix (Xiaojian)

Signed-off-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:13 -04:00
Xiaojian Du
bafd6cbe4a drm/amdgpu: add pcie port function helpers for SOC21
These helpers will be used on NBIO v7.7.0.

Signed-off-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:13 -04:00
Huang Rui
4debe75395 drm/amdgpu: add nbio v7_7_0 ip headers
Add nbio v7.7.0 offset and shift mask ip header files.

v2: squash in updates (Alex)

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:13 -04:00
Xiaojian Du
f5d990d612 drm/amdgpu: skip the new gc doorbell function for some asics
This patch will skip the new gc doorbell function for some asics,
only enable new doorbell model on aisc where it is supported.

Signed-off-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:13 -04:00
Xiaojian Du
06aeb75332 drm/amdgpu: handle asics with 1 SDMA instance
This patch will handle asics with 1 SDMA instance.

Signed-off-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:13 -04:00
Kenneth Feng
c1eeb3d2e8 drm/amd/pm: report preDS gfxclk on smu_v13_0_7
report preDS gfxclk on smu_v13_0_7 to avoid the test confusion

Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Jack Gui <Jack.Gui@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:12 -04:00
Kenneth Feng
cbd3adaef8 drm/amd/pm: change the soft pptable id for smu_v13_0_7
change the soft pptable id for smu_v13_0_7 according to pptable updatde

Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:12 -04:00
Yang Wang
9861185481 drm/amd/pm: enable pmlog support for smu_v13_0_7
enable pmlog support for smu 13_0_7.

Signed-off-by: Yang Wang <KevinYang.Wang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:12 -04:00
Kenneth Feng
334682ae81 drm/amd/pm: enable workload type change on smu_v13_0_7
enable workload type change on smu_v13_0_7

v2: squash in out of bounds fix (Alex)

Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-05-06 10:36:12 -04:00
Qi Liu
6b79738b6e drivers/perf: hisi: Add Support for CPA PMU
On HiSilicon Hip09 platform, there is a CPA (Coherency Protocol Agent) on
each SICL (Super IO Cluster) which implements packet format translation,
route parsing and traffic statistics.

CPA PMU has 8 PMU counters and interrupt is supported to handle counter
overflow. Let's support its driver under the framework of HiSilicon PMU
driver.

Signed-off-by: Qi Liu <liuqi115@huawei.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/20220415102352.6665-3-liuqi115@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-05-06 15:14:31 +01:00
Qi Liu
807907dae9 drivers/perf: hisi: Associate PMUs in SICL with CPUs online
If a PMU is in a SICL (Super IO cluster), it is not appropriate to
associate this PMU with a CPU die. So we associate it with all CPUs
online, rather than CPUs in the nearest SCCL.

As the firmware of Hip09 platform hasn't been published yet, change
of PMU driver will not influence backwards compatibility between
driver and firmware.

Signed-off-by: Qi Liu <liuqi115@huawei.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/20220415102352.6665-2-liuqi115@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-05-06 15:14:31 +01:00
Shaokun Zhang
47a9ed88a4 drivers/perf: arm_spe: Expose saturating counter to 16-bit
In order to acquire more accurate latency, Armv8.8[1] has defined the
CountSize field to 16-bit saturating counters when it's 0b0011.

Let's support this new feature and expose its to user under sysfs.

[1] https://developer.arm.com/documentation/ddi0487/latest

Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/20220429063307.63251-1-zhangshaokun@hisilicon.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-05-06 15:10:00 +01:00
Robin Murphy
23760a0144 perf/arm-cmn: Add CMN-700 support
Add the identifiers, events, and subtleties for CMN-700. Highlights
include yet more options for doubling up CHI channels, which finally
grows event IDs beyond 8 bits for XPs, and a new set of CML gateway
nodes adding support for CXL as well as CCIX, where the Link Agent is
now internal to the CMN mesh so we gain regular PMU events for that too.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Link: https://lore.kernel.org/r/cf892baa0d0258ea6cd6544b15171be0069a083a.1650320598.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-05-06 15:07:25 +01:00
Robin Murphy
65adf71398 perf/arm-cmn: Refactor occupancy filter selector
So far, DNs and HN-Fs have each had one event ralated to occupancy
trackers which are filtered by a separate field. CMN-700 raises the
stakes by introducing two more sets of HN-F events with corresponding
additional filter fields. Prepare for this by refactoring our filter
selection and tracking logic to account for multiple filter types
coexisting on the same node. This need not affect the uAPI, which can
just continue to encode any per-event filter setting in the "occupid"
config field, even if it's technically not the most accurate name for
some of them.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Link: https://lore.kernel.org/r/1aa47ba0455b144c416537f6b0e58dc93b467a00.1650320598.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-05-06 15:07:25 +01:00
Robin Murphy
8e504d93ac perf/arm-cmn: Add CMN-650 support
Add the identifiers and events for CMN-650, which slots into its
evolutionary position between CMN-600 and the 700-series products.
Imagine CMN-600 made bigger, and with most of the rough edges smoothed
off, but that then balanced out by some bonkers PMU functionality for
the new HN-P enhancement in CMN-650r2.

Most of the CXG events are actually common to newer revisions of CMN-600
too, so they're arguably a little late; oh well.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Link: https://lore.kernel.org/r/b0adc5824db53f71a2b561c293e2120390106536.1650320598.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-05-06 15:07:25 +01:00
Robin Murphy
2b60a22b70 dt-bindings: perf: arm-cmn: Add CMN-650 and CMN-700
If you were to guess from the product names that CMN-650 and CMN-700 are
the next two evolutionary steps of Arm's enterprise-level interconnect
following on from CMN-600, you'd be pleasantly correct. Add them to the
DT binding.

CC: devicetree@vger.kernel.org
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Rob Herring <robh@kernel.org>
Tested-by: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Link: https://lore.kernel.org/r/9b4dc0c82c91adff62b6f92eec5f61fb25b9db87.1650320598.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-05-06 15:07:25 +01:00
Ren Yu
4b5b712909 perf: check return value of armpmu_request_irq()
When the function armpmu_request_irq() failed, goto err

Signed-off-by: Ren Yu <renyu@nfschina.com>
Link: https://lore.kernel.org/r/20220425100436.4881-1-renyu@nfschina.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-05-06 15:04:48 +01:00
Peter Zijlstra
3ff5f78409 linkage: Fix issue with missing symbol size
Occasionally, typically when a function doesn't end with 'ret', an
alias on that function will have 0 size.

The difference between what GCC generates and our linkage magic, is
that GCC doesn't appear to provide .size for the alias'ed symbol at
all. And indeed, removing this directive cures the issue.

Additionally, GCC also doesn't emit .type for alias symbols either, so
also omit that.

Fixes: e0891269a8 ("linkage: add SYM_FUNC_ALIAS{,_LOCAL,_WEAK}()")
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20220506121631.437480085@infradead.org
2022-05-06 15:59:39 +02:00
Peter Zijlstra
1b331eeea7 x86/entry: Remove skip_r11rcx
Yes, r11 and rcx have been restored previously, but since they're being
popped anyway (into rsi) might as well pop them into their own regs --
setting them to the value they already are.

Less magical code.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220506121631.365070674@infradead.org
2022-05-06 15:58:19 +02:00
Peter Zijlstra
8c42819b61 x86/entry: Use PUSH_AND_CLEAR_REGS for compat
Since the upper regs don't exist for ia32 code, preserving them
doesn't hurt and it simplifies the code.

This doesn't add any attack surface that would not already be
available through INT80.

Notably:

 - 32bit SYSENTER: didn't clear si, dx, cx.

 - 32bit SYSCALL, INT80: *do* clear si since the C functions don't
   take a second argument.

 - 64bit: didn't clear si since the C functions take a second
   argument; except the error_entry path might have only one argument,
   so clearing si was missing here.

32b SYSENTER should be clearing all those 3 registers, nothing uses them
and selftests pass.

Unconditionally clear rsi since it simplifies code.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220506121631.293889636@infradead.org
2022-05-06 15:57:02 +02:00
Thierry Reding
cb7e1abc2c drm/tegra: gem: Do not try to dereference ERR_PTR()
When mapping the DMA-BUF attachment fails, map->sgt will be an ERR_PTR-
encoded error code and the cleanup code would try to free that memory,
which obviously would fail.

Zero out that pointer after extracting the error code when this happens
so that kfree() can do the right thing.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2022-05-06 15:52:49 +02:00
Linus Torvalds
d205222eb6 x86/entry: Simplify entry_INT80_compat()
Instead of playing silly games with rdi, use rax for simpler and more
consistent code.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220506121631.221072885@infradead.org
2022-05-06 15:49:51 +02:00
Josh Poimboeuf
a1e2c031ec x86/mm: Simplify RESERVE_BRK()
RESERVE_BRK() reserves data in the .brk_reservation section.  The data
is initialized to zero, like BSS, so the macro specifies 'nobits' to
prevent the data from taking up space in the vmlinux binary.  The only
way to get the compiler to do that (without putting the variable in .bss
proper) is to use inline asm.

The macro also has a hack which encloses the inline asm in a discarded
function, which allows the size to be passed (global inline asm doesn't
allow inputs).

Remove the need for the discarded function hack by just stringifying the
size rather than supplying it as an input to the inline asm.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220506121631.133110232@infradead.org
2022-05-06 15:26:33 +02:00
Palmer Dabbelt
c7a9dcea8e perf: RISC-V: Remove non-kernel-doc ** comments
This will presumably trip up some tools that try to parse the comments
as kernel doc when they're not.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 4905ec2fb7 ("RISC-V: Add sscofpmf extension support")
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

--

These recently landed in for-next, but I'm trying to avoid rewriting
history as there's a lot in flight right now.

Reviewed-by: Atish Patra <atishp@rivosinc.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20220322220147.11407-1-palmer@rivosinc.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-05-06 13:48:30 +01:00