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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2021-01-17 09:30:15 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2021-01-18 12:13:48 +0000 |
| commit | ace44e13e577c2ae59980e9a6ff5ca253b1cf831 (patch) | |
| tree | 0041119216591af4c88d3ec6bdf235d224fec123 /drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | |
| parent | drm/i915/gt: Convert stats.active to plain unsigned int (diff) | |
| download | wireguard-linux-ace44e13e577c2ae59980e9a6ff5ca253b1cf831.tar.xz wireguard-linux-ace44e13e577c2ae59980e9a6ff5ca253b1cf831.zip | |
drm/i915/gt: Clear CACHE_MODE prior to clearing residuals
Since we do a bare context switch with no restore, the clear residual
kernel runs on dirty state, and we must be careful to avoid executing
with bad state from context registers inherited from a malicious client.
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2955
Fixes: 008ead6ef8f5 ("drm/i915/gt: Restore clear-residual mitigations for Ivybridge, Baytrail")
Fixes: 09aa9e45863e ("drm/i915/gt: Restore clear-residual mitigations for Ivybridge, Baytrail")
Testcase: igt/gem_ctx_isolation # ivb,vlv
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Reviewed-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210117093015.29143-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.h')
0 files changed, 0 insertions, 0 deletions