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drm/amd/amdgpu: Avoid writing GMC registers under sriov in gmc9
authorYuBiao Wang <YuBiao.Wang@amd.com>
Thu, 4 Nov 2021 02:50:41 +0000 (10:50 +0800)
committerAlex Deucher <alexander.deucher@amd.com>
Fri, 5 Nov 2021 18:11:20 +0000 (14:11 -0400)
commit7c83da356b87ad8c72913d02328f28c48d2bc04a
tree1ec148ec7d703f8d8e848ab6920486cb1b827bf6tree | snapshot
parent00e8a0873bb2be15dbebdf4dd835f5dd4134d761commit | diff
drm/amd/amdgpu: Avoid writing GMC registers under sriov in gmc9

[Why]
For Vega10, disabling gart of gfxhub could mess up KIQ and PSP
under sriov mode, and lead to DMAR on host side.

[How]
Skip writing GMC registers under sriov.

Signed-off-by: YuBiao Wang <YuBiao.Wang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c diff | blob | history
Linux Kernel Source Tree.