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drm/amdgpu: Let KFD sync with VM fences

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[ Upstream commit ec9ba4821fa52b5efdbc4cdf0a77497990655231 ]

Change the rules for amdgpu_sync_resv to let KFD synchronize with VM
fences on page table reservations. This fixes intermittent memory
corruption after evictions when using amdgpu_vm_handle_moved to update
page tables for VM mappings managed through render nodes.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Felix Kuehling 2023-12-18 16:17:23 -05:00 committed by Greg Kroah-Hartman
parent 15d674571a
commit 548f9a37d7
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
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@ -218,7 +218,8 @@ int amdgpu_sync_resv(struct amdgpu_device *adev,
*/
fence_owner = amdgpu_sync_get_owner(f);
if (fence_owner == AMDGPU_FENCE_OWNER_KFD &&
owner != AMDGPU_FENCE_OWNER_UNDEFINED)
owner != AMDGPU_FENCE_OWNER_UNDEFINED &&
owner != AMDGPU_FENCE_OWNER_KFD)
continue;
if (amdgpu_sync_same_dev(adev, f)) {