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drm/amdgpu: Let KFD sync with VM fences

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[ Upstream commit ec9ba4821f ]

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 cef7f96a0a
commit 0d35c8977b
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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@ -191,7 +191,8 @@ static bool amdgpu_sync_test_fence(struct amdgpu_device *adev,
/* Never sync to VM updates either. */
if (fence_owner == AMDGPU_FENCE_OWNER_VM &&
owner != AMDGPU_FENCE_OWNER_UNDEFINED)
owner != AMDGPU_FENCE_OWNER_UNDEFINED &&
owner != AMDGPU_FENCE_OWNER_KFD)
return false;
/* Ignore fences depending on the sync mode */