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drm/amdgpu: Reserve fences for VM update

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In amdgpu_dma_buf_move_notify reserve fences for the page table updates
in amdgpu_vm_clear_freed and amdgpu_vm_handle_moved. This fixes a BUG_ON
in dma_resv_add_fence when using SDMA for page table updates.

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>
This commit is contained in:
Felix Kuehling 2023-07-17 15:28:52 -04:00 committed by Alex Deucher
parent 51b79f3381
commit 316baf09d3
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
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@ -403,7 +403,10 @@ amdgpu_dma_buf_move_notify(struct dma_buf_attachment *attach)
continue;
}
r = amdgpu_vm_clear_freed(adev, vm, NULL);
/* Reserve fences for two SDMA page table updates */
r = dma_resv_reserve_fences(resv, 2);
if (!r)
r = amdgpu_vm_clear_freed(adev, vm, NULL);
if (!r)
r = amdgpu_vm_handle_moved(adev, vm);