Commit 8ce1d255 authored by Eric Huang's avatar Eric Huang Committed by Alex Deucher
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drm/amdkfd: Add sync after creating vram bo 



There will be data corruption on vram allocated by svm
if the initialization is not complete and application is
writting on the memory. Adding sync to wait for the
initialization completion is to resolve this issue.

Signed-off-by: default avatarEric Huang <jinhuieric.huang@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 9d086e0d

drivers/gpu/drm/amd/amdkfd/kfd_svm.c

+9 −0
Original line number Diff line number Diff line
@@ -570,6 +570,15 @@ svm_range_vram_node_new(struct amdgpu_device *adev, struct svm_range *prange, 
		goto reserve_bo_failed;

	}



	if (clear) {

		r = amdgpu_bo_sync_wait(bo, AMDGPU_FENCE_OWNER_KFD, false);

		if (r) {

			pr_debug("failed %d to sync bo\n", r);

			amdgpu_bo_unreserve(bo);

			goto reserve_bo_failed;

		}

	}



	r = dma_resv_reserve_fences(bo->tbo.base.resv, 1);

	if (r) {

		pr_debug("failed %d to reserve bo\n", r);