dmabuf is allocated/mapped as GTT domain, when dma-unmapping dmabuf changing placement to CPU will trigger memory eviction after calling ttm_bo_validate, and the eviction will cause performance drop. Keeping the correct domain will solve the issue.
Signed-off-by: Eric Huang <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c index a3b09edfd1bf..17b708acb447 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c @@ -642,7 +642,7 @@ kfd_mem_dmaunmap_dmabuf(struct kfd_mem_attachment *attachment) struct ttm_operation_ctx ctx = {.interruptible = true}; struct amdgpu_bo *bo = attachment->bo_va->base.bo; - amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_CPU); + amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT); ttm_bo_validate(&bo->tbo, &bo->placement, &ctx); } -- 2.34.1
