[PATCH 2/3] drm/amdgpu: Use preemptible domain for KFD

[Felix Kuehling]

KFD userptr BOs and SG BOs used for DMA mappings can be preempted with
CWSR. Therefore we can place them in the preemptible domain and avoid
unwanted evictions.

Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index 928e8d57cd08..2856ca1032db 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -511,7 +511,7 @@ kfd_mem_dmamap_userptr(struct kgd_mem *mem,
 	drm_prime_sg_to_dma_addr_array(ttm->sg, ttm->dma_address,
 				       ttm->num_pages);
 
-	amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT);
+	amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_PREEMPT);
 	ret = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 	if (ret)
 		goto unmap_sg;
@@ -535,7 +535,7 @@ kfd_mem_dmamap_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_GTT);
+	amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_PREEMPT);
 	return ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 }
 
@@ -1408,7 +1408,7 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
 		domain = alloc_domain = AMDGPU_GEM_DOMAIN_GTT;
 		alloc_flags = 0;
 	} else if (flags & KFD_IOC_ALLOC_MEM_FLAGS_USERPTR) {
-		domain = AMDGPU_GEM_DOMAIN_GTT;
+		domain = AMDGPU_GEM_DOMAIN_PREEMPT;
 		alloc_domain = AMDGPU_GEM_DOMAIN_CPU;
 		alloc_flags = 0;
 		if (!offset || !*offset)
-- 
2.31.1