drm/amdgpu: Don't change preferred domian when fallback GTT v5

v2: add sanity checking
v3: make code open
v4: also handle visible to invisible fallback
v5: Since two fallback cases, re-use goto retry

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 15 insertions, 3 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 6d08cde8443c..fac4b6067efd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -356,6 +356,7 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev, unsigned long size,
         struct amdgpu_bo *bo;
         unsigned long page_align;
         size_t acc_size;
+        u32 domains;
         int r;
 
         page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT;
@@ -417,12 +418,23 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev, unsigned long size,
 #endif
 
         bo->tbo.bdev = &adev->mman.bdev;
-        amdgpu_ttm_placement_from_domain(bo, domain);
-
+        domains = bo->preferred_domains;
+retry:
+        amdgpu_ttm_placement_from_domain(bo, domains);
         r = ttm_bo_init_reserved(&adev->mman.bdev, &bo->tbo, size, type,
                                  &bo->placement, page_align, &ctx, acc_size,
                                  NULL, resv, &amdgpu_ttm_bo_destroy);
-        if (unlikely(r != 0))
+
+        if (unlikely(r && r != -ERESTARTSYS)) {
+                if (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
+                        bo->flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
+                        goto retry;
+                } else if (domains != bo->preferred_domains) {
+                        domains = bo->allowed_domains;
+                        goto retry;
+                }
+        }
+        if (unlikely(r))
                 return r;
 
         if (adev->gmc.visible_vram_size < adev->gmc.real_vram_size &&