[PATCH 1/2] drm/amdgpu: Don't change preferred domian when fallback GTT v2

[Chunming Zhou]

v2: add sanity checking

Change-Id: I2cf672ad36b8b4cc1a6b2e704f786bf6a155d9ce
Signed-off-by: Chunming Zhou <david1.zhou at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c    |  5 -----
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 15 +++++++++++++--
 2 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index 6e6570ff9f8b..660f5e44b1a5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -85,11 +85,6 @@ int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
 				flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
 				goto retry;
 			}
-
-			if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
-				initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
-				goto retry;
-			}
 			DRM_DEBUG("Failed to allocate GEM object (%ld, %d, %u, %d)\n",
 				  size, initial_domain, alignment, r);
 		}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index b3310219e0ac..6e714c015a79 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -371,6 +371,7 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev,
 	enum ttm_bo_type type;
 	unsigned long page_align;
 	size_t acc_size;
+	u32 setting_domain;
 	int r;
 
 	page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT;
@@ -440,13 +441,23 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev,
 #endif
 
 	bo->tbo.bdev = &adev->mman.bdev;
-	amdgpu_ttm_placement_from_domain(bo, domain);
+	setting_domain = bo->preferred_domains;
+retry:
+	amdgpu_ttm_placement_from_domain(bo, setting_domain);
 
 	r = ttm_bo_init_reserved(&adev->mman.bdev, &bo->tbo, size, type,
 				 &bo->placement, page_align, &ctx, acc_size,
 				 sg, resv, &amdgpu_ttm_bo_destroy);
-	if (unlikely(r != 0))
+	if (unlikely(r != 0)) {
+		if (r != -ERESTARTSYS &&
+		    (ctx.flags & TTM_OPT_FLAG_ALLOW_RES_EVICT) == 0 &&
+		    setting_domain != bo->allowed_domains &&
+		    type == ttm_bo_type_device){
+			setting_domain = bo->allowed_domains;
+			goto retry;
+		}
 		return r;
+	}
 
 	if (adev->gmc.visible_vram_size < adev->gmc.real_vram_size &&
 	    bo->tbo.mem.mem_type == TTM_PL_VRAM &&
-- 
2.14.1