[PATCH v3 2/2] drm/amdgpu: Put page tables to GTT memory for gfx10 onwards APUs

[Yifan Zhang]

To decrease VRAM pressure for APUs, put page tables to
GTT domain for gfx10 and newer APUs.

v2: only enable it for gfx10 and newer APUs (Alex, Christian)

Signed-off-by: Yifan Zhang <yifan1.zhang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
index 96d601e209b8..4603d87c61a0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
@@ -515,10 +515,13 @@ int amdgpu_vm_pt_create(struct amdgpu_device *adev, struct amdgpu_vm *vm,
 	bp.size = amdgpu_vm_pt_size(adev, level);
 	bp.byte_align = AMDGPU_GPU_PAGE_SIZE;
 
-	if (!adev->gmc.is_app_apu)
-		bp.domain = AMDGPU_GEM_DOMAIN_VRAM;
-	else
+	if (adev->gmc.is_app_apu ||
+		((adev->flags & AMD_IS_APU) &&
+		(adev->ip_versions[GC_HWIP][0] >= IP_VERSION(10, 3, 3))))
 		bp.domain = AMDGPU_GEM_DOMAIN_GTT;
+	else
+		bp.domain = AMDGPU_GEM_DOMAIN_VRAM;
+
 
 	bp.domain = amdgpu_bo_get_preferred_domain(adev, bp.domain);
 	bp.flags = AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS |
-- 
2.37.3