On 1/31/2025 11:21, Alex Deucher wrote:
If the user has configured a large carveout on a small APU,
only use GTT for VRAM allocations if GTT is larger than
VRAM.
v2: fix reversed check (Philip)
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 32b42f1104623..1b8d7c4889341 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1989,8 +1989,10 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
DRM_INFO("amdgpu: %uM of GTT memory ready.\n",
(unsigned int)(gtt_size / (1024 * 1024)));
- if (adev->flags & AMD_IS_APU)
- adev->apu_prefer_gtt = true;
+ if (adev->flags & AMD_IS_APU) {
+ if (adev->gmc.real_vram_size < gtt_size)
+ adev->apu_prefer_gtt = true;
+ }
/* Initialize doorbell pool on PCI BAR */
r = amdgpu_ttm_init_on_chip(adev, AMDGPU_PL_DOORBELL, adev->doorbell.size / PAGE_SIZE);
For both patches:
Reviewed-by: Mario Limonciello <mario.limonciello@xxxxxxx>
