From: Eric Huang Date: Sat, 27 Feb 2021 21:51:19 +0000 (-0500) Subject: drm/amdgpu: set CPU mapping of vram as cached for A+A mode X-Git-Tag: v5.13-rc1~123^2~12^2~128 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=06bfc045d54cd7cb769aab5af45f6022c2ce77a7;p=thirdparty%2Fkernel%2Flinux.git drm/amdgpu: set CPU mapping of vram as cached for A+A mode New A+A HW supports cached vram mapped to cpu. Signed-off-by: Eric Huang Reviewed-by: Christian König Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 0ea1b68e7bb9f..c5fea144b759d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -673,7 +673,10 @@ static int amdgpu_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_reso mem->bus.offset += adev->gmc.aper_base; mem->bus.is_iomem = true; - mem->bus.caching = ttm_write_combined; + if (adev->gmc.xgmi.connected_to_cpu) + mem->bus.caching = ttm_cached; + else + mem->bus.caching = ttm_write_combined; break; default: return -EINVAL;