| Message ID | 1599625320-17637-2-git-send-email-chenhc@lemote.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | [1/2] drm/radeon: Don't use WC for VRAM if !RADEON_GEM_GTT_WC | expand |
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 5ac7b55..04299f5 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -136,8 +136,10 @@ void amdgpu_bo_placement_from_domain(struct amdgpu_bo *abo, u32 domain) places[c].fpfn = 0; places[c].lpfn = 0; - places[c].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | - TTM_PL_FLAG_VRAM; + places[c].flags = TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM; + + if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC) + places[c].flags |= TTM_PL_FLAG_WC; if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) places[c].lpfn = visible_pfn;
Though AMDGPU_GEM_CREATE_CPU_GTT_USWC is initially used for GTT, but this flag is bound to drm_arch_can_wc_memory(), and if arch doesn't support WC, then VRAM should not use WC. Signed-off-by: Huacai Chen <chenhc@lemote.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)