Commits
Michel Dänzer committed 1490434f0da
drm/radeon: Use write-combined CPU mappings of ring buffers with PCIe PCI GART doesn't support unsnooped access. AGP GART already uses write-combined CPU mappings. Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>