DRM_MTRR_WC
drm_mtrr_del(0, adev->gmc.aper_base, adev->gmc.aper_size, DRM_MTRR_WC);
drm_mtrr_add(adev->gmc.aper_base, adev->gmc.aper_size, DRM_MTRR_WC);
drm_mtrr_del(0, adev->gmc.aper_base, adev->gmc.aper_size, DRM_MTRR_WC);
dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
drm_mtrr_add(rdev->mc.aper_base, rdev->mc.aper_size, DRM_MTRR_WC);
drm_mtrr_del(0, rdev->mc.aper_base, rdev->mc.aper_size, DRM_MTRR_WC);