This is required to use buffers allocated by vgem on AMD and ARM devices.
We're experiencing a case where eviction of the cache races with userspace
writes. To fix this, flush the cache after retrieving a page.
Signed-off-by: Gurchetan Singh <gurchetansi...@chromium.org>
---
drivers/gpu/drm/vgem/vgem_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c
index 35bfdfb746a7..fb263969f02d 100644
--- a/drivers/gpu/drm/vgem/vgem_drv.c
+++ b/drivers/gpu/drm/vgem/vgem_drv.c
@@ -112,6 +112,7 @@ static int vgem_gem_fault(struct vm_fault *vmf)
break;
}
+ drm_flush_pages(obj->base.dev->dev, &page, 1);
}
return ret;
}
--
2.13.5
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
