v3d: never replace a mapped bo

The application might have a pointer into the mapped bo. Reviewed-by: Iago Toral Quiroga <itoral@igalia.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25362>
2024-06-12 21:59:19 +02:00
parent e5c4ea9323
commit 0b85476d86
1 changed files with 4 additions and 0 deletions
@@ -101,6 +101,10 @@ v3d_resource_bo_alloc(struct v3d_resource *rsc)
        struct pipe_screen *pscreen = prsc->screen;
        struct v3d_bo *bo;

+        /* never replace a mapped bo */
+        if (rsc->bo && rsc->bo->map)
+                return false;
+
        /* Buffers may be read using ldunifa, which prefetches the next
         * 4 bytes after a read. If the buffer's size is exactly a multiple
         * of a page size and the shader reads the last 4 bytes with ldunifa