fcad737cba
If we can't create a staging resource, then fall back to direct CPU mapping (possibly with a stall). This is a rare case, but it could happen for very large staging buffers. Reviewed-by: Dave Airlie <airlied@redhat.com> Tested-by: Mark Janes markjanes@swizzler.org Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18311>