When the client calls vkMapMemory(), we have to align the requested
offset down to the nearest page or else the map will fail. On platforms
where we have DRM_IOCTL_I915_GEM_MMAP_OFFSET, we always map the whole
buffer. In either case, the original map may start before the requested
offset and we need to take that into account when we clflush.
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13610>
Jason Ekstrand
90ac06e502