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Will be used by the UMD to optimize CPU accesses to buffers that are frequently read by the CPU, or on which the access pattern makes non-cacheable mappings inefficient. Mapping buffers CPU-cached implies taking care of the CPU cache maintenance in the UMD, unless the GPU is IO coherent. v2: - Add more to the commit message v3: - No changes v4: - Fix the map_wc test in panfrost_ioctl_query_bo_info() v5: - Drop Steve's R-b (enough has changed to justify a new review) v6: - Collect R-b v7: - No changes v8: - Fix double drm_gem_object_funcs::export assignment Signed-off-by: Faith Ekstrand <faith.ekstrand@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patch.msgid.link/20251208100841.730527-13-boris.brezillon@collabora.com Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>