We can't explicitly control the mmap caching type for discrete, but using mmap_device_coherent should be good enough here on such devices. Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/4842 Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx> Cc: Gwan-gyeong Mun <gwan-gyeong.mun@xxxxxxxxx> --- lib/intel_bufops.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/lib/intel_bufops.c b/lib/intel_bufops.c index 05c0b0d4..c63a5760 100644 --- a/lib/intel_bufops.c +++ b/lib/intel_bufops.c @@ -451,11 +451,16 @@ static void __copy_ccs(struct buf_ops *bops, struct intel_buf *buf, ccs_size = CCS_SIZE(gen, buf); size = offset + ccs_size; - map = __gem_mmap_offset__wc(bops->fd, buf->handle, 0, size, - PROT_READ | PROT_WRITE); - if (!map) - map = gem_mmap__wc(bops->fd, buf->handle, 0, size, - PROT_READ | PROT_WRITE); + if (gem_has_lmem(bops->fd)) { + map = gem_mmap__device_coherent(bops->fd, buf->handle, 0, size, + PROT_READ | PROT_WRITE); + } else { + map = __gem_mmap_offset__wc(bops->fd, buf->handle, 0, size, + PROT_READ | PROT_WRITE); + if (!map) + map = gem_mmap__wc(bops->fd, buf->handle, 0, size, + PROT_READ | PROT_WRITE); + } switch (dir) { case CCS_LINEAR_TO_BUF: -- 2.36.1
