6.18-stable review patch. If anyone has any objections, please let me know.
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From: Thomas Hellström thomas.hellstrom@linux.intel.com
commit 449bcd5d45eb4ce26740f11f8601082fe734bed2 upstream.
Some Xe bos are allocated with extra backing-store for the CCS metadata. It's never been the intention to share the CCS metadata when exporting such bos as dma-buf. Don't include it in the dma-buf sg-table.
Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs") Cc: Rodrigo Vivi rodrigo.vivi@intel.com Cc: Matthew Brost matthew.brost@intel.com Cc: Maarten Lankhorst maarten.lankhorst@linux.intel.com Cc: stable@vger.kernel.org # v6.8+ Signed-off-by: Thomas Hellström thomas.hellstrom@linux.intel.com Reviewed-by: Matthew Brost matthew.brost@intel.com Reviewed-by: Karol Wachowski karol.wachowski@linux.intel.com Link: https://patch.msgid.link/20251209204920.224374-1-thomas.hellstrom@linux.inte... (cherry picked from commit a4ebfb9d95d78a12512b435a698ee6886d712571) Signed-off-by: Thomas Hellström thomas.hellstrom@linux.intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/xe/xe_dma_buf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/xe/xe_dma_buf.c +++ b/drivers/gpu/drm/xe/xe_dma_buf.c @@ -113,7 +113,7 @@ static struct sg_table *xe_dma_buf_map(s case XE_PL_TT: sgt = drm_prime_pages_to_sg(obj->dev, bo->ttm.ttm->pages, - bo->ttm.ttm->num_pages); + obj->size >> PAGE_SHIFT); if (IS_ERR(sgt)) return sgt;