Currently this seems to work by converting the sgt into a pages array,
and then treating it like a native object. Do the right thing and
redirect mmap to the exporter.
With this nothing is calling get_pages anymore on imported dma-buf,
and we can start to remove the use of the ->pages array for that case.
v2: Rebase
Cc: Gerd Hoffmann <kra...@redhat.com>
Cc: Rob Herring <r...@kernel.org>
Cc: Noralf Trønnes <nor...@tronnes.org>
Signed-off-by: Daniel Vetter <daniel.vet...@intel.com>
---
drivers/gpu/drm/drm_gem_shmem_helper.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c
b/drivers/gpu/drm/drm_gem_shmem_helper.c
index b9cba5cc61c3..117a7841e284 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -551,6 +551,9 @@ int drm_gem_shmem_mmap(struct drm_gem_object *obj, struct
vm_area_struct *vma)
/* Remove the fake offset */
vma->vm_pgoff -= drm_vma_node_start(&obj->vma_node);
+ if (obj->import_attach)
+ return dma_buf_mmap(obj->dma_buf, vma, 0);
+
shmem = to_drm_gem_shmem_obj(obj);
ret = drm_gem_shmem_get_pages(shmem);
--
2.26.2
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