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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2020-05-11 11:35:52 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2020-06-03 15:07:40 +0200 |
| commit | 26d3ac3cb04d171a861952e89324e347598a347f (patch) | |
| tree | 4ba8c046f1a533b2ba10d5322ceca4a6ae46b8f2 /drivers/gpu/drm/drm_gem_shmem_helper.c | |
| parent | 0cc5fb4e87216320e5bc42603f735d666e101e43 (diff) | |
| download | linux-26d3ac3cb04d171a861952e89324e347598a347f.tar.gz | |
drm/shmem-helpers: Redirect mmap for imported dma-buf
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
Tested-by: Boris Brezillon <boris.brezillon@collabora.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200511093554.211493-8-daniel.vetter@ffwll.ch
Diffstat (limited to 'drivers/gpu/drm/drm_gem_shmem_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_gem_shmem_helper.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c index 0aac83ed9f5d..afe9668f1750 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); |