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b06d66be3b
Previously these functions would assume that vma->vm_file was the drm_file. Although if in some cases if the drm driver needs to use something else for the backing file (such as the tmpfs filp) then this assumption is no longer true. But vma->vm_private_data is still the GEM object. With this change, now the drm_device comes from the GEM object rather than the drm_file so the driver is more free to play with vma->vm_file. The scenario where this comes up is for mmap'ing of cached dmabuf's for non-coherent systems, where the driver needs to use fault handling and PTE shootdown to simulate coherency. We can't use the vma->vm_file of the dmabuf, which is using anon_inode's address_space. The most straightforward thing to do is to use the GEM object's obj->filp for vma->vm_file in all cases, for which we need this patch. Signed-off-by: Rob Clark <rob@ti.com> Signed-off-by: Dave Airlie <airlied@redhat.com> |
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| vga | ||
| Makefile | ||