drm_gem_mmap9

Memory map routine for gem objects

Arguments

filp

DRM file pointer

vma

VMA for the area to be mapped

Overview

If a driver supports GEM object mapping, mmap calls on the DRM file descriptor will end up here.

Look up the GEM object based on the offset passed in (vma->vm_pgoff will contain the fake offset we created when the GTT map ioctl was called on the object) and map it with a call to drm_gem_mmap_obj.

If the caller is not granted access to the buffer object, the mmap will fail with EACCES. Please see the vma manager for more information.