Konsta Holtta 6706e4c406 gpu: nvgpu: support userspace vidmem mappings ...

When mapping a userspace buffer, determine if it was vidmem allocated
from the aperture of the current gpu, and pass that information into
page tables.

Mapping a vidmem buffer to a gpu it wasn't allocated from is disallowed.
This includes mapping vidmem to igpus and to possibly other dgpus on the
system.

Jira DNVGPU-19

Change-Id: Ia9d2d0133e77659ab96b36ed61eeb4cd5a2b7dff
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/1169309
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>

2016-07-21 05:58:25 -07:00

..

gpu/nvgpu

gpu: nvgpu: support userspace vidmem mappings

2016-07-21 05:58:25 -07:00