Deepak Nibade f919aab509 gpu: nvgpu: add safety for vidmem addresses ...

Add new API set_vidmem_page_alloc() which sets BIT(0)
in sg_dma_address() only for vidmem allocation

Add and use new API get_vidmem_page_alloc() which
receives scatterlist and returns pointer to vidmem
allocation i.e. struct gk20a_page_alloc *alloc
In this API, check if BIT(0) is set or not in
sg_dma_address() before converting it to allocation
address

In gk20a_mm_smmu_vaddr_translate(), ensure that
the address is pure IOVA address by verifying that
BIT(0) is not set in that address

Jira DNVGPU-22

Change-Id: Ib53ff4b63ac59a8d870bc01d0af59839c6143334
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1216142
(cherry picked from commit 03c9fbdaa40746dc43335cd8fbe9f97ef2ef50c9)
Reviewed-on: http://git-master/r/1219705
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2016-09-15 12:24:45 -07:00

..

nvgpu

gpu: nvgpu: add safety for vidmem addresses

2016-09-15 12:24:45 -07:00