Alex Waterman bf374b779f gpu: nvgpu: Pass correct va_allocated field in .gmmu_unmap() ...

When nvgpu maps an nvgpu_mem struct the nvgpu driver has a choice of
either using a fixed or non-fixed mapping. For non-fixed mappings the
GMMU APIs allocate a VA space for the caller. In that case the GMMU
APIs must also free that VA range when nvgpu unmaps the nvgpu_mem.

For fixed mappings the GMMU APIs must instead not manage the life
time of the VA space. To support these two possibilities add a field
to nvgpu_mem that specifies whether the GMMU APIs must or must not
free the GPU VA range during the GMMU unmap operation.

Also fix a case in the nvgpu vm_area code that would double free a
VA allocation in some cases (sparse allocs).

Change-Id: Idc32dbb8208fa7c1c05823e67b54707fea51c6b7
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1669920
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2018-03-14 10:04:03 -07:00

25 KiB

Raw Blame History

View Raw