Vedashree Vidwans 2fc673df49 gpu: nvgpu: update nvgpu_mem to accept u64 args ...

Currently, nvgpu_vidmem_buf_access_memory() accepts u64 size/offset
values to access memory. However, underlying nvgpu_mem read and write
functions truncate size/offset value to u32. So, any VIDMEM buffer
larger than 4GB will be inaccessible above 4GB by userspace IOCTL.

This patch updates nvgpu_mem_rd_n() and nvgpu_mem_wr_n() to accept
u64 size and u64 offset values.

BUG-2489032

Change-Id: I299742b1813e5e343a96ce25f649a39e792c3393
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2143138
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vinod Gopalakrishnakurup <vinodg@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2019-06-28 12:28:06 -07:00

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