nouveau: fix mapping 2MB sysmem pages
The nvif_object_ioctl() method NVIF_VMM_V0_PFNMAP wasn't correctly setting the hardware specific GPU page table entries for 2MB sized pages. Fix this by adding functions to set and clear PD0 GPU page table entries. Link: https://lore.kernel.org/r/20200701225352.9649-4-rcampbell@nvidia.comSigned-off-by:Ralph Campbell <rcampbell@nvidia.com> Signed-off-by:
Jason Gunthorpe <jgg@nvidia.com>
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