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(parent: 19e8549) | patch
drm/amdgpu: set snoop bit in pde/pte entries for A+A
authorEric Huang <jinhuieric.huang@amd.com>
Sat, 27 Feb 2021 22:46:44 +0000 (17:46 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 24 Mar 2021 03:00:46 +0000 (23:00 -0400)
commit70caf9c2434a5f73daecb5d2012ff651ac84b95c
tree1dcb4318275ffd012c4b8bcdf9f47a4716bc0c60tree | snapshot
parent19e85492e60a5a9bf2ecfef27ae72006cbdf8c7bcommit | diff
drm/amdgpu: set snoop bit in pde/pte entries for A+A

Page tables in vram mapping to cpu is changed from uncached to
cached in A+A, the snoop bit in VM_CONTEXTx_PAGE_TABLE_BASE_ADDR/
PDE0s/PDE1s/PDE2s/PTE.TFs has to be set so gpuvm walker snoop
page table data out of CPU cache.

Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c diff | blob | history
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