drm/amdgpu: Use physical translation mode to access page table

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On A+A platform, CPU write page directory and page table in cached
mode. So it is necessary for page table walker to snoop CPU cache.
This setting is necessary for page walker to snoop page directory
and page table data out of CPU cache.

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Acked-by: Christian Konig <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Oak Zeng 2021-01-23 11:34:45 -06:00 • committed by Alex Deucher

parent 35d5f224a5

commit 1f928f5159

2 changed files with 18 additions and 4 deletions

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9

drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c

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13

drivers/gpu/drm/amd/amdgpu/mmhub_v1_7.c

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