drm/amdgpu: Set VM_L2_CNTL.PDE_FAULT_CLASSIFICATION to 0

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This is recommended by HW designers. Previously when it was set to 1,
the PDE walk error in VM fault will be treated as
PERMISSION_OR_INVALID_PAGE_FAULT rather than usually expected OTHER_FAULT.
As a result, the retry control in VM_CONTEXT*_CNTL will change accordingly.

The above behavior is kind of abnormal. Furthermore, the
PDE_FAULT_CLASSIFICATION == 1 feature was targeted for very old ASICs
and it never made it way to production. Therefore, we should set it to 0.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Yong Zhao 2019-02-25 17:50:43 -05:00 • committed by Alex Deucher

parent 6490bd764c

commit 0cd57eec1b

2 changed files with 2 additions and 2 deletions

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2

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

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2

drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c

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