drm/amdgpu: add graceful VM fault handling v3

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Next step towards HMM support. For now just silence the retry fault and
optionally redirect the request to the dummy page.

v2: make sure the VM is not destroyed while we handle the fault.
v3: fix VM destroy check, cleanup comments

Signed-off-by: Christian König <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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Christian König 2018-12-07 15:18:43 +01:00 • committed by Alex Deucher

parent b65709a921

commit ec671737f8

3 changed files with 79 additions and 0 deletions

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73

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

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2

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h

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4

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

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