diff options
| author | Christian König <christian.koenig@amd.com> | 2018-12-07 15:18:43 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-09-16 10:42:55 -0500 |
| commit | ec671737f8edfb8edf246afd425fdbed35284b23 (patch) | |
| tree | 10c9ba5161733d391d5430f85a66de07922925f9 /drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | |
| parent | b65709a92156b850840edba9f9932e10c235d44e (diff) | |
drm/amdgpu: add graceful VM fault handling v3
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>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index a991a6c4f468..6102deaa03ca 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -380,6 +380,10 @@ static int gmc_v9_0_process_interrupt(struct amdgpu_device *adev, } /* If it's the first fault for this address, process it normally */ + if (retry_fault && !in_interrupt() && + amdgpu_vm_handle_fault(adev, entry->pasid, addr)) + return 1; /* This also prevents sending it to KFD */ + if (!amdgpu_sriov_vf(adev)) { /* * Issue a dummy read to wait for the status register to |