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drm/amdgpu: handle gang submit before VMID

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Otherwise it can happen that not all gang members can get a VMID
assigned and we deadlock.

Signed-off-by: Christian König <christian.koenig@amd.com>
Tested-by: Timur Kristóf <timur.kristof@gmail.com>
Acked-by: Timur Kristóf <timur.kristof@gmail.com>
Fixes: 68ce8b2422 ("drm/amdgpu: add gang submit backend v2")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221118153023.312582-1-christian.koenig@amd.com
This commit is contained in:
Christian König 2022-11-18 13:32:30 +01:00
parent 5954acbacb
commit b09d6acba1
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
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@ -254,6 +254,9 @@ static struct dma_fence *amdgpu_job_dependency(struct drm_sched_job *sched_job,
DRM_ERROR("Error adding fence (%d)\n", r);
}
if (!fence && job->gang_submit)
fence = amdgpu_device_switch_gang(ring->adev, job->gang_submit);
while (fence == NULL && vm && !job->vmid) {
r = amdgpu_vmid_grab(vm, ring, &job->sync,
&job->base.s_fence->finished,
@ -264,9 +267,6 @@ static struct dma_fence *amdgpu_job_dependency(struct drm_sched_job *sched_job,
fence = amdgpu_sync_get_fence(&job->sync);
}
if (!fence && job->gang_submit)
fence = amdgpu_device_switch_gang(ring->adev, job->gang_submit);
return fence;
}