After GPU reset amdgpu_vm_clear_bo triggers VM flush but job->vm_pd_addr is not set causing SDMA TO. v2: Per advise by Christian König avoid flushing VM for jobs where job->vm_pd_addr wasn't explicitly set. v3: Shortcut vm_flush_needed early. Fixes cbd5285 drm/amdgpu: move setting the GART addr into TTM. Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c index 34e54d4..755f733 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c @@ -73,6 +73,7 @@ int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs, amdgpu_sync_create(&(*job)->sync); amdgpu_sync_create(&(*job)->sched_sync); (*job)->vram_lost_counter = atomic_read(&adev->vram_lost_counter); + (*job)->vm_pd_addr = AMDGPU_BO_INVALID_OFFSET; return 0; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index f5a9600..f5fdbb6 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -852,7 +852,8 @@ int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job, bool need_ } gds_switch_needed &= !!ring->funcs->emit_gds_switch; - vm_flush_needed &= !!ring->funcs->emit_vm_flush; + vm_flush_needed &= !!ring->funcs->emit_vm_flush && + job->vm_pd_addr != AMDGPU_BO_INVALID_OFFSET; pasid_mapping_needed &= adev->gmc.gmc_funcs->emit_pasid_mapping && ring->funcs->emit_wreg; -- 2.7.4
