4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx> [ Upstream commit d8de8260a45aae8f74af77eae9a162bdc0ed48d2 ] 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@xxxxxxx> Reviewed-by: Christian König <christian.koenig@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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(-) --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c @@ -66,6 +66,7 @@ int amdgpu_job_alloc(struct amdgpu_devic 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; } --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -714,7 +714,8 @@ int amdgpu_vm_flush(struct amdgpu_ring * } 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;
