drm/amdgpu: must update page table after gpu reset
Record the gpu reset count in vmid to identify if gpu reset happened.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 7df1f48..0c8be66 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -897,6 +897,8 @@
/* last flushed PD/PT update */
struct fence *flushed_updates;
+ uint32_t current_gpu_reset_count;
+
uint32_t gds_base;
uint32_t gds_size;
uint32_t gws_base;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index ea10b7a..be09416 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -255,6 +255,8 @@
/* Check all the prerequisites to using this VMID */
if (!id)
continue;
+ if (id->current_gpu_reset_count != atomic_read(&adev->gpu_reset_counter))
+ continue;
if (atomic64_read(&id->owner) != vm->client_id)
continue;
@@ -278,6 +280,7 @@
if (r)
goto error;
+ id->current_gpu_reset_count = atomic_read(&adev->gpu_reset_counter);
list_move_tail(&id->list, &adev->vm_manager.ids_lru);
vm->ids[ring->idx] = id;