drm/amdgpu: allow huge invalid mappings on GMC8

Only GMC9 supports true huge pages, but we can still free invalid mappings
on GMC8.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 045da0e..1b5a2b2 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1636,7 +1636,8 @@ static int amdgpu_vm_update_ptes(struct amdgpu_pte_update_params *params,
 
                shift = amdgpu_vm_level_shift(adev, cursor.level);
                parent_shift = amdgpu_vm_level_shift(adev, cursor.level - 1);
-               if (adev->asic_type < CHIP_VEGA10) {
+               if (adev->asic_type < CHIP_VEGA10 &&
+                   (flags & AMDGPU_PTE_VALID)) {
                        /* No huge page support before GMC v9 */
                        if (cursor.level != AMDGPU_VM_PTB) {
                                if (!amdgpu_vm_pt_descendant(adev, &cursor))