[PATCH 1/7] drm/amdgpu: move VM PDEs to idle after update

[Christian König]

Move the page tables to the idle list after updating the PDEs.

We have gone back and forth with that a couple of times because of problems
with the inter PD dependencies, but it should work now that we have the
state handling cleanly separated.

Signed-off-by: Christian König <christian.koe...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 42 ++++++--------------------
 1 file changed, 10 insertions(+), 32 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index fc4563cf2828..eb9b86466336 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1363,25 +1363,6 @@ static int amdgpu_vm_update_pde(struct 
amdgpu_vm_update_params *params,
                                        1, 0, flags);
 }
 
-/**
- * amdgpu_vm_invalidate_pds - mark all PDs as invalid
- *
- * @adev: amdgpu_device pointer
- * @vm: related vm
- *
- * Mark all PD level as invalid after an error.
- */
-static void amdgpu_vm_invalidate_pds(struct amdgpu_device *adev,
-                                    struct amdgpu_vm *vm)
-{
-       struct amdgpu_vm_pt_cursor cursor;
-       struct amdgpu_vm_bo_base *entry;
-
-       for_each_amdgpu_vm_pt_dfs_safe(adev, vm, NULL, cursor, entry)
-               if (entry->bo && !entry->moved)
-                       amdgpu_vm_bo_relocated(entry);
-}
-
 /**
  * amdgpu_vm_update_pdes - make sure that all directories are valid
  *
@@ -1398,6 +1379,7 @@ int amdgpu_vm_update_pdes(struct amdgpu_device *adev,
                          struct amdgpu_vm *vm, bool immediate)
 {
        struct amdgpu_vm_update_params params;
+       struct amdgpu_vm_bo_base *entry;
        int r, idx;
 
        if (list_empty(&vm->relocated))
@@ -1413,16 +1395,9 @@ int amdgpu_vm_update_pdes(struct amdgpu_device *adev,
 
        r = vm->update_funcs->prepare(&params, NULL, AMDGPU_SYNC_EXPLICIT);
        if (r)
-               goto exit;
-
-       while (!list_empty(&vm->relocated)) {
-               struct amdgpu_vm_bo_base *entry;
-
-               entry = list_first_entry(&vm->relocated,
-                                        struct amdgpu_vm_bo_base,
-                                        vm_status);
-               amdgpu_vm_bo_idle(entry);
+               goto error;
 
+       list_for_each_entry(entry, &vm->relocated, vm_status) {
                r = amdgpu_vm_update_pde(&params, vm, entry);
                if (r)
                        goto error;
@@ -1431,12 +1406,15 @@ int amdgpu_vm_update_pdes(struct amdgpu_device *adev,
        r = vm->update_funcs->commit(&params, &vm->last_update);
        if (r)
                goto error;
-       drm_dev_exit(idx);
-       return 0;
+
+       while (!list_empty(&vm->relocated)) {
+               entry = list_first_entry(&vm->relocated,
+                                        struct amdgpu_vm_bo_base,
+                                        vm_status);
+               amdgpu_vm_bo_idle(entry);
+       }
 
 error:
-       amdgpu_vm_invalidate_pds(adev, vm);
-exit:
        drm_dev_exit(idx);
        return r;
 }
-- 
2.25.1