That means bo isn't per vm bo when vm fini, back to normal bo instead.

Change-Id: Ida56abd0351422dd0b4a4393545c9cdb0e1a6818
Signed-off-by: Chunming Zhou <[email protected]>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 50 +++++++++++++++++++++++++++++-----
 1 file changed, 43 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index a425d498f3fc..89c2cbbce436 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -150,10 +150,34 @@ int amdgpu_vm_lru_init(struct amdgpu_vm_lru *vm_lru, 
struct amdgpu_device *adev,
 int amdgpu_vm_lru_fini(struct amdgpu_vm_lru *vm_lru, struct amdgpu_device 
*adev)
 {
        struct ttm_bo_global *glob = adev->mman.bdev.glob;
+       struct ttm_buffer_object *bo = NULL;
+       struct amdgpu_bo *abo = NULL;
+       struct rb_node *node;
+       int i, j;
+       bool locked;
 
+       locked = reservation_object_trylock(vm_lru->resv);
        spin_lock(&glob->lru_lock);
        list_del(&vm_lru->vm_lru_list);
+       for (i = 0; i < TTM_MAX_BO_PRIORITY; i++) {
+               for (j = 0; j < TTM_NUM_MEM_TYPES; j++) {
+                       list_for_each_entry(bo, &vm_lru->dynamic_lru[j][i], 
lru) {
+                               struct amdgpu_bo *abo = ttm_to_amdgpu_bo(bo);
+
+                               abo->vm_lru = NULL;
+                               abo->index = 0;
+                       }
+                       for (node = rb_first(&vm_lru->fixed_lru[j][i]);
+                            node; node = rb_next(node)) {
+                               abo = rb_entry(node, struct amdgpu_bo, node);
+                               abo->vm_lru = NULL;
+                               abo->index = 0;
+                       }
+               }
+       }
        spin_unlock(&glob->lru_lock);
+       if (locked)
+               reservation_object_unlock(vm_lru->resv);
 
        return 0;
 }
@@ -253,12 +277,16 @@ static void amdgpu_vm_bo_add_to_rb(struct amdgpu_bo *bo,
 void amdgpu_vm_add_to_lru(struct ttm_buffer_object *bo)
 {
        struct ttm_bo_device *bdev = bo->bdev;
-       struct amdgpu_bo *abo = ttm_to_amdgpu_bo(bo);
-       struct amdgpu_vm_lru *vm_lru = abo->vm_lru;
+       struct amdgpu_bo *abo;
+       struct amdgpu_vm_lru *vm_lru = NULL;
        struct ttm_mem_type_manager *man;
 
+       if (bo->destroy != ttm_transfered_destroy) {
+               abo = ttm_to_amdgpu_bo(bo);
+               vm_lru = abo->vm_lru;
+       }
        if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) {
-               if (bo->destroy == ttm_transfered_destroy) {
+               if (bo->destroy == ttm_transfered_destroy || !vm_lru) {
                        BUG_ON(!list_empty(&bo->lru));
 
                        man = &bdev->man[bo->mem.mem_type];
@@ -300,11 +328,15 @@ static struct amdgpu_bo *amdgpu_vm_bo_rb_find(struct 
rb_root *root, u64 index)
 
 void amdgpu_vm_del_from_lru(struct ttm_buffer_object *bo)
 {
-       struct amdgpu_bo *abo = ttm_to_amdgpu_bo(bo);
-       struct amdgpu_vm_lru *vm_lru = abo->vm_lru;
+       struct amdgpu_bo *abo;
+       struct amdgpu_vm_lru *vm_lru;
 
        if (bo->destroy == ttm_transfered_destroy)
                return;
+       abo = ttm_to_amdgpu_bo(bo);
+       vm_lru = abo->vm_lru;
+       if (!vm_lru)
+               return;
        if 
(amdgpu_vm_bo_rb_find(&vm_lru->fixed_lru[bo->mem.mem_type][bo->priority],
                                 abo->index)) {
                rb_erase(&abo->node,
@@ -315,12 +347,16 @@ void amdgpu_vm_del_from_lru(struct ttm_buffer_object *bo)
 
 void amdgpu_vm_move_to_lru_tail(struct ttm_buffer_object *bo)
 {
-       struct amdgpu_bo *abo = ttm_to_amdgpu_bo(bo);
-       struct amdgpu_vm_lru *vm_lru = abo->vm_lru;
+       struct amdgpu_bo *abo;
+       struct amdgpu_vm_lru *vm_lru;
        struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
 
        if (bo->destroy == ttm_transfered_destroy)
                return;
+       abo = ttm_to_amdgpu_bo(bo);
+       vm_lru = abo->vm_lru;
+       if (!vm_lru)
+               return;
        if (bo->resv == vm_lru->resv)
                list_move_tail(&vm_lru->vm_lru_list, &adev->vm_lru_list);
 }
-- 
2.14.1

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