1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
From a8f31404c26e100189d176a872eb4a1b81f6acd1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Thu, 18 Oct 2018 14:29:28 +0200
Subject: [PATCH 0657/2940] drm/amdgpu: fix amdgpu_vm_fini
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We should not remove mappings in rbtree_postorder_for_each_entry_safe
because that rebalances the tree.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 76d3ca78a1ee..66c976b5ef99 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -3201,8 +3201,10 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
}
rbtree_postorder_for_each_entry_safe(mapping, tmp,
&vm->va.rb_root, rb) {
+ /* Don't remove the mapping here, we don't want to trigger a
+ * rebalance and the tree is about to be destroyed anyway.
+ */
list_del(&mapping->list);
- amdgpu_vm_it_remove(mapping, &vm->va);
kfree(mapping);
}
list_for_each_entry_safe(mapping, tmp, &vm->freed, list) {
--
2.17.1
|
