blob: 90ae2f43fcc8a3fbb66e74bfb9bf2b283e3d5325 (
plain)
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
38
39
40
41
|
From 5f7db09fea3a1ec2af9c15e7cb4b4d6a683a08ea Mon Sep 17 00:00:00 2001
From: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Date: Thu, 7 Sep 2017 13:23:21 +0200
Subject: [PATCH 0913/4131] drm/amdgpu: Account for shadow PTs in mapping
update IB size.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
When amdgpu_vm_frag_ptes calls amdgpu_vm_update_ptes and the pt
has a shadow PT we mirror all the write to the shadow PT too, which
results in twice the commands.
Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Christian König <christian.koenig@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 0c1cbb9..efa8136 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1536,10 +1536,12 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev,
nptes = last - start + 1;
/*
- * reserve space for one command every (1 << BLOCK_SIZE)
+ * reserve space for two commands every (1 << BLOCK_SIZE)
* entries or 2k dwords (whatever is smaller)
+ *
+ * The second command is for the shadow pagetables.
*/
- ncmds = (nptes >> min(adev->vm_manager.block_size, 11u)) + 1;
+ ncmds = ((nptes >> min(adev->vm_manager.block_size, 11u)) + 1) * 2;
/* padding, etc. */
ndw = 64;
--
2.7.4
|
