HI Christian:
if (bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS ||
- amdgpu_vram_page_split == -1) {
+ place->lpfn || amdgpu_vram_page_split == -1) {
pages_per_node = ~0ul;
num_nodes = 1;
} else {
Here , checking place->lpfn , is that mean if required place is located in
visible vram, driver run none pages split code path?
if so, seem it comes back to the starting point. In extreme cases, allocate
visible vram fail.
Thanks
JimQu
________________________________________
发件人: amd-gfx <[email protected]> 代表 Christian König
<[email protected]>
发送时间: 2016年11月4日 19:00
收件人: [email protected]
主题: [PATCH 1/2] drm/amdgpu: disable the VRAM manager on special placements v2
From: Christian König <[email protected]>
This disables the VRAM manager when a special placement is requested, otherwise
we play ping/pong with the buffers on every command submission.
v2: only check lpfn
Signed-off-by: Christian König <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
index 180eed7c..d710226 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
@@ -108,7 +108,7 @@ static int amdgpu_vram_mgr_new(struct ttm_mem_type_manager
*man,
lpfn = man->size;
if (bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS ||
- amdgpu_vram_page_split == -1) {
+ place->lpfn || amdgpu_vram_page_split == -1) {
pages_per_node = ~0ul;
num_nodes = 1;
} else {
--
2.5.0
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