Am 07.11.18 um 18:29 schrieb Alex Deucher:
Use page queue 0 rather than 1 to avoid contention with GPUVM
updates using page queue 0.
Well NAK for two reasons:
1. VM updates are currently balanced between page queue 0 and 1.
2. I want to keep one paging queue reserved for fault processing in the
long term.
Christian.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index 4b5b47dd2f4c..44c16a5c5428 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -2062,7 +2062,8 @@ static void sdma_v4_0_set_buffer_funcs(struct amdgpu_device *adev)
{
adev->mman.buffer_funcs = &sdma_v4_0_buffer_funcs;
if (adev->sdma.has_page_queue)
- adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].page;
+ /* use page queue 1 since page queue 0 will be used for VM updates */
+ adev->mman.buffer_funcs_ring = &adev->sdma.instance[1].page;
else
adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
}
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