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| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2021-05-10 18:50:11 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-05-19 22:29:56 -0400 |
| commit | 2b2339eeaff597778b042bf0010b87bac33715e2 (patch) | |
| tree | bb7cb99d946bc334a899950ddd177b8fe1d65f98 /drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | |
| parent | 0c6f7777cf37b84839d556a41b9dbeedccfa64d4 (diff) | |
| download | linux-stable-2b2339eeaff597778b042bf0010b87bac33715e2.tar.gz linux-stable-2b2339eeaff597778b042bf0010b87bac33715e2.tar.bz2 linux-stable-2b2339eeaff597778b042bf0010b87bac33715e2.zip | |
drm/amdgpu: Albebaran: MTYPE_NC for coarse-grain remote memory
MTYPE UC was used for a specific use case that ended up not being
implemented. Use NC for better performance for coarse-grained memory where
cache coherence during shader execution is not required.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oak Zeng <Oak.Zeng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c index 941a204d28f5..93ee569f6a63 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c @@ -453,7 +453,8 @@ static uint64_t get_pte_flags(struct amdgpu_device *adev, struct kgd_mem *mem) if (adev->gmc.xgmi.connected_to_cpu) snoop = true; } else { - mapping_flags |= AMDGPU_VM_MTYPE_UC; + mapping_flags |= coherent ? + AMDGPU_VM_MTYPE_UC : AMDGPU_VM_MTYPE_NC; if (amdgpu_xgmi_same_hive(adev, bo_adev)) snoop = true; } |