diff options
| author | Zhigang Luo <Zhigang.Luo@amd.com> | 2026-08-31 15:39:03 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-10-07 12:04:31 -0400 |
| commit | a69f4d4076eab6b88901d41fcf129f14c74eb763 (patch) | |
| tree | 2803ff70ab8fd0c2289a419f62dd1682870759bf /drivers | |
| parent | 3d3140b5b0d0140dce34bffa6ebe84ad0687c477 (diff) | |
drm/amdkfd: mark A+A VF VRAM PTEs as system memory
On the A+A VF, VRAM is accessed through the system memory path, so SVM
range PTEs that point at VRAM need AMDGPU_PTE_SYSTEM set, matching what
the graphics paths already do.
v2:
- Use (sriov_vf || passthrough) and amdgpu_virt_vram_is_spm() for
SVM VRAM PTE_SYSTEM.
v3:
- Rely on amdgpu_virt_vram_is_spm() without redundant VF/passthrough
checks.
Signed-off-by: Zhigang Luo <zhigang.luo@amd.com>
Signed-off-by: Fangsheng Huang <Fangsheng.Huang@amd.com>
Signed-off-by: YuBiao Wang <YuBiao.Wang@amd.com>
Reviewed-by: Philip Yang <philip.yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index 671193fb1203..cfb428c72686 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c @@ -1384,7 +1384,13 @@ svm_range_get_pte_flags(struct kfd_node *node, struct amdgpu_vm *vm, mapping_flags |= AMDGPU_VM_PAGE_EXECUTABLE; pte_flags = AMDGPU_PTE_VALID; - pte_flags |= (domain == SVM_RANGE_VRAM_DOMAIN) ? 0 : AMDGPU_PTE_SYSTEM; + /* SPM-backed VRAM is accessed through the system memory path and + * requires the SYSTEM bit. + */ + if (amdgpu_virt_vram_is_spm(node->adev)) + pte_flags |= AMDGPU_PTE_SYSTEM; + else + pte_flags |= (domain == SVM_RANGE_VRAM_DOMAIN) ? 0 : AMDGPU_PTE_SYSTEM; pte_flags |= snoop ? AMDGPU_PTE_SNOOPED : 0; if (gc_ip_version >= IP_VERSION(12, 0, 0)) pte_flags |= AMDGPU_PTE_IS_PTE; |