I have no problem dropping the AMDGPU_GEM_CREATE_NO_CPU_ACCESS flag from
page tables no matter if we have large BAR or not.
That should only be necessary when BOs are pinned and since we never pin
page tables it shouldn't matter.
Just set AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED after switching
Can we change the flags if needed. E.g. see what
amdgpu_bo_pin_restricted does:
if (!(bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS))
bo->flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
amdgpu_bo_placement_from_domain(bo, domain);
This shouldn't really change anyth
If a same GPU VM is shared by kfd and graphic operations, we must align
the vm update mode to sdma, or cpu kmap will fail and cause null pointer
issue.
Signed-off-by: YuBiao Wang
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm
