when mmio protection feature is enabled in hypervisor,
it will cause guest OS can't R/W HDP regiters,
and using cpu to update page table is not working well.
force using sdma to update page table when mmio is blocked.
Signed-off-by: Yang Wang <KevinYang.Wang@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index b23cb463b106..0f86f0b2e183 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -2959,6 +2959,9 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm)
vm->use_cpu_for_update = !!(adev->vm_manager.vm_update_mode &
AMDGPU_VM_USE_CPU_FOR_GFX);
+ if (vm->use_cpu_for_update && amdgpu_sriov_vf(adev) && amdgpu_virt_mmio_blocked(adev))
+ vm->use_cpu_for_update = false;
+
DRM_DEBUG_DRIVER("VM update mode is %s\n",
vm->use_cpu_for_update ? "CPU" : "SDMA");
WARN_ONCE((vm->use_cpu_for_update &&
@@ -3094,6 +3097,10 @@ int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm)
/* Update VM state */
vm->use_cpu_for_update = !!(adev->vm_manager.vm_update_mode &
AMDGPU_VM_USE_CPU_FOR_COMPUTE);
+
+ if (vm->use_cpu_for_update && amdgpu_sriov_vf(adev) && amdgpu_virt_mmio_blocked(adev))
+ vm->use_cpu_for_update = false;
+
DRM_DEBUG_DRIVER("VM update mode is %s\n",
vm->use_cpu_for_update ? "CPU" : "SDMA");
WARN_ONCE((vm->use_cpu_for_update &&
--
2.25.1
