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[AMD Official Use Only]
ping...
Best Regards,
Kevin
From: Wang, Yang(Kevin) <KevinYang.Wang@xxxxxxx>
Sent: Wednesday, January 19, 2022 11:16 AM To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx> Cc: Min, Frank <Frank.Min@xxxxxxx>; Chen, Horace <Horace.Chen@xxxxxxx>; Wang, Yang(Kevin) <KevinYang.Wang@xxxxxxx> Subject: [PATCH] drm/amdgpu: force using sdma to update vm page table when mmio is blocked 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 |
