On 23/09/21 02:59, Hao Xiang wrote:
EXIT_REASON.bus_lock_detected may or may not be set when exit_reason=EXIT_REASON_BUS_LOCK, It clould depend on hardware implementaion. No matter when intel states it clearly, I think it is better that we avoid repeated assignment by adding additional check condition in vmx_handle_exit. Of course , it is also ok that hand_bus_lock_vmexit do nothing , but the code is not clear, and the code logic will be inconsistent with spec description.
For 5.16 we'll go with something like Sean's sketch, that sets the bus_lock_detected bit on EXIT_REASON_BUS_LOCK.
Paolo
