On Thu, May 27, 2021 at 11:08:32PM +0800, Pu Wen wrote: > Reading MSR_AMD64_SEV which is not implemented on Hygon Dhyana CPU will cause > the kernel reboot, and native_read_msr_safe() has no help. The reason for the reboot is that there is no #GP or #DF handler set up when this MSR is read, so its propagated to a shutdown event. But there is an IDT already, so you can set up early and #GP handler to fix the reboot. Regards, Joerg
