On 2021/5/31 17:37, Joerg Roedel wrote: > 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. Thanks for your suggestion, I'll try to set up early #GP handler to fix the problem. -- Regards, Pu Wen
