Re: [PATCH] x86/sev: Check whether SEV or SME is supported first

[Pu Wen]

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