Re: [PATCH v5 00/75] x86: SEV-ES Guest Support

[Joerg Roedel]

Hi Mike,

On Thu, Jul 30, 2020 at 01:27:48AM +0000, Mike Stunes wrote:
> Thanks for the updated patches! I applied this patch-set onto commit
> 01634f2bd42e ("Merge branch 'x86/urgentââ) from your tree. It boots,
> but CPU 1 (on a two-CPU VM) is offline at boot, and `chcpu -e 1` returns:
> 
> chcpu: CPU 1 enable failed: Input/output error
> 
> with nothing in dmesg to indicate why it failed. The first thing I thought
> of was anything relating to the AP jump table, but I havenât changed
> anything there on the hypervisor side. Let me know what other data I can
> provide for you.

Hard to tell, have you enabled FSGSBASE in the guest? If yes, can you
try to disable it?

Regards,

	Joerg