Re: [PATCH Part2 v5 05/45] x86/sev: Add helper functions for RMPUPDATE and PSMASH instruction

Sean Christopherson
2021-10-15T20:27:36Z

On Fri, Oct 15, 2021, Brijesh Singh wrote:
> On 10/15/21 1:05 PM, Sean Christopherson wrote:
> > On Fri, Aug 20, 2021, Brijesh Singh wrote:
> >> + if (!cpu_feature_enabled(X86_FEATURE_SEV_SNP))
> > Shouldn't this be a WARN_ON_ONCE()?
>
> Since some of these function are called while handling the PSC so I
> tried to avoid using the WARN -- mainly because if the warn_on_panic=1
> is set on the host then it will result in the kernel panic.

But why would KVM be handling PSC requests if SNP is disabled?