Re: [RFC PATCH 0/5] Extend SEV-SNP SVSM support with a kvm_vcpu per VMPL

[Paolo Bonzini]

On 10/21/24 21:51, Sean Christopherson wrote:
> On Fri, Oct 18, 2024, James Bottomley wrote:
> > > I've prepared this series as an extension to the RFC patch series:
> > > 'SEV-SNP support for running an SVSM' posted by Tom Lendacky [1].
> > > This extends the support for transitioning a vCPU between VM
> > > Privilege Levels (VMPLs) by storing the vCPU state for each VMPL in
> > > its own `struct kvm_vcpu`. This additionally allows for separate
> > > APICs for each VMPL.
> >
> > I couldn't attend KVM forum, but I understand based on feedback at a
> > session there, Paolo took the lead to provide an architecture document
> > for this feature, is that correct?
>
> Yep.
>
> > Just asking because I haven't noticed anything about this on the list.
>
> Heh, there's quite a queue of blocked readers (and writers!) at this point ;-)

Well, at least one person had a writer's block instead.

I had it almost ready but then noticed a few hiccups in the design we 
came up with, and have been seating on it for a while.  I'm sending it 
now, finishing the commit messages.

Paolo