linux-kernel - Re: [RFC PATCH 0/5] Extend SEV-SNP SVSM support with a kvm

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Message-ID: <6028e1a0fad729f28451782754417b0be3aea7ed.camel@HansenPartnership.com>
Date: Fri, 18 Oct 2024 11:36:32 -0400
From: James Bottomley <James.Bottomley@...senPartnership.com>
To: roy.hopkins@...e.com
Cc: ashish.kalra@....com, bp@...en8.de, dave.hansen@...ux.intel.com, 
	jroedel@...e.de, kvm@...r.kernel.org, linux-coco@...ts.linux.dev, 
	linux-kernel@...r.kernel.org, michael.roth@....com, mingo@...hat.com, 
	pbonzini@...hat.com, seanjc@...gle.com, tglx@...utronix.de, 
	thomas.lendacky@....com, x86@...nel.org
Subject: Re: [RFC PATCH 0/5] Extend SEV-SNP SVSM support with a kvm_vcpu per
 VMPL

> 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?  Just asking because I haven't
noticed anything about this on the list.

Regards,

James