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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ZxawyGnWfo378f3S@google.com>
Date: Mon, 21 Oct 2024 12:51:36 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: James Bottomley <James.Bottomley@...senpartnership.com>
Cc: roy.hopkins@...e.com, 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, 
	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

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 ;-)