linux-kernel - Re: [PATCH v5 00/13] KVM: mm: fd-based approach for supporting KVM guest private memory

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Message-ID: <20220412130040.GD8013@chaop.bj.intel.com>
Date:   Tue, 12 Apr 2022 21:00:40 +0800
From:   Chao Peng <chao.p.peng@...ux.intel.com>
To:     Vishal Annapurve <vannapurve@...gle.com>
Cc:     Andy Lutomirski <luto@...nel.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-fsdevel@...r.kernel.org, linux-api@...r.kernel.org,
        qemu-devel@...gnu.org, Paolo Bonzini <pbonzini@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H . Peter Anvin" <hpa@...or.com>,
        Hugh Dickins <hughd@...gle.com>,
        Jeff Layton <jlayton@...nel.org>,
        "J . Bruce Fields" <bfields@...ldses.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mike Rapoport <rppt@...nel.org>,
        Steven Price <steven.price@....com>,
        "Maciej S . Szmigiero" <mail@...iej.szmigiero.name>,
        Vlastimil Babka <vbabka@...e.cz>,
        Yu Zhang <yu.c.zhang@...ux.intel.com>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Jun Nakajima <jun.nakajima@...el.com>, dave.hansen@...el.com,
        ak@...ux.intel.com, david@...hat.com
Subject: Re: [PATCH v5 00/13] KVM: mm: fd-based approach for supporting KVM
 guest private memory

On Fri, Apr 08, 2022 at 11:35:05AM -1000, Vishal Annapurve wrote:
> On Mon, Mar 28, 2022 at 10:17 AM Andy Lutomirski <luto@...nel.org> wrote:
> >
> > On Thu, Mar 10, 2022 at 6:09 AM Chao Peng <chao.p.peng@...ux.intel.com> wrote:
> > >
> > > This is the v5 of this series which tries to implement the fd-based KVM
> > > guest private memory. The patches are based on latest kvm/queue branch
> > > commit:
> > >
> > >   d5089416b7fb KVM: x86: Introduce KVM_CAP_DISABLE_QUIRKS2
> >
> > Can this series be run and a VM booted without TDX?  A feature like
> > that might help push it forward.
> >
> > --Andy
> 
> I have posted a RFC series with selftests to exercise the UPM feature
> with normal non-confidential VMs via
> https://lore.kernel.org/kvm/20220408210545.3915712-1-vannapurve@google.com/

Thanks Vishal, this sounds very helpful, it already started to find
bugs.

Chao
> 
> -- Vishal