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From:   Vishal Annapurve <vannapurve@google.com>
Date:   Fri, 8 Apr 2022 11:35:05 -1000
Message-ID: <CAGtprH9DGyxSKSwVhc0Td3x-M4-C6j=+d3DEtkxOty+PPB0V_g@mail.gmail.com>
Subject: Re: [PATCH v5 00/13] KVM: mm: fd-based approach for supporting KVM
 guest private memory
To:     Andy Lutomirski <luto@kernel.org>
Cc:     Chao Peng <chao.p.peng@linux.intel.com>, kvm@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org,
        qemu-devel@nongnu.org, Paolo Bonzini <pbonzini@redhat.com>,
        Jonathan Corbet <corbet@lwn.net>,
        Sean Christopherson <seanjc@google.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Wanpeng Li <wanpengli@tencent.com>,
        Jim Mattson <jmattson@google.com>,
        Joerg Roedel <joro@8bytes.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        x86@kernel.org, "H . Peter Anvin" <hpa@zytor.com>,
        Hugh Dickins <hughd@google.com>,
        Jeff Layton <jlayton@kernel.org>,
        "J . Bruce Fields" <bfields@fieldses.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Mike Rapoport <rppt@kernel.org>,
        Steven Price <steven.price@arm.com>,
        "Maciej S . Szmigiero" <mail@maciej.szmigiero.name>,
        Vlastimil Babka <vbabka@suse.cz>,
        Yu Zhang <yu.c.zhang@linux.intel.com>,
        "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
        Jun Nakajima <jun.nakajima@intel.com>, dave.hansen@intel.com,
        ak@linux.intel.com, david@redhat.com
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On Mon, Mar 28, 2022 at 10:17 AM Andy Lutomirski <luto@kernel.org> wrote:
>
> On Thu, Mar 10, 2022 at 6:09 AM Chao Peng <chao.p.peng@linux.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/

-- Vishal