linux-kernel - Re: [PATCH v8 0/7] KVM: x86: Allow Qemu/KVM to use PVH entry point

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Message-ID: <e8ed34e7-f82a-2314-9919-185d48510715@redhat.com>
Date:   Thu, 6 Dec 2018 22:21:12 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Maran Wilson <maran.wilson@...cle.com>, x86@...nel.org,
        xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, jgross@...e.com
Cc:     boris.ostrovsky@...cle.com, bp@...e.de,
        dave.hansen@...ux.intel.com, davem@...emloft.net,
        gregkh@...uxfoundation.org, hpa@...or.com, jpoimboe@...hat.com,
        kirill.shutemov@...ux.intel.com, luto@...nel.org,
        mchehab@...nel.org, mingo@...hat.com, rdunlap@...radead.org,
        tglx@...utronix.de, thomas.lendacky@....com, hch@...radead.org,
        roger.pau@...rix.com, rkrcmar@...hat.com
Subject: Re: [PATCH v8 0/7] KVM: x86: Allow Qemu/KVM to use PVH entry point

On 06/12/18 07:02, Maran Wilson wrote:
> For certain applications it is desirable to rapidly boot a KVM virtual
> machine. In cases where legacy hardware and software support within the
> guest is not needed, Qemu should be able to boot directly into the
> uncompressed Linux kernel binary without the need to run firmware.
> 
> There already exists an ABI to allow this for Xen PVH guests and the ABI
> is supported by Linux and FreeBSD:
> 
>    https://xenbits.xen.org/docs/unstable/misc/pvh.html
> 
> This patch series would enable Qemu to use that same entry point for
> booting KVM guests.

Thanks!  I should be able to post a Tested-by next Monday.  Boris, are
you going to pick it up for 4.21?

Paolo