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

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Message-ID: <64b4fc44-d3f5-ed4e-ee4c-38e78313d979@redhat.com>
Date:   Thu, 13 Dec 2018 14:13:21 +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 12/12/18 19:09, Maran Wilson wrote:
> On 12/6/2018 1:21 PM, Paolo Bonzini wrote:
>> 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?
> 
> Hi Paolo,
> 
> Are you still planning on running some testing of your own for these
> patches? Should Boris wait to hear from you before moving forward?

He can go ahead with v9, I was just curious about it.

Paolo