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

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Date:   Wed, 29 Nov 2017 18:16:14 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Maran Wilson <maran.wilson@...cle.com>, boris.ostrovsky@...cle.com,
        jgross@...e.com, tglx@...utronix.de, mingo@...hat.com,
        hpa@...or.com, x86@...nel.org, xen-devel@...ts.xenproject.org,
        linux-kernel@...r.kernel.org, roger.pau@...rix.com,
        rkrcmar@...hat.com, JBeulich@...e.com, andrew.cooper3@...rix.com,
        kvm@...r.kernel.org
Subject: Re: [RFC PATCH] KVM: x86: Allow Qemu/KVM to use PVH entry point

On 29/11/2017 18:14, Maran Wilson wrote:
> That is one option. I guess this gets into a discussion about the QEMU
> side of the upcoming patches that would follow ...
> 
> I'm currently just initializing the CPU state in QEMU for testing since
> there is such minimal (non Linux specific) setup that is required by the
> ABI.  And (borrowing from the Intel clear container patches) that VM
> setup is only performed when user selects the "nofw" option with the q35
> model. But yeah, if folks think it important to move all such machine
> state initialization out of QEMU and into an option ROM, I can look into
> coding it up that way for the QEMU patches.

Yes, please do an option ROM.  I'll take care of porting it to qboot.

Thanks,

Paolo