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Subject: Re: [PATCH v7 7/7] KVM: x86: Allow Qemu/KVM to use PVH entry point
To:     Maran Wilson <maran.wilson@oracle.com>, x86@kernel.org,
        linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org,
        kvm@vger.kernel.org, pbonzini@redhat.com
Cc:     tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com,
        roger.pau@citrix.com, boris.ostrovsky@oracle.com,
        rkrcmar@redhat.com
References: <1523920175-27287-1-git-send-email-maran.wilson@oracle.com>
 <1523920430-27952-1-git-send-email-maran.wilson@oracle.com>
From:   Juergen Gross <jgross@suse.com>
Message-ID: <12a7d9fc-2cff-821c-68c3-05d61c2640e2@suse.com>
Date:   Tue, 17 Apr 2018 08:41:39 +0200
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On 17/04/18 01:13, 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 enables Qemu to use that same entry point for booting KVM
> guests.
> 
> Signed-off-by: Maran Wilson <maran.wilson@oracle.com>
> Suggested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> Suggested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
> Tested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

Reviewed-by: Juergen Gross <jgross@suse.com>

You might want to send a follow-up patch to rename the functions in
arch/x86/platform/pvh/* from xen_* to pvh_*.


Juergen