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Subject: Re: [RFC PATCH v4 7/7] KVM: x86: Allow Qemu/KVM to use PVH entry
 point
To:     Maran Wilson <maran.wilson@oracle.com>, pbonzini@redhat.com,
        boris.ostrovsky@oracle.com, roger.pau@citrix.com,
        andrew.cooper3@citrix.com, hch@infradead.org, JBeulich@suse.com,
        x86@kernel.org, xen-devel@lists.xenproject.org,
        linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc:     tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com,
        rkrcmar@redhat.com, jpoimboe@redhat.com, bp@suse.de,
        kirill.shutemov@linux.intel.com, thomas.lendacky@amd.com,
        luto@kernel.org, dave.hansen@linux.intel.com, davem@davemloft.net,
        gregkh@linuxfoundation.org, mchehab@kernel.org,
        linus.walleij@linaro.org, rdunlap@infradead.org
References: <1519842483-8887-1-git-send-email-maran.wilson@oracle.com>
 <1519842483-8887-8-git-send-email-maran.wilson@oracle.com>
From:   Juergen Gross <jgross@suse.com>
Message-ID: <db421f9a-f0e5-ee15-3348-20f806f7a852@suse.com>
Date:   Thu, 1 Mar 2018 08:31:17 +0100
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On 28/02/18 19:28, 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>

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


Juergen