linux-kernel - Re: [PATCH v8 1/7] xen/pvh: Split CONFIG_XEN_PVH into CONFIG_PVH and CONFIG_XEN

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Date:   Thu, 6 Dec 2018 18:11:44 -0500
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Maran Wilson <maran.wilson@...cle.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org, xen-devel@...ts.xenproject.org,
        kvm@...r.kernel.org, jgross@...e.com
Cc:     tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
        jpoimboe@...hat.com, kirill.shutemov@...ux.intel.com, bp@...e.de,
        thomas.lendacky@....com, luto@...nel.org,
        dave.hansen@...ux.intel.com, roger.pau@...rix.com,
        rkrcmar@...hat.com, rdunlap@...radead.org
Subject: Re: [PATCH v8 1/7] xen/pvh: Split CONFIG_XEN_PVH into CONFIG_PVH and
 CONFIG_XEN_PVH

On 12/6/18 5:49 PM, Paolo Bonzini wrote:
> On 06/12/18 23:34, Boris Ostrovsky wrote:
>> On 12/6/18 5:11 PM, Paolo Bonzini wrote:
>>
>>> and also
>>>
>>> 	depends on !EFI
>>>
>>> because even though in principle it would be possible to write a PVH
>>> loader for UEFI, PVH's start info does not support the EFI handover
>>> protocol.
>> But we should be able to build the binary with both EFI and PVH?
> Can you?  It's a completely different binary format, the EFI handover
> protocol is invoked via a special entry point and needs the Linux header
> format, not ELF.

Right, but I think it is desirable to be able to build both from the
same config file.

-boris