From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0FD9DC04EB8 for ; Thu, 6 Dec 2018 23:30:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CCE8320878 for ; Thu, 6 Dec 2018 23:30:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CCE8320878 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726275AbeLFXav (ORCPT ); Thu, 6 Dec 2018 18:30:51 -0500 Received: from mx1.redhat.com ([209.132.183.28]:56294 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726069AbeLFXav (ORCPT ); Thu, 6 Dec 2018 18:30:51 -0500 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id AFC3D3002DAD; Thu, 6 Dec 2018 23:30:50 +0000 (UTC) Received: from [10.36.112.16] (ovpn-112-16.ams2.redhat.com [10.36.112.16]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 05B7A1001F5B; Thu, 6 Dec 2018 23:30:45 +0000 (UTC) Subject: Re: [PATCH v8 1/7] xen/pvh: Split CONFIG_XEN_PVH into CONFIG_PVH and CONFIG_XEN_PVH To: Boris Ostrovsky , Maran Wilson , x86@kernel.org, linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org, kvm@vger.kernel.org, jgross@suse.com Cc: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, jpoimboe@redhat.com, kirill.shutemov@linux.intel.com, bp@suse.de, thomas.lendacky@amd.com, luto@kernel.org, dave.hansen@linux.intel.com, roger.pau@citrix.com, rkrcmar@redhat.com, rdunlap@infradead.org References: <1544076152-21637-1-git-send-email-maran.wilson@oracle.com> <1544076257-21792-1-git-send-email-maran.wilson@oracle.com> <3b4fdddd-67d8-30d3-2a5d-c4d07b6f31c9@oracle.com> From: Paolo Bonzini Openpgp: preference=signencrypt Autocrypt: addr=pbonzini@redhat.com; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.42]); Thu, 06 Dec 2018 23:30:51 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/12/18 00:11, Boris Ostrovsky wrote: > 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. Ah, "make bzImage" and use the vmlinux for PVH, because PVH fetches the entry point from the special note. That's clever. :) I don't see why it should not work, and if so the "depends on !EFI" is indeed unnecessary. Paolo