Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030800AbcDMKFY (ORCPT ); Wed, 13 Apr 2016 06:05:24 -0400 Received: from smtp.ctxuk.citrix.com ([185.25.65.24]:63913 "EHLO SMTP.EU.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030369AbcDMKFV (ORCPT ); Wed, 13 Apr 2016 06:05:21 -0400 X-IronPort-AV: E=Sophos;i="5.24,479,1454976000"; d="scan'208";a="18959600" MIME-Version: 1.0 In-Reply-To: <20160412221225.GN1990@wotan.suse.de> References: <20160406024027.GX1990@wotan.suse.de> <20160407185148.GL1990@wotan.suse.de> <5707BD2E.20204@citrix.com> <20160408215854.GU1990@wotan.suse.de> <20160412221225.GN1990@wotan.suse.de> Date: Wed, 13 Apr 2016 11:05:00 +0100 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [Xen-devel] HVMLite / PVHv2 - using x86 EFI boot entry From: George Dunlap To: "Luis R. Rodriguez" CC: Matt Fleming , , Michael Chang , Linux Kernel Mailing List , Jim Fehlig , Jan Beulich , "H. Peter Anvin" , Daniel Kiper , "the arch/x86 maintainers" , Takashi Iwai , =?UTF-8?B?Vm9qdMSbY2ggUGF2bMOtaw==?= , Gary Lin , xen-devel , Jeffrey Cheung , Juergen Gross , Stefano Stabellini , Julien Grall , joeyli , Borislav Petkov , Boris Ostrovsky , Charles Arndol , "Andrew Cooper" , Julien Grall , Andy Lutomirski , David Vrabel , Linus Torvalds , =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= Content-Type: text/plain; charset="UTF-8" X-ClientProxiedBy: FTLPEX02CAS01.citrite.net (10.13.99.120) To AMSPEX02CL01.citrite.net (10.69.22.125) X-DLP: AMS1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 608 Lines: 14 On Tue, Apr 12, 2016 at 11:12 PM, Luis R. Rodriguez wrote: > Also, x86 does have a history of short DT use. Just pointing that its there as > an option as well. I'll Cc you on some thread about that. I'm not sure how this is relevant to anything. What we're talking about is how to get from Xen to a point in the Linux kernel where everything can Just Work. The proposed feature is a mini trampoline that (as I understand it): 1. Tells Xen where to jump to (via ELF note) 2. Sets up some basic modes and pagetables and then jumps to the zero page so Linux can just carry on. -George