From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751668AbdK1KQu (ORCPT ); Tue, 28 Nov 2017 05:16:50 -0500 Received: from smtp.ctxuk.citrix.com ([185.25.65.24]:34232 "EHLO SMTP.EU.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750907AbdK1KQs (ORCPT ); Tue, 28 Nov 2017 05:16:48 -0500 X-Greylist: delayed 582 seconds by postgrey-1.27 at vger.kernel.org; Tue, 28 Nov 2017 05:16:48 EST X-IronPort-AV: E=Sophos;i="5.44,467,1505779200"; d="scan'208";a="63829295" Date: Tue, 28 Nov 2017 10:07:02 +0000 From: Roger Pau =?iso-8859-1?Q?Monn=E9?= To: Juergen Gross CC: , , , , , , , , , , Subject: Re: [Xen-devel] [PATCH 1/3] x86/boot: add acpi rsdp address to setup_header Message-ID: <20171128100702.ruegydc6grrbxuvc@MacBook-Pro-de-Roger.local> References: <20171128094400.25955-1-jgross@suse.com> <20171128094400.25955-2-jgross@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20171128094400.25955-2-jgross@suse.com> User-Agent: NeoMutt/20171027 X-ClientProxiedBy: AMSPEX02CAS01.citrite.net (10.69.22.112) To AMSPEX02CL03.citrite.net (10.69.22.127) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Nov 28, 2017 at 10:43:58AM +0100, Juergen Gross wrote: > Xen PVH guests receive the address of the RSDP table from Xen. In order > to support booting a Xen PVH guest via grub2 using the standard x86 > boot entry we need a way fro grub2 to pass the RSDP address to the > kernel. > > For this purpose expand the struct setup_header to hold the physical > address of the RSDP address. Being zero means it isn't specified and > has to be located the legacy way (searching through low memory or > EBDA). > > Signed-off-by: Juergen Gross Reviewed-by: Roger Pau Monné Thanks, Roger.