From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752453AbdLLK6j (ORCPT ); Tue, 12 Dec 2017 05:58:39 -0500 Received: from terminus.zytor.com ([65.50.211.136]:45299 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750749AbdLLK6f (ORCPT ); Tue, 12 Dec 2017 05:58:35 -0500 Date: Tue, 12 Dec 2017 02:55:04 -0800 From: tip-bot for Juergen Gross Message-ID: Cc: mingo@kernel.org, linux-kernel@vger.kernel.org, jgross@suse.com, tglx@linutronix.de, torvalds@linux-foundation.org, peterz@infradead.org, hpa@zytor.com Reply-To: hpa@zytor.com, peterz@infradead.org, torvalds@linux-foundation.org, tglx@linutronix.de, jgross@suse.com, linux-kernel@vger.kernel.org, mingo@kernel.org In-Reply-To: <20171208151139.30213-5-jgross@suse.com> References: <20171208151139.30213-5-jgross@suse.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/boot] x86/xen: Supply RSDP address in boot params for PVH guests Git-Commit-ID: 930ba49b2ce7b09a5eddc21385fd944ba6b4e829 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 930ba49b2ce7b09a5eddc21385fd944ba6b4e829 Gitweb: https://git.kernel.org/tip/930ba49b2ce7b09a5eddc21385fd944ba6b4e829 Author: Juergen Gross AuthorDate: Fri, 8 Dec 2017 16:11:39 +0100 Committer: Ingo Molnar CommitDate: Mon, 11 Dec 2017 15:14:21 +0100 x86/xen: Supply RSDP address in boot params for PVH guests When booted via the special PVH entry save the RSDP address set in the boot information block in struct boot_params. This will enable Xen to locate the RSDP at an arbitrary address. Signed-off-by: Juergen Gross Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: boris.ostrovsky@oracle.com Cc: corbet@lwn.net Cc: lenb@kernel.org Cc: linux-acpi@vger.kernel.org Cc: rjw@rjwysocki.net Cc: xen-devel@lists.xenproject.org Link: http://lkml.kernel.org/r/20171208151139.30213-5-jgross@suse.com Signed-off-by: Ingo Molnar --- arch/x86/xen/enlighten_pvh.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/x86/xen/enlighten_pvh.c b/arch/x86/xen/enlighten_pvh.c index 6e6430c..e85e6da 100644 --- a/arch/x86/xen/enlighten_pvh.c +++ b/arch/x86/xen/enlighten_pvh.c @@ -68,9 +68,12 @@ static void __init init_pvh_bootparams(void) * * Version 2.12 supports Xen entry point but we will use default x86/PC * environment (i.e. hardware_subarch 0). + * The RSDP address is available from version 2.14 on. */ - pvh_bootparams.hdr.version = (2 << 8) | 12; + pvh_bootparams.hdr.version = (2 << 8) | 14; pvh_bootparams.hdr.type_of_loader = (9 << 4) | 0; /* Xen loader */ + + pvh_bootparams.hdr.acpi_rsdp_addr = pvh_start_info.rsdp_paddr; } /*