From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758722Ab1DNPji (ORCPT ); Thu, 14 Apr 2011 11:39:38 -0400 Received: from rcsinet10.oracle.com ([148.87.113.121]:32639 "EHLO rcsinet10.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756374Ab1DNPjh (ORCPT >); Thu, 14 Apr 2011 11:39:37 -0400 From: Konrad Rzeszutek Wilk To: xen-devel@lists.xensource.com, linux-kernel@vger.kernel.org Cc: Konrad Rzeszutek Wilk Subject: [PATCH 1/2] xen/setup: Ignore E820_UNUSABLE when setting 1-1 mappings. Date: Thu, 14 Apr 2011 11:37:26 -0400 Message-Id: <1302795447-12685-2-git-send-email-konrad.wilk@oracle.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1302795447-12685-1-git-send-email-konrad.wilk@oracle.com> References: <1302795447-12685-1-git-send-email-konrad.wilk@oracle.com> X-Source-IP: acsmt356.oracle.com [141.146.40.156] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A090205.4DA71534.006F:SCFSTAT5015188,ss=1,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When we parse the raw E820, the Xen hypervisor can set "E820_RAM" to "E820_UNUSABLE" if the mem=X argument is used. As such we should _not_ consider the E820_UNUSABLE as an 1-1 identity mapping, but instead use the same case as for E820_RAM. Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/xen/setup.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index fa0269a..5840af1 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -166,7 +166,7 @@ static unsigned long __init xen_set_identity(const struct e820entry *list, if (last > end) continue; - if (entry->type == E820_RAM) { + if ((entry->type == E820_RAM) || (entry->type == E820_UNUSABLE)) { if (start > start_pci) identity += set_phys_range_identity( PFN_UP(start_pci), PFN_DOWN(start)); -- 1.7.1