From mboxrd@z Thu Jan 1 00:00:00 1970 From: 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> References: <1302795447-12685-1-git-send-email-konrad.wilk@oracle.com> Return-path: In-Reply-To: <1302795447-12685-1-git-send-email-konrad.wilk@oracle.com> Sender: linux-kernel-owner@vger.kernel.org To: xen-devel@lists.xensource.com, linux-kernel@vger.kernel.org Cc: Konrad Rzeszutek Wilk List-Id: xen-devel@lists.xenproject.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