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Message-Id: <1306359456-3627-4-git-send-email-konrad.wilk@oracle.com>
Date: Wed, 25 May 2011 17:37:35 -0400
From: Konrad@...pdata.com, Rzeszutek@...pdata.com, Wilk@...pdata.com
To: stable@...nel.org, linux-kernel@...r.kernel.org
Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Subject: [PATCH 1/2] xen/setup: Ignore E820_UNUSABLE when setting 1-1 mappings.
From: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
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 <konrad.wilk@...cle.com>
---
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 90bac0a..fba4a6c 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));
--
1.7.4.1
--
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