lkml.org 
[lkml]   [2011]   [Dec]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 02/10] xen/mce: Change the machine check point
Date
From 80221e743d1a693670d701f383da26c8e5d5bf98 Mon Sep 17 00:00:00 2001
From: Liu Jinsong <jinsong.liu@intel.com>
Date: Wed, 7 Dec 2011 05:26:16 +0800
Subject: [PATCH 02/10] xen/mce: Change the machine check point

This patch backport from Jeremy's pvops commit
073349667402682c997394b3fcdbbeb6707f368f

Enable MCE support in dom0, so that if a MCE happen and that MCE impact
dom0, dom0 can receive a vMCE.

Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Signed-off-by: Ke, Liping <liping.ke@intel.com>
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
arch/x86/xen/enlighten.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index b073e4c..13e7a16 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -526,7 +526,7 @@ static int cvt_gate_to_trap(int vector, const gate_desc *val,
* Look for known traps using IST, and substitute them
* appropriately. The debugger ones are the only ones we care
* about. Xen will handle faults like double_fault and
- * machine_check, so we should never see them. Warn if
+ * nmi, so we should never see them. Warn if
* there's an unexpected IST-using fault handler.
*/
if (addr == (unsigned long)debug)
@@ -541,7 +541,10 @@ static int cvt_gate_to_trap(int vector, const gate_desc *val,
return 0;
#ifdef CONFIG_X86_MCE
} else if (addr == (unsigned long)machine_check) {
- return 0;
+ if (xen_initial_domain())
+ addr = (unsigned long)machine_check;
+ else
+ return 0;
#endif
} else {
/* Some other trap using IST? */
--
1.6.5.6[unhandled content-type:application/octet-stream]
\
 
 \ /
  Last update: 2011-12-23 11:27    [W:0.027 / U:0.440 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site