[Xen-devel] [PATCH 2/2] Register native mce handler as vMCE bounce back point

["Liu, Jinsong" <jinsong.liu@xxxxxxxxx>]

>From 76e40a60878ff72986fd8d92611400195ae0f997 Mon Sep 17 00:00:00 2001
From: Liu, Jinsong <jinsong.liu@xxxxxxxxx>
Date: Mon, 16 Apr 2012 00:16:58 +0800
Subject: [PATCH 2/2] Register native mce handler as vMCE bounce back point

When xen hyeprvisor inject vMCE to guest, use native mce handler to handle it

Signed-off-by: Liu, Jinsong <jinsong.liu@xxxxxxxxx>
Signed-off-by: Ke, Liping <liping.ke@xxxxxxxxx>
Signed-off-by: Jiang, Yunhong <yunhong.jiang@xxxxxxxxx>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
---
 arch/x86/xen/enlighten.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 15628d4..346ba64 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -614,8 +614,8 @@ 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
+        * about.  Xen will handle faults like double_fault,
+        * so we should never see them.  Warn if
         * there's an unexpected IST-using fault handler.
         */
        if (addr == (unsigned long)debug)
@@ -630,7 +630,11 @@ 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;
+               /*
+                * when xen hyeprvisor inject vMCE to guest,
+                * use native mce handler to handle it
+                */
+               ;
 #endif
        } else {
                /* Some other trap using IST? */
-- 
1.7.1

Attachment: 0002-Register-native-mce-handler-as-vMCE-bounce-back-poin.patch
Description: 0002-Register-native-mce-handler-as-vMCE-bounce-back-poin.patch

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