[Xen-devel] [pvops-dom0]Let PV ops guest could handle Machine Check trap

["Ke, Liping" <liping.ke@xxxxxxxxx>]

Hi, Jeremy and all

This small patch lets pv ops guest handle machine check trap. When non
fatal mce error happens, xen will inject vMCE# to the impacted pv ops guest.
This patch allows pv ops guest could receive machine check trap and enter
its own machine check handler.

Thanks & Regards,
Criping


>From 5efc12fe8214d55e2becc2c4b6ec4a30531d7b60 Mon Sep 17 00:00:00 2001
From: Liping Ke <liping.ke@xxxxxxxxx>
Date: Tue, 22 Sep 2009 10:46:05 +0800
Subject: [PATCH] Let PV guest handle machine check trap.

This patch lets pv ops guest handle machine check trap. When non
fatal mce error happens, XEN will inject vMCE# to the pv ops guest
This patch allows pv ops guest could receive machine check trap 
and enter its own machine check handler.

Signed-off-by: Liping Ke <liping.ke@xxxxxxxxx>
---
 arch/x86/xen/enlighten.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 1edf6a8..3399a40 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -476,7 +476,7 @@ 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;
+               addr = (unsigned long)machine_check;
 #endif
        } else {
                /* Some other trap using IST? */
-- 
1.5.1

Attachment: 0001-Let-PV-guest-handle-machine-check-trap.patch
Description: 0001-Let-PV-guest-handle-machine-check-trap.patch

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