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    SubjectRe: [PATCH 2/2] Register native mce handler as vMCE bounce back point
    On Mon, Apr 16, 2012 at 01:07:35AM +0000, Liu, Jinsong wrote:
    > >From 76e40a60878ff72986fd8d92611400195ae0f997 Mon Sep 17 00:00:00 2001
    > From: Liu, Jinsong <jinsong.liu@intel.com>
    > 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

    hypervisor

    >
    > 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 | 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
    > + */
    > + ;


    Can you just take the check out?


    > #endif
    > } else {
    > /* Some other trap using IST? */
    > --
    > 1.7.1



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