[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: [pvops-dom0]Let PV ops guest could handle Machine Check trap
On 09/21/09 23:32, Ke, Liping wrote: > 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. > Have you tested this? This code is specifically to deal with traps installed using an IST stack. If the machine_check handler just works as-is then there's no need for that whole ifdef block. If it doesn't work, then we need a variant which has the right exception frame format. Thanks, J > 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? */ > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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