linux-kernel - Re: [PATCH] x86, UV: Fix NMI handler for UV platforms

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Message-ID: <20110321182421.GB14562@sgi.com>
Date:	Mon, 21 Mar 2011 13:24:21 -0500
From:	Jack Steiner <steiner@....com>
To:	Cyrill Gorcunov <gorcunov@...il.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Don Zickus <dzickus@...hat.com>,
	tglx@...utronix.de, hpa@...or.com, x86@...nel.org,
	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH] x86, UV: Fix NMI handler for UV platforms

On Mon, Mar 21, 2011 at 09:15:04PM +0300, Cyrill Gorcunov wrote:
> On 03/21/2011 08:08 PM, Jack Steiner wrote:
> ...
> > 
> > We use KDB internally, and yes, it has the same issue. The version of the
> > patch that uses KDB OR's the "handled" status for both KDB & the UV NMI handler.
> > If either KDB or the UV NMI handler returns "handled", the code in traps.c exits
> > after the call to the first die notifier.
> > 
> > Not particularily pretty but I could not find a better way to do it.
> > 
> > --- jack
> 
>   Btw Jack, I somehow missed (sorry) this patch only handles UV NMI handler so
> for KGDB case you need some other patch on top?

Yes. Internally we usually apply the older KDB patches to our tree.


--- jack
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