From: Don Zickus <dzickus@redhat.com>
To: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: huang ying <huang.ying.caritas@gmail.com>,
"Maciej W. Rozycki" <macro@linux-mips.org>,
x86@kernel.org, Peter Zijlstra <peterz@infradead.org>,
Robert Richter <robert.richter@amd.com>,
ying.huang@intel.com, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 5/6] x86, NMI: Allow NMI reason io port (0x61) to be processed on any CPU
Date: Mon, 28 Feb 2011 13:37:59 -0500 [thread overview]
Message-ID: <20110228183759.GD11359@redhat.com> (raw)
In-Reply-To: <4D6A332F.3080603@gmail.com>
On Sun, Feb 27, 2011 at 02:19:11PM +0300, Cyrill Gorcunov wrote:
> On 02/27/2011 04:01 AM, huang ying wrote:
> ...
> >>
> >> Probably we should put question in another fashion, ie in the fasion of
> >>overall design -- who should be
> >>responsible for handling external nmis, 1) the cpu which apic is configured
> >>to observe such nmis or 2) any cpu?
> >>If we take 1) then no lock is needed and underlied code will report real cpu
> >>number who observed nmi. If
> >>we take 2) then lock is needed but we need a big comment in default_do_nmi
> >>together with probably cpu number
> >>fixed in serr\iochk printk's.
> >
> >I am OK with both solutions.
> >
> >Best Regards,
> >Huang Ying
>
> ok, lets see what others think on this thread
I'm trying to figure out how this affects SGI's systems which currently
enable external NMIs to all cpu's in order to support their nmi button to
dump cpu stacks on a system hang
(arch/x86/kernel/apic/x2apic_uv_x.c::uv_nmi_init)
But feel free to post patches addressing your concerns as I am getting a
little lost in the all the concerns being thrown back and forth.
Cheers,
Don
next prev parent reply other threads:[~2011-02-28 18:38 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-06 21:18 [PATCH 0/6] x86, NMI: die_notifier and default_do_nmi cleanups Don Zickus
2011-01-06 21:18 ` [PATCH 1/6] x86, NMI: Add NMI symbol constants and rename memory parity to PCI SERR Don Zickus
2011-01-07 15:33 ` [tip:perf/core] " tip-bot for Huang Ying
2011-01-06 21:18 ` [PATCH 2/6] x86: Convert some devices to use DIE_NMIUNKNOWN Don Zickus
2011-01-07 15:34 ` [tip:perf/core] " tip-bot for Don Zickus
2011-01-06 21:18 ` [PATCH 3/6] x86, NMI: Add priorities to handlers Don Zickus
2011-01-07 13:09 ` Peter Zijlstra
2011-01-07 14:43 ` Don Zickus
2011-01-07 14:50 ` Peter Zijlstra
2011-01-07 17:48 ` Don Zickus
2011-01-07 15:34 ` [tip:perf/core] " tip-bot for Don Zickus
2011-01-06 21:18 ` [PATCH 4/6] x86, NMI: Remove DIE_NMI_IPI Don Zickus
2011-01-07 15:34 ` [tip:perf/core] " tip-bot for Don Zickus
2011-01-06 21:18 ` [PATCH 5/6] x86, NMI: Allow NMI reason io port (0x61) to be processed on any CPU Don Zickus
2011-01-07 15:34 ` [tip:perf/core] " tip-bot for Don Zickus
2011-02-23 2:39 ` [PATCH 5/6] " Maciej W. Rozycki
2011-02-25 21:45 ` Don Zickus
2011-02-26 8:02 ` Cyrill Gorcunov
2011-02-26 11:19 ` huang ying
2011-02-26 12:34 ` Cyrill Gorcunov
2011-02-26 14:07 ` huang ying
2011-02-26 15:09 ` Cyrill Gorcunov
2011-02-27 1:01 ` huang ying
2011-02-27 11:19 ` Cyrill Gorcunov
2011-02-28 18:37 ` Don Zickus [this message]
2011-02-28 18:48 ` Cyrill Gorcunov
2011-01-06 21:18 ` [PATCH 6/6] x86, NMI: Clean-up default_do_nmi() Don Zickus
2011-01-07 15:35 ` [tip:perf/core] " tip-bot for Don Zickus
2011-01-07 9:53 ` [PATCH 0/6] x86, NMI: die_notifier and default_do_nmi cleanups Cyrill Gorcunov
2011-01-07 9:55 ` Peter Zijlstra
-- strict thread matches above, loose matches on Subject: below --
2010-11-12 14:43 [V2 PATCH 0/6] x86, NMI: give NMI handler a face-lift Don Zickus
2010-11-12 14:43 ` [PATCH 5/6] x86, NMI: Allow NMI reason io port (0x61) to be processed on any CPU Don Zickus
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