From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Jack Steiner <steiner@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>, Don Zickus <dzickus@redhat.com>,
tglx@linutronix.de, hpa@zytor.com, x86@kernel.org,
linux-kernel@vger.kernel.org,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Jason Wessel <jason.wessel@windriver.com>
Subject: Re: [PATCH] x86, UV: Fix NMI handler for UV platforms
Date: Mon, 21 Mar 2011 20:55:21 +0300 [thread overview]
Message-ID: <4D879109.2040000@gmail.com> (raw)
In-Reply-To: <4D878F7A.7070506@gmail.com>
On 03/21/2011 08:48 PM, Cyrill Gorcunov wrote:
...
>>> Another option might be to add pre-nmi notifier chain, which of course
>>> not much differ from platform ops but I guess platform ops stands mostly
>>> for one-shot events while chain might be more flexible. Ie I mean something
>>> like
>>>
>>> if (notify_pre_die(DIE_NMI, "nmi", regs, 0, 2, SIGINT) == NOTIFY_STOP)
>>> return;
>>
>> You still need to process both chains in order to handle the case where both
>> hw_perf & the SGI BMC raise NMIs at about the same time.
>>
>> --- jack
>
> yes, but I meant to simply call this chain before the regular notify_die. Anyway
> it would look ugly as hell too.
>
And if I'm not missing something kgdb still might call IPI inside NMI handler
which is look somehow strange to me...
--
Cyrill
next prev parent reply other threads:[~2011-03-21 17:56 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-21 16:01 [PATCH] x86, UV: Fix NMI handler for UV platforms Jack Steiner
2011-03-21 16:14 ` Ingo Molnar
2011-03-21 16:26 ` Cyrill Gorcunov
2011-03-21 16:43 ` Cyrill Gorcunov
2011-03-21 17:00 ` Cyrill Gorcunov
2011-03-21 17:08 ` Jack Steiner
2011-03-21 17:19 ` Cyrill Gorcunov
2011-03-21 17:34 ` Jack Steiner
2011-03-21 17:48 ` Cyrill Gorcunov
2011-03-21 17:55 ` Cyrill Gorcunov [this message]
2011-03-21 18:15 ` Cyrill Gorcunov
2011-03-21 18:24 ` Jack Steiner
2011-03-21 17:53 ` Don Zickus
2011-03-21 17:51 ` Don Zickus
2011-03-21 18:00 ` Cyrill Gorcunov
2011-03-21 18:22 ` Jack Steiner
2011-03-21 19:37 ` Don Zickus
2011-03-21 20:37 ` Jack Steiner
2011-03-22 17:11 ` Jack Steiner
2011-03-22 18:44 ` Don Zickus
2011-03-22 20:02 ` Jack Steiner
2011-03-22 21:25 ` Jack Steiner
2011-03-22 22:02 ` Cyrill Gorcunov
2011-03-23 13:36 ` Jack Steiner
2011-03-22 22:05 ` Don Zickus
2011-03-23 16:32 ` Jack Steiner
2011-03-23 17:53 ` Don Zickus
2011-03-23 20:00 ` Don Zickus
2011-03-23 20:41 ` Cyrill Gorcunov
2011-03-23 20:45 ` Cyrill Gorcunov
2011-03-23 21:22 ` Don Zickus
2011-03-23 20:46 ` Jack Steiner
2011-03-23 21:23 ` Don Zickus
2011-03-24 17:09 ` Jack Steiner
2011-03-24 18:43 ` Don Zickus
2011-03-21 16:56 ` Jack Steiner
2011-03-21 18:05 ` Ingo Molnar
2011-03-21 19:23 ` [PATCH V2] " Jack Steiner
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