From: "H. Peter Anvin" <hpa@zytor.com>
To: Ingo Molnar <mingo@elte.hu>, Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH][GIT PULL][v3.3] x86: Test saved %rip in NMI to determine nested NMI
Date: Mon, 20 Feb 2012 09:07:47 -0800 [thread overview]
Message-ID: <035b3b78-4af7-42e8-9694-d7f6c9f2e59e@email.android.com> (raw)
In-Reply-To: <20120220153452.GA4962@elte.hu>
Not even all that legacy.
Ingo Molnar <mingo@elte.hu> wrote:
>
>* Steven Rostedt <rostedt@goodmis.org> wrote:
>
>> On Mon, 2012-02-20 at 09:10 +0100, Ingo Molnar wrote:
>> > >
>> > > Note, it does not seem to cause any destruction, but screw up
>> > > profiling.
>> >
>> > Except if the source of the NMI was not profiling, right?
>>
>> Well, what else are NMIs used for? [...]
>
>There's various (legacy) diagnostics NMIs on various x86
>platforms, mostly signalling some sort of deep trouble
>with the hw.
>
>Thanks,
>
> Ingo
--
Sent from my mobile phone. Please excuse my brevity and lack of formatting.
next prev parent reply other threads:[~2012-02-20 17:08 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-19 2:06 [PATCH][GIT PULL][v3.3] x86: Test saved %rip in NMI to determine nested NMI Steven Rostedt
2012-02-19 12:56 ` Ingo Molnar
2012-02-19 13:46 ` hpanvin@gmail.com
2012-02-19 13:48 ` Ingo Molnar
2012-02-19 20:34 ` Steven Rostedt
2012-02-19 20:45 ` H. Peter Anvin
2012-02-19 21:00 ` Steven Rostedt
2012-02-19 14:57 ` Steven Rostedt
2012-02-20 8:10 ` Ingo Molnar
2012-02-20 14:41 ` Steven Rostedt
2012-02-20 15:34 ` Ingo Molnar
2012-02-20 17:07 ` H. Peter Anvin [this message]
2012-02-19 21:43 ` [PATCH v2][GIT PULL][v3.3] x86: Test saved %cs " Steven Rostedt
2012-02-20 11:47 ` [tip:x86/urgent] x86/nmi: Test saved %cs in NMI to determine nested NMI case tip-bot for Steven Rostedt
2012-02-20 16:51 ` Steven Rostedt
2012-02-27 21:29 ` Greg KH
2012-02-20 18:03 ` Linus Torvalds
2012-02-20 18:26 ` Steven Rostedt
2012-02-21 22:08 ` [tip:x86/urgent] x86: Specify a size for the cmp in the NMI handler tip-bot for Steven Rostedt
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