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SubjectRe: [PATCH][GIT PULL][v3.3] x86: Test saved %rip in NMI to determine nested NMI
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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.


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