Messages in this thread | | | Date | Mon, 20 Feb 2012 16:34:52 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH][GIT PULL][v3.3] x86: Test saved %rip in NMI to determine nested NMI |
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* 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
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