Messages in this thread | | | Date | Thu, 15 Jul 2010 13:44:41 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [patch 1/2] x86_64 page fault NMI-safe |
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On 07/15/2010 10:38 AM, Mathieu Desnoyers wrote: >> >> Of course, if there is some trap that re-enables interrupts even if >> the trap happened in an interrupt-disabled region, then that would >> change things, but that would be a bad bug regardless (and totally >> independently of any NMI issues). So in that sense it's a "could >> happen", but it's something that would be a totally separate bug. > > Yep, this kind of scenario would therefore be a bug that does not belong to the > specific realm of nmis. >
Yes, the only specific issue here is NMI -> trap -> IRET -> [nested NMI], which is what this whole thing is about.
-hpa
-- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.
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