Messages in this thread | | | From | Andy Lutomirski <> | Date | Thu, 23 Jul 2015 14:46:26 -0700 | Subject | Re: Dealing with the NMI mess |
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On Thu, Jul 23, 2015 at 2:20 PM, Steven Rostedt <rostedt@goodmis.org> wrote: > On Thu, 23 Jul 2015 13:21:16 -0700 > Andy Lutomirski <luto@amacapital.net> wrote: > >> 3. Forbid faults (other than MCE) inside NMI. >> >> Option 3 is almost easy. There are really only two kinds of faults >> that can legitimately nest inside NMI: #PF and #DB. #DB is easy to >> fix (e.g. with my patches or Peter's patches). > > What about int3? Which is needed to make ftrace work. This was a > requirement to get rid of stomp-machine when updating ftrace functions, > as well as the rational for doing the whole NMI nesting work in the > first place.
OK, I'm convinced.
So I'll keep working on fixing up int3 to be less magical. Patches coming eventually.
--Andy
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