On Tue, Sep 13, 2011 at 09:03:20PM +0200, Andi Kleen wrote: > > So I got around to implementing this and it seems to work great. The back > > to back NMIs are detected properly using the %rip and that info is passed to > > the NMI notifier. That info is used to determine if only the first > > handler to report 'handled' is executed or _all_ the handlers are > > executed. > > > > I think all the 'unknown' NMIs I generated with various perf runs have > > disappeared. I'll post a new version of my nmi notifier rewrite soon. > > This will fail when the system is idle. Oh one other thing I forgot to mention is that an NMI handler has to return a value greater than 1, meaning that it handle multiple NMI events during this NMI to even enable the 'NMI swallowing' algorithm. Cheers, Don -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
