On Tue, Jan 07, 2014 at 04:42:55PM +0100, Andi Kleen wrote: > > Yes; go read this: > > > > lkml.kernel.org/r/20131219125205.gt3...@twins.programming.kicks-ass.net > > Hmm, but AFAIK we're not using freeze counters on PMI today. > We just rely on the explicit disabling in the counters through the global > ctrl. > > So it should be the same as with any other PMI which also does not > automatically freeze. Not true?
Regardless whether its used or not; I'd very much like that answered. > Or do you mean interaction with the LBRs here? > (currently LBRs and PT are mutually exclusive) Yes we very much rely on the FREEZE bits for LBR. PT and LBR being mutually exclusive wasn't documented (or I missed it) and completely blows. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
