On Tue, 2018-01-23 at 14:49 -0800, Andi Kleen wrote: > > Not sure. Maybe to start, the answer might be to allow it to be set for > > the ultra-paranoid, but in general don't enable it by default. Having it > > enabled would be an alternative to someone deciding to disable SMT, since > > that would have even more of a performance impact. > > I agree. A reasonable strategy would be to only enable it for > processes that have dumpable disabled. This should be already set for > high value processes like GPG, and allows others to opt-in if > they need to. That seems to make sense, and I think was the solution we were approaching for IBPB on context switch too, right? Are we generally agreed on dumpable as the criterion for both of those?
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