On Sun, 2019-02-03 at 13:37 -0800, Andi Kleen wrote: > On Sun, Feb 03, 2019 at 08:05:53PM +0100, Jiri Kosina wrote: > > On Sun, 3 Feb 2019, Ben Hutchings wrote: > > > > > 3.16.63-rc1 review patch. If anyone has any objections, please let me know. > > > > > > ------------------ > > > > > > From: Jiri Kosina <jkosina@xxxxxxx> > > > > > > commit dbfe2953f63c640463c630746cd5d9de8b2f63ae upstream. > > > > You really want the whole IBPB+STIBP revamp from upstream, otherwise > > you're going to get noticeable performance penalties on some workloads > > with some microcodes. > > Yes, we would need the opt-in/opt-out support too. > > Please don't merge it just as is. Thanks, I've now dropped this. Ben. -- Ben Hutchings It is impossible to make anything foolproof because fools are so ingenious.
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