On Fri, Mar 08, 2019 at 10:34:18PM +0100, Peter Zijlstra wrote: > On Fri, Mar 08, 2019 at 02:15:56PM -0600, Josh Poimboeuf wrote: > > On Thu, Mar 07, 2019 at 12:45:27PM +0100, Peter Zijlstra wrote: > > > Really skip the original instruction flow, instead of letting it > > > continue with NOPs. > > > > > > Since the alternative code flow already continues after the original > > > instructions, only the alt-original is skipped. > > > > I like this approach. I wonder if we can do something similar to get > > rid of the nasty fake jumps. > > This actually hard relies on those fake jumps. Or am I missing the > point?
I was just wondering out loud if we could somehow keep the same "fake jump" functionality, but do it in a cleaner way that doesn't require creating fake instructions. I'll might give it a try. -- Josh
