Excerpts from Christophe Leroy's message of March 16, 2021 5:21 pm: > > > Le 15/03/2021 à 23:04, Nicholas Piggin a écrit : >> This extends the MSR[RI]=0 window a little further into the system >> call in order to pair RI and EE enabling with a single mtmsrd. > > Time ago, I proposed to delay that on PPC32 and Michael objected, see > https://patchwork.ozlabs.org/project/linuxppc-dev/patch/9f9dd859d571e324c7412ed9db9da8cfba678257.1548956511.git.christophe.le...@c-s.fr/
Yeah, it is a concern. The speedup should be at least 5% I think on 64s (have not measured in isolation yet), so might be worth it. We'll see. Thanks, Nick
