On Thu, 19 May 2011 07:54:48 +1000 Benjamin Herrenschmidt <b...@kernel.crashing.org> wrote:
> On Wed, 2011-05-18 at 16:51 -0500, Scott Wood wrote: > > On Thu, 19 May 2011 07:37:47 +1000 > > Benjamin Herrenschmidt <b...@kernel.crashing.org> wrote: > > > > > On Wed, 2011-05-18 at 16:05 -0500, Scott Wood wrote: > > > > A little more speed up measured on e5500. > > > > > > > > Setting of U0-3 is dropped as it is not used by Linux as far as I can > > > > see. > > > > > > Please keep them for now. If your core doesn't have them, make them an > > > MMU feature. > > > > We have them, it was just an attempt to clean out unused things to speed up > > the miss handler. I'll drop that part if you think we'll use it in the > > future. > > I never know for sure ... damn research people ... :-) > > I'd rather keep them for now, does it make a significant difference ? It was minor but measurable (wouldn't have been worthwhile except as part of a series of small things that add up), but upon trying again I was able to reorder slightly and fit it in without seeing an impact. -Scott _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
