Thus spake Benjamin Herrenschmidt (b...@kernel.crashing.org): > On Mon, 2009-09-28 at 18:21 -0700, Rex Feany wrote: > > > It's going to be hard for me to get that "right" since I don't really > > > know what's going on with the core here, but I suppose if we get it > > > moving along with extra tlb invalidations, that should be "good enough" > > > until somebody who really knows what's going on comes up with possibly > > > a better fix. > > > > I've tried sticking tlbil_va() in those places, nothing seems to help. > > In some cases userspace is slow, in other cases userspace is faster and > > unstable: sometimes commands hang, sometimes I am able to ctrl-c and > > and kill it, sometimes I get other strange crashes or falures (so far no > > kernel oopses though). > > And you are positive that with 2.6.31 and your other patch, it works > both fast and stable ? This is strange... the code should be mostly > identical. I'll have a second look and see if I can get you a patch that > reproduce -exactly- the behaviour of 2.6.31 plus your patch.
The difference is night and day - with 2.6.31 I can boot into single user mode, I can run our custom software (I left it running over night with very simple test script - no crashes). With the top of the tree I can sometimes boot into a shell, and if it isn't crashing or hanging on boot it runs very slow (10+ seconds to do anything, if I am lucky). thanks! /rex _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
