On Sat, 27 Oct 2007 17:32:02 +1000 Benjamin Herrenschmidt <[EMAIL PROTECTED]> wrote:
> Allright, so Matt, let me know if that fixes your problem with gdb, and > I'll clean the patch up a bit and submit it. I want to double check if > something similar may be needed for freescale booke. > > Basically, the problem is that things like get_user_pages() can cause > COW operations which in turn call _tlbie() to be called for translations > that aren't in the current address space. > > The current 40x and 44x implementation of _tlbie doesn't handle that > properly as it only invalidates entries in the current PID. > > This is an attempt at fixing it. Untested, I just checked it builds for > arch/powerpc and arch/ppc. I also haven't looked whether the freescale > BookE _tlbie needs similar treatement (it will get passed the pid in r4 > with that patch, so if it needs to do something with it, it can). Kumar, > can you have a look ? This looks pretty good at first glance. I'll try to test it out today, but I'd still like to hear if it solves Matt's problem as I doubt I'll be able to duplicate it. josh _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
