[dropping linux-kernel of the cc:] On Fri, May 13, 2011 at 11:02:27PM -0700, Kevin Cernekee wrote: > On Fri, May 13, 2011 at 10:13 PM, Jayachandran C. > <jayachandranc@xxxxxxxxxxxxxxxxx> wrote: > > Can you send me the patchset which works on top of queue with any > > debugging you want enabled? I can try that and send you the results. > > > > It is also possible that something is broken with the XLR platform code, > > it is currently almost straight r4k... > > Well, David suggested adding "#define DEBUG 1" at the very top of > tlbex.c, then booting with "debug" and posting the TLB refill handler > to make sure the RI/XI code isn't getting enabled. That seems like a > reasonable start. Even if there's no smoking gun, we'd still be able > to compare our TLB handlers side-by-side. > > Personally I don't have any other leads or patches to try. These > changes work fine for me in every configuration I am able to test: > > 32-bit MIPS32 system, 32-bit kernel (non-RIXI) > 32-bit MIPS32 system, 32-bit kernel (XI) > 64-bit R5000 system, 32-bit kernel (non-RIXI, with 64-bit physical addresses) > 64-bit R5000 system, 64-bit kernel (non-RIXI) > > So it's really best for somebody to debug the problem hands-on, on the > system that showed the issue. I will try this patch again on top of 'queue' with debugging and send you an update. Hope to do it today or tomorrow. JC.
