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? ÂI 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. Would you be able to post your rootfs image? Are you using "usr/dev_file_list usr/rootfs" from CONFIG_INITRAMFS_SOURCE? That could eliminate one other potential difference between our configurations.