On Wed, 2007-10-24 at 16:40 -0600, Grant Likely wrote: > On 10/24/07, Grant Likely <[EMAIL PROTECTED]> wrote: > > > Not completely implausible, but a) why isn't this seen on basically > > > every machine with software TLB? b) why does -local- GDB, which is > > > presumably doing much less work than gdbserver + network stack, not fail? > > > > a) I don't know.... very odd. > > > > b) gdb is big. It probably touches far more pages (via library calls) > > than gdbserver. The network stack is also big, but it's probably more > > localized too. > > > > Niceing down the host also makes sense because if the PC is being slow > > then the target may go off and run other things while between setting > > the breakpoint and getting the 'go' command. > > > > Can you grab a snapshot of the TLB before and after setting the breakpoint? > > Or; probably more relevant, before and after the page copy?
COW does ptep_clear_flush before setting the new TLB which does a flush_tlb_page() so that should work. Ben. _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
