Thanks you Tom and George for the tips on using kgdb with 2.6.13-rc4-mm1.
I almost have it working but kgdb seems to have a few issues. I can get it running from the dev machine using the kgdb and console=kgdb boot options on the test kernel. The kernel waits as it should and when I attach with "target remote /dev/ttyS0" and I can continue the boot but eventually it gets to a point in the boot where it frees unused kernel memory successfully and then a warning, "unable to open an initial console", followed by, "Kernel panic - not syncing: Attempted to kill init!" Removing the console=kgdb boot option and the machine boots all the way to run level 5. I tried to break into kgdb at this point using the $echo -e "\003" > /dev/ttyS0 from the dev machine but the test kernel panics at gdb_interrupt+75 when it receives anything on the serial port. Hmmm... I'm wondering if I'm maybe just the first to try this on EM64T (kernel builds in the arch/x86_64 tree). Any suggestions welcome. -bryan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/