* Ingo Molnar <mingo@xxxxxxx> wrote:It locked up after 20 minutes with CONFIG_SMP enabled.
just in case you are using UP-IOAPIC, could you enable CONFIG_SMP
(even if you are running an UP box) and see whether the lockup goes
away? Which was the last -RT kernel that you tried that didnt lock up
in this fashion?
if with CONFIG_SMP it's more stable, could you try the following: turn
off CONFIG_SMP again and edit arch/i386/kernel/io_apic.c and remove this
(there should be only one occurence of this string.)
this will turn the previous IO-APIC logic (used in -V0.7.24) back on.