Re: doublefault debugging (was Re: Linux v2.5.62 --- spontaneous reboots)

[Martin J. Bligh]

>> Ok, the 4kB stack definitely won't work in real life, but that's because 
>> we have some hopelessly bad stack users in the kernel. But the debugging 
>> part would be good to try (in fact, it might be a good idea to keep the 
>> 8kB stack, but with rather anal debugging. Just the "mcount" part should 
>> do that).
> 
> You also need IRQ stacks to get down to 4K. The wrong pattern of ten
> different IRQ handlers using a mere 200 bytes each will eventually
> happen and eventually kill you otherwise.

That's in Dave's patchset, and 4K stacks is a config option for now.

M.