Re: start_kernel(): bug: interrupts were enabled early

[mlachwani <mlachwani@mvista.com>]

Martin Michlmayr wrote:
> I see the following message when I boot a 2.6.18 kernel on a SWARM
> board:
>
> PID hash table entries: 4096 (order: 12, 32768 bytes)
> Using 512.000 MHz high precision timer.
> start_kernel(): bug: interrupts were enabled early <--
> Console: colour dummy device 80x25
> Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes)
> Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes)
>
> Has anyone else seen this?
>   
Yes, I do see it. I have a patch for it as well. Will send it out shortly.

The issue is the on_each_cpu() calls made in arch/mips/mm/c-sb1.c. This 
function enables the interrupts on exit. As a result, you will get this 
error
on bootup. The fix is  similar to arch/mips/mm/c-r4k.c, i.e. to have 
something like r4k_on_each_cpu().

Thanks,
Manish Lachwani