Re: Faster reboots - calling _start?

[ebiederm@xmission.com (Eric W. Biederman)]

"Martin J. Bligh" <Martin.Bligh@us.ibm.com> writes:

> > Wouldn't it be easier to just ljmp to the start address of the kernel in
> > memory (the address after the bootloader has done its thing), effectively
> > restarting the kernel from line 1? Or is tehre an issue with some
> > hardware being in an invalid state when doing this?
> 
> Two issues with that:
> 
> 1. I want to be able to boot a different kernel on reboot - this
> is a development machine.
> 
> 2. I believe we free all the __init stuff around the end of
> start_kernel, so the initial functions and data just aren't 
> there any more ... of course that could be changed, but it's
> both a more major change than I really want to do, and it still
> doesn't solve (1) ;-)

Seriously check out my code it should just work unless there are special
apic shutdown rules for NUMAQ machines.

Eric