Re: kexec reboot code buffer

[Martin J. Bligh]

>> > I am fine with memory that is not physically contiguous.  The memory
>> > I really want the kernel is currently sitting on.....
>> 
>> Oh, in that case you should have no problem getting it from ZONE_NORMAL,
>> especially if you can wake up kswapd and wait for a few seconds.
> 
> Nope, kswapd will not free the kernels text segment.  So in practice
> I can use anything below 4GB. 

Oh, I'm well aware that the kernel won't get swapped out ;-) 
I was referring to the getting memory that's "not physically contiguous"
by waking up kswapd ;-)

> There is even a distribution built to be run completely out of a ramdisk. 
> http://warewulf-cluster.org/

Terrifying ;-)
  

M.