Kernel Panic booting cdrom

Linas Vepstas linas at
Tue Apr 24 08:35:59 EST 2007

On Fri, Apr 20, 2007 at 02:05:11PM -0700, David Huffman wrote:
> there may be power and cooling daemons that are not running and try to 
> limit the system resources by limiting the number of cpus. Does this 
> sound right? 

As Michael Ellerman points out, the answer is no.
The idle loop specifically uses instructions that put the
cpu into low-power mode. If you don't call the idle loop, the 
cpu probably won't go into low-power mode!

> The maxcpus=1 argument was something we added to our install boot 
> media years ago and few here remember why it was such a great idea. The 
> power/resource management was the only thing we could come up with.

Ooh, this is worthy of tatooing onto a cluestick.


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