[syslinux] CPU usage while at syslinux boot prompt

[H. Peter Anvin]

Dag Wieers wrote:
> I was wondering if this was known behaviour ? And if it is something that 
> we can fix ?

This is known behaviour, and there isn't really anything we can do about
it.  The *only* device that we have to talk to that we can guarantee
getting an interrupt for is the keyboard, the rest of the devices *have*
to be handled by polling, via an idle loop.

Vmware broke the PXE spec trying to "fix" this, and all they did was
cause massive trouble elsewhere.

I guess I might put a HLT in *as an option* (because people *will*
complain that the serial port loses characters), but perhaps a better
thing would be to not start the VM until you actually need it...

	-hpa