Re: [PATCH 1/10] Cr4 is valid on some 486s

[H. Peter Anvin]

Dave Jones wrote:
>  > 
>  > If you have CPU hotplug enabled, you can run SMP code!
>
> Sure, but if you boot with 1 CPU, spinlocks get nop'd to emulate UP,
> and on a 'installed a new cpu' hotplug event, they all come back.

The point that you don't nop if you have hotplug enabled (which is not 
the norm.)

	-hpa
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