Re: UP APIC reenabling vs. cpu type detection ordering

From: H. Peter Anvin (
Date: Wed Feb 07 2001 - 12:43:21 EST

Mikael Pettersson wrote:
> > In other words, I'd like to see a reason for making any vendor-specific
> > determinations, and if so, they should ideally be centralized to the CPU
> > feature-determination code.
> The Pentium 4 has a local APIC. It's not 100% compatible with the P6, and
> you sometimes have to know which one you're poking. CPUID returns the
> APIC feature bit. Should we mask its APIC capability? Of course not.

What's so "of course" about it? It mostly depends on how ugly the
determination is.


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