Re: [PATCH] boot_cpu_data corruption on SMP x86

From: Maciej W. Rozycki (macro@ds2.pg.gda.pl)
Date: Fri Mar 22 2002 - 09:23:30 EST


On Fri, 22 Mar 2002, Dave Jones wrote:

> > If say the BSP supports cpuid but an AP does not (possible for an
> > i486 setup)
>
> It's also possible on any SMP aware system, but with the warning

 Nope, anything that provides cpuid will update the model and the stepping
correctly.

> "you use asymetric CPUs, you get to keep the pieces". I don't recall
> 486's being any exception to this rule.

 Cpuid vs non-cpuid is a non-issue for the i486 -- the glue logic is
external as well as APICs and we don't care about the SMM, so no need to
unsupport it explicitly.

-- 
+  Maciej W. Rozycki, Technical University of Gdansk, Poland   +
+--------------------------------------------------------------+
+        e-mail: macro@ds2.pg.gda.pl, PGP key available        +

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