Subject: Re: [patch 2.4 1/2] backport 2.6 x86 cpu capabilities
From: Albert Cahalan <albert@users.sf.net>
To: linux-kernel mailing list <linux-kernel@vger.kernel.org>
Cc: jgarzik@pobox.com, mikpe@csd.uu.se, m.c.p@wolk-project.de
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Date: 10 Aug 2003 19:59:03 -0400
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Mikael Pettersson writes:

> 2.4.21-rc1 with NCAPINTS==6 hangs at boot in the local
> APIC timer calibration step; before that it detected a
> 0MHz bus clock and the local APIC NMI watchdog was stuck.
> Correcting head.S:X86_VENDOR_ID fixes these problems.
> 
> Without correcting head.S:X86_VENDOR_ID, head.S will store
> the vendor id partly in the capabilities array. This breaks
> both the capabilities and the vendor id. I can't say why 2.6
> works, but obviously the CPU setup code has changed since 2.4.

I may be stating the obvious, but in case not...

If Jeff Garzik missed this, others will too. I hope
that a big comment gets added in both places, assuming
that automatic offset generation isn't practical.


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