Re: [patch] enabling APIC and NMI watchdog on UP systems

From: Maciej W. Rozycki (macro@ds2.pg.gda.pl)
Date: Fri Sep 29 2000 - 08:10:40 EST

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On Fri, 29 Sep 2000, Ingo Molnar wrote:

> yep, this was my point. Eg. i dont think we cleared the performance
> counters on AP APICs before, so in theory, if some other OS sets them up
> and Linux is soft-booted (or loadlin-ed), then there might be boot
> problems.

Hmm, on a second thought, I recalled local APIC registers get cleared on
a receipt of an INIT IPI. So this should really not matter (unless there
are errata in certain hardware), apart from the BSP APIC in the PIC mode,
which we don't send an INIT IPI.

Maciej

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

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