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

From: Ingo Molnar (mingo@elte.hu)
Date: Fri Sep 29 2000 - 05:33:43 EST


On Fri, 29 Sep 2000, Maciej W. Rozycki wrote:

> [...] AP APICs might be setup randomly, though. [...]

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.

> Clearing of APICs should not hurt but we have to take care not to lose
> any interrupt, as this may lead to a lockup (especially in the
> "noapic" mode).

yep.

        Ingo

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