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

From: Maciej W. Rozycki (
Date: Fri Sep 29 2000 - 04:59:45 EST

On Fri, 29 Sep 2000, Keir Fraser wrote:

> Another question relating to the setup of local APICs on current
> -testX kernels: how are external interrupts routed through to the
> processor? I thought that setup_local_APIC() used LVT0 to pick up
> external interrupts, but setup_nmi_watchdog() reconfigures LVT0 into
> NMI mode!

 I/O APIC interrupts get delivered to local APICs through the inter-APIC
serial bus.

+  Maciej W. Rozycki, Technical University of Gdansk, Poland   +
+        e-mail:, PGP key available        +

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