Re: port-amd64/46465: netbsd-5 branch no longer boots as KVM guest

[Jukka Ruohonen <jruohonen%iki.fi@localhost>]

On Fri, May 18, 2012 at 08:55:02PM +0000, David Laight wrote:
>  I gave up working through the morass of the ide code, 'boot -2'
>  to disbale ACPI let it boot - which was enough for the tests I was
>  running.

Let's make something clear. Because these acronyms are difficult.

        1. When you boot with ACPI, you typically get (IO)APIC.

        2. When you boot without ACPI, you typically get PIC.

Both are due BIOS.

So many of the bugs related to "ACPI" are in fact related to ioapic(4).
And you can't do (2) because PIC simply is not suitable for SMP.