On Wednesday, February 13, 2013 6:56:06 pm CeDeROM wrote: > On Wed, Feb 13, 2013 at 4:48 PM, John Baldwin <j...@freebsd.org> wrote: > >> The simple answer that I have deduced is that APIC is MANDATORY for > >> AMD64 machines and they won't run otherwise? This is why generic AMD64 > >> install fails when no APIC is enabled in the VBox? > > > > No, it is not quite like that. x86 machines have two entirely different > > sets of interrupt controllers. (...) > > Hello John :-) Things now are more clear to me, thank you for your > extensive explanation!! :-) I am wondering in that case if it wouldn't > be a good idea to put atpci (old x86 IRQ handler) in the GENERIC > configuration, or at least in the default installer kernel, so it is a > safe fallback for a AMD64 machines with no APIC support, as for > example VBox with APIC disabled..? Is atpic removed on purpose so it > enforces use of new APIC and so better performance?
Real hardware should always use device apic on amd64. Even for a VM you should prefer apic. That is, I think you should just enable APIC when using VBox. -- John Baldwin _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
