On 11 Aug 2005, at 00:25, Zachary Amsden wrote: > > That said, I'm not adverse to hacking up the APIC code to encapsulate > the hardware accessors, I'm just unsure if it is actually a > requirement. It's not a requirement for unprivileged guests, but our domain0 is responsible for a lot of platform bringup. In particular, Xen itself has no ACPI interpreter, so domain0 is responsible for finalising IRQ routing and redirection (through chipset steering logic and IOAPICs). -- Keir