Re: turning on options MULTIPROCESSOR soon

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Tue, Jan 17, 2012 at 12:41:37PM -0800, Brian Buhrow wrote:
>       hello. I hav a question about the dom0 and multiprocessor.  On my 5.1
> amd64-based xen server,  I have:
> 
> mainbus0 (root)
> cpu0 at mainbus0 apid 0
> cpu1 at mainbus0 apid 2
> cpu2 at mainbus0 apid 18
> cpu3 at mainbus0 apid 20
> cpu4 at mainbus0 apid 32
> cpu5 at mainbus0 apid 34
> cpu6 at mainbus0 apid 50
> cpu7 at mainbus0 apid 52
> cpu8 at mainbus0 apid 1
> cpu9 at mainbus0 apid 3
> cpu10 at mainbus0 apid 19
> cpu11 at mainbus0 apid 21
> cpu12 at mainbus0 apid 33
> cpu13 at mainbus0 apid 35
> cpu14 at mainbus0 apid 51
> cpu15 at mainbus0 apid 53
> 
> Does this mean the dom0 is running in multicpu mode, or is it only running
> with one CPU?

If it's netbsd-5 it's definitively one CPU. These are the CPUs enumerated
by ACPI (dom0 needs to know them to setup interrupts properly),
the CPUs useable by a domain (0 or U) are vcpu, not cpu.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--