Re: Re: custom kernel (from NetBSD one)

[Manuel Bouyer <bouyer%antioche.lip6.fr@localhost>]

On Mon, May 09, 2005 at 09:17:54PM +0200, Joel CARNAT wrote:
> On Mon, May 09 2005 - 16:27, Manuel Bouyer wrote:
> > On Sat, May 07, 2005 at 06:07:16PM +0200, Joel CARNAT wrote:
> > > Hi,
> > > 
> > > just booting XEN0 (from netbsd-3 src) I see there is no ACPI nor
> > > CardBus support. As I have a laptop with bad APM issues and atheros
> > > wifi cardbus for connection, I feel a bit disapointed ;)
> > > 
> > > 1. is there ACPI and/or cardbus support on Xen (domain0) ?
> > 
> > No. ACPI can't be done as it's not exported by the Xen kernel to the 
> > domains.
> > ACPI is managed by the Xen kernel itself.
> 
>  OK, as soon as the apm thing from NetBSD is not here too.
>  It seems to hang my laptop :(
> 
> > I'm not sure cardbus can work either, because the domain0 kernel doesn't
> > have access to the interrupt routing informations (but the Xen kernel may
> > take care of that).
> 
>  I just tried boot xenlive iso and the linux domain0 don't see it.
>  One trouble is that it is atheros and Linux does not know them straight :(
> 
>  Extending this hardware question, I planned to use Xen to use Linux|FreeBSD
>  IEEE DV cam support. I'm wondering if this will work... As it seems Xen is 
> not
>  100% like the domainX system (in terms of hardware support).

For PCI devices, it's equivalent, as long as there isn't interrupt routing
issues.

>  
>  Does it make sense to run Linux|FreeBSD in domainX if NetBSD/Xen (in 
> domain0) don't
>  support whatever hardware (DV cam recorder, USB umass for digital camerai or 
> even ATI
>  Linux drivers) ?

Yes, as you can hide some devices from domain0 and make them available to
other domains. I'm not sure how this would work for the display adapter
and keyboard/mouse, though.

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