Re: PAE, PCI pass-through

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

On Tue, Feb 17, 2009 at 10:28:47AM +1100, Sarton O'Brien wrote:
> Manuel Bouyer wrote:
> >Hi,
> >I did a bunch of xen-related commits yesterday, here's some words
> >about it:
> >
> >- I fixed a size mismatch between function prototypes and assembly
> >  implementation of bus_space when PAE is defined. With this hardware
> >  drivers are working with PAE kernels. After fixing a few printf formats
> >  and type mismatch it's possible to build a working PAE XEN3_DOM0
> >  kernel. I added a XEN3PAE_DOM0 kernel config, but it's not built
> >  by default for now. I also updated the xenkernel3 package to
> >  install PAE xen kernels in addition to non-PAE ones.
> >  Upgrading to PAE is just a matter of installing a PAE-enabled xen.gz
> >  and /netbsd, and PAE kernels for domUs, no other changes are required.
> >
> >- I commited the xen3 PCI front-end device. To use it, add to your
> >  domU config file
> >xpci* at xenbus ?
> >pci* at xpci ?
> >  and then the PCI drivers you need.
> >  It has been succesffully tested only with ahc(4) and piixide(4).
> >  uhci(4) failed trying to allocate a large contigous DMA buffer;
> >  this needs to be tracked down.
> >  For now, you need a linux dom0 to use it.
> 
> That's pretty cool. Well done and thank you. I'm sure I'm not the only 
> one who greatly appreciates your efforts.
> 
> Out of curiosity, if I were to require /dev/sd0 (a usb disk attached to 
> dom0) as a physical device (rather than a virtual one) under a domu, 
> would that require usb to be passed to the domu?

the USB controller, yes. I think there's a front/backend device pair
to export individual USB devices to a domU but I've not seen it yet


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