Re: [Xen-users] Intel VT-d Support

[Alexander Piavka <piavka@xxxxxxxxxxxx>]

On Wed, 5 Mar 2008, Igor Chubin wrote:

> On Mi, MÃr 05, 2008 at 02:58:52 +0200, Alexander Piavka wrote:
> > > I use HP Compac dc7800 [1] fom my experiments.
> > > I know that this hw (hw with VT-d support) is very rare,
> > > so as far I can touch it now with my own hands, I want to try VT-d on it.
> > >
> > >
> > > [1] 
> > > http://h10010.www1.hp.com/wwpc/us/en/sm/WF06a/12454-12454-64287-321860-3328898-3459241.htm
> >  Hi Igor,
> > Does xen 3.1 vanilla kernel 2.6.18 work ok on this hardware,
> > or you had to use some ubuntu or fedora xen kernel?
> Vanilla kernel works fine
> and Debian GNU/Linux (2.6.18) works fine.
>
> Just one thing:
> to boot kernel correctly I must
> specify
>
> pci=nommconf
 At least it's better than 
all-generic-ide pci=nommconf irqpoll
 which i had to specifiy with ICH9 chipset to boot non xen 2.6.18 kernels, 
and still it it did not work with xen vanilla kernel 2.6.18, the only
xen enabled kernel which reasonably worked with ICH9 chipset was from ubuntu.

 Another question, as i understand with VT-d and pci passthrough enabled in 
the xen-3.2 kernel it should be possible to give HVM domU direct & 
priviliged access to the whole pci disk controller. But is it possible to
give HVM domU direct & priviliged access only to specific hard disk 
attached to this disk controller?
 Thanks
 Alex

> as kernel command line argument.
>
> >  Thanks
> >  Alex
> --
> WBR, i.m.chubin
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