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

[Igor Chubin <igor@xxxxxxx>]

...
>> 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.


What happens when you specify only pci=nommconf ?

>
>  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?

No, it is impossible, AFAIK.
You can passthrough only entire PCI-device,
so you can not give access to just one disk.


To say short, you can passthrough units,
which you can see using lspci command.


-- 
WBR, i.m.chubin


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