Re: [Xen-users] Exporting a PCI Device

[Sadique Puthen <sputhenp@xxxxxxxxxx>]

Javier Guerra wrote:
> On 2/18/08, Jan Kalcic <jandot@xxxxxxxxxxxxxx> wrote:
>   
> > this is exactly what I was thinking. More hardware and better
> > performance. I just wanted to know if there is, as you said, a tricky
> > solution for this which would avoid to purchase new hardware. Of course,
> > any other suggestion is welcome.
> >     
> note that assigning real hardware to a DomU prevents it from being
> migrated.  IOW, PCI passtrhough ties the DomU to the hardware.
>   
Moreover, passing through pci devices means that you are trusting that 
guest just like dom0 since the guest now can do DMA which somewhat 
crumbles the memory isolation assured by the hypervisor if you are not 
using Intel VT-d for passing through devices to guests.
--Sadique

> (is there any brave soul trying to emulate PCI-hotplug to make that doable?)
>
>   
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