Re: [fedora-virt] Support for modems and other such physical hardware?
On Fri, 2012-06-15 at 10:38 -0600, Eric Blake wrote:
On 06/15/2012 10:02 AM, Greg Scott wrote:
> Hi have a situation with a Windows 2003 server that uses a fax modem.
> I'd love to P2V this server but I need support for a Brooktrout
> faxmodem. The idea is, just pass anything to/from this hardware
> directly to the Windows guest VM, so the guest VM "thinks" it's
> connected to the faxmodem. I haven't run across anything that says I
> can do that with KVM virtual machines. Any ideas?
With new enough hardware, or if you don't mind the security risks with
older hardware where iommu was incomplete and could allow a malicious
guest to take over the host,
iommu is a requirement for PCI assignment, any partial support for
iommu-less operation has been disabled as it never worked upstream and
presented a security hole. Google guesses this is a PCI device, so
you'll need a system with VT-d or AMD-Vi (if it's indeed a legacy PCI
device vs a PCI-e device, it's often easier to make those work on VT-d).
Thanks,
Alex