>>> On 2009/09/30 at 14:56, Jan Bakuwel <jan.bakuwel@xxxxxxxxx> wrote:
Hi Nick,
I can recommend using a serial server (for instance from
http://www.sena.com) as a much easier and more flexible approach...
best,
Jan
Nick Couchman wrote:
>
> >>> On 2009/09/30 at 09:07, "Dustin Henning"
> <Dustin.Henning@xxxxxxxxxxx> wrote:
>
> You're likely to get the "sorry, you're out of luck" response, but
> IIRC, PCI Passthrough can be used with one type of domU without
> VT-d/iommu.
> This may require custom compilation or something, though, as it poses a
> security risk. The answer should be hidden deep within the archives
> of this
> mailing list.
> Dustin
>
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Nick Couchman
> Sent: Wednesday, September 30, 2009 11:01
> To: XEN Mailing List
> Subject: [Xen-users] PCI Passthrough
>
> A question that I think I probably know the answer to, but I want to
> verify.
> Do PCI Passthrough to HVM domUs require VTd or IOMMU? From what I've read
> in various places around the Internet, the answer is yes, but it's never
> been explicitly stated. I have a multi-port PCI serial card on a
> non-VTd-capable machine that I want to passthrough to a Windows domU. PCI
> passthrough would be the easiest option, except for the lack of VTd. I
> tried doing something with the IRQ and IOPORTS to pass it through, but I
> ended up with a device type "Xen Ioports" in my Windows domU and couldn't
> really get the correct driver installed. Any hints would be appreciated -
> even if it's to say, "Sorry, you're out of luck - go buy a machine with
> VTd."
>
> Thanks!
> -Nick
>
>
>
> Thanks, Dustin...I'll do some more searching and see what I can come
> up with.
>
>
> -Nick
>
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Thanks, Jan
Unfortunately the end user wants the "direct-connected" serial ports available
as a backup in case the network fails - using a network-based serial server to
protect against network failure isn't probably going to work for me. We
already use quite a few of Digi's serial port servers around here, so we're
familiar with the concept, just have to use something else in this case.
-Nick
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