[Fedora-xen] Is pci-pasthrough enabled for F9 DomU?

[Daniel P. Berrange]

On Tue, May 13, 2008 at 04:55:04PM -0700, snowcrash+xen at gmail.com wrote:
> >  This isn't what you'll want to hear but...
> >
> >  To be perfectly honest, it is not really a high priority. Our priorities
> >  are getting the DomU stuff merged upstream & working reliably and continuing
> >  the Dom0 work, since those impact every single user of Xen. Unfortunately
> >  PCI pasthrough is quite a niche userbase, so its hard to justify work on it
> >  in the short term given limited resources. If someone has skills & time to
> >  volunteer to work on the PCI passthrough stuff.....
> 
> ouch!  a large %age of the boxes we deploy have a firewall/DomU & and
> a NAS/Domu, each with dedicated, pass'd-thru NICs.  without passthru,
> performance is lousy.
> 
> so, iiuc "not really a high priority", i guess -- short of 'growing'
> someone with the skills -- we're hosed.
> 
> the unfortunate irony is we *moved* to Fedora because the passthru
> support in RHEL was flaky, and Fedora was touted as "the right way to
> get it".  regressing a working feature that differentiates the distro
> would not have been my first choice ... majority, or otherwise.

PCI passthrough *is* supported in RHEL-5 Xen kernels. There was a bug in the
RHEL-5.1 Dom0 userspace, but that is fixed in 5.2. AFAIK, any RHEL-5.x 
guest supports PCI passthrough.

Dan.
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