Re: [PATCH v10 0/7] PCI: Linux kernel SR-IOV support

Matthew Wilcox
2009-03-08T15:01:23Z

On Sun, Mar 08, 2009 at 04:30:16PM +0200, Avi Kivity wrote:
> Matthew Wilcox wrote:
> >On Tue, Feb 24, 2009 at 12:47:38PM +0200, Avi Kivity wrote:
> >>Do those patches allow using a VF on the host (in other words, does the
> >>kernel emulate config space accesses)?
> >
> >SR-IOV hardware handles config space accesses to virtual functions. No
> >kernel changes needed for that aspect of it.
>
> Patches 2 and 3 of the patchset that enables SR/IOV in kvm [1] suggest
> that at the config space is only partially implemented.
>
> [1] http://thread.gmane.org/gmane.comp.emulators.kvm.devel/29034

I believe Red Hat are now members of the PCI SIG, you really should
download the SR-IOV spec that Yu Zhao keeps pointing at. It's going to
be very hard to have a sensible discussion if you haven't read it.

--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."