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SubjectRe: [PATCH 6/6 v3] PCI: document the change
On Tue, Oct 14, 2008 at 12:18:40PM +0800, Dong, Eddie wrote:
> Matthew Wilcox wrote:
> > On Tue, Oct 14, 2008 at 10:14:35AM +0800, Yu Zhao wrote:
> >> As Eddie said, we have two problems here:
> >> 1) User has to set device specific parameters of a VF
> >> when he wants to use this VF with KVM (assign this
> >> device to KVM guest). In this case,
> >> VF driver is not loaded in the host environment. So
> >> operations which
> >> are implemented as driver callback (e.g.
> >> set_mac_address()) are not supported.
> >
> > I suspect what you want to do is create, then configure
> > the device in the host, then assign it to the guest.
> That is not true. Rememver the created VFs will be destroyed no matter
> for PF power event or error recovery conducted reset.
> So what we want is:
> Config, create, assign, and then deassign and destroy and then
> recreate...

Yes, but my point is this all happens in the _host_, not in the _guest_.

> Sorry can u explain a little bit more? The SR-IOV patch won't define
> what kind of entries should be created or not, we leave network
> subsystem to decide what to do. Same for disk subsstem etc.

No entries should be created. This needs to be not SR-IOV specific.

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."

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