[PATCH 0/16 v6] PCI: Linux kernel SR-IOV support

Avi Kivity avi at redhat.com
Sun Nov 9 04:44:06 PST 2008


Greg KH wrote:
> It's that "second" part that I'm worried about.  How is that going to
> happen?  Do you have any patches that show this kind of "assignment"?
>
>   

For kvm, this is in 2.6.28-rc.

Note there are two ways to assign a device to a guest:

- run the VF driver in the guest: this has the advantage of best 
performance, but requires pinning all guest memory, makes live migration 
a tricky proposition, and ties the guest to the underlying hardware.
- run the VF driver in the host, and use virtio to connect the guest to 
the host: allows paging the guest and allows straightforward live 
migration, but reduces performance, and hides any features not exposed 
by virtio from the guest.


-- 
error compiling committee.c: too many arguments to function



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