On 05/16/13 22:43, Blair Bethwaite wrote: > Hi all, > > We're running a KVM based OpenStack cloud. I recently realised we don't > have the IOMMU turned on in our hypervisors. All indications I know about > and can find suggest it's only really useful if you want guests accessing > host devices directly, e.g., PCI pass-through. But I wonder if there are > any other performance advantages to be gained...? Virtio, for one, doesn't > seem to use this/need this. > > > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack at lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > No, it's generally only for device pass-through. -- -- Matthew Thode (prometheanfire) -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 836 bytes Desc: OpenPGP digital signature URL: <http://lists.openstack.org/pipermail/openstack/attachments/20130517/eb15930b/attachment.sig>