On Thu, Apr 02, 2009 at 12:02:09PM +0300, Avi Kivity wrote: > > There is no choice. Exiting from the guest to the kernel to userspace > is prohibitively expensive, you can't do that on every packet.
I was referring to the bit between the kernel and userspace. In any case, I just looked at the virtio mitigation code again and I am completely baffled at why we need it. Look at Greg's code or the netback/netfront notification, why do we need this completely artificial mitigation when the ring itself provides a natural way of stemming the flow? Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <[email protected]> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
