On Thu, 1 Oct 2015 13:14:08 +0300 "Michael S. Tsirkin" <mst at redhat.com> wrote:
> On Thu, Oct 01, 2015 at 12:43:53PM +0300, Avi Kivity wrote: > > >There were some tentative to get it for other (older) drivers, named > > >'bifurcated drivers', but it is stalled. > > > > IIRC they still exposed the ring to userspace. > > How much would a ring write syscall cost? 1-2 microseconds, isn't it? The per-packet budget at 10G is 62ns, a syscall just doesn't cut it.
