On Thu, Nov 18, 2010 at 07:09:08PM +0200, Michael S. Tsirkin wrote: > Store irq routing table pointer in the irqfd object, > and use that to inject MSI directly without bouncing out to > a kernel thread. > > While we touch this structure, rearrange irqfd fields to make fastpath > better packed for better cache utilization. > > This also adds some comments about locking rules and rcu usage in code. > > Some notes on the design: > - Use pointer into the rt instead of copying an entry, > to make it possible to use rcu, thus side-stepping > locking complexities. We also save some memory this way. > - Old workqueue code is still used for level irqs. > I don't think we DTRT with level anyway, however, > it seems easier to keep the code around as > it has been thought through and debugged, and fix level later than > rip out and re-instate it later. > > Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx> > --- > > OK, this seems to work fine for me. Tested with virtio-net in guest > with and without vhost-net. Pls review/apply if appropriate. Acked-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
