>>> On 11/19/2010 at 10:54 AM, in message <20101119155427.GA20279@xxxxxxxx>, Marcelo Tosatti <mtosatti@xxxxxxxxxx> wrote: > 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> Acked-by: Gregory Haskins <ghaskins@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
