Hi Peter, I think this patch set was already merged by Michael in Jun. :). http://git.qemu.org/?p=qemu.git;a=commit;h=434027badb421863b85ffdb4769966533c001cfa
-- Best Regards, Yingshiuan Pan 2015-09-19 0:24 GMT+08:00 Peter Maydell <peter.mayd...@linaro.org>: > On 12 May 2015 at 09:10, Pavel Fedin <p.fe...@samsung.com> wrote: > > This patch set introduces eventfd support for virio-mmio. It was > originally > > published by Ying-Shiuan Pan but never got it to upstream: > > https://lists.gnu.org/archive/html/qemu-devel/2014-02/msg00715.html > > I have updated and successfully tested it with vhost-net. I confirm > that this > > solution significantly improves the network performance even without > irqfd. > > I would like to upstream it, since virtio-mmio is still there. I know > that > > some of you consider it deprecated, however i believe this is not > entirely > > true. Because you can add it to machine models which are not supposed to > > have PCI (like vexpress). > > An old patch set relied on additional "eventfd" option in order to > disable > > the support if not implemented in kernel. My version simply checks > > kvm_eventfds_enabled() for this purpose, so backwards compatibility is > much > > better. > > I decided to leave this set in three parts because ioeventfd support > should > > be enabled only when both host and guest notifiers are in place. I > believe > > it will not work with partial implementation, at least because vhost-net > > requires both sets of eventfds. In this version i added correct reset > handling. > > Hi Pavel. I've been going through my to-review folder and found this > series from back in May lurking in it. Sorry I never got to reviewing it. > Do you think it's still a change worth having? If so, please can you > rebase and resend and I'll look at it this time around. > > thanks > -- PMM >
