Pravin, There are some deployments that are using or require older OS distributions using qemu versions prior to version 2.1, thus would require the support for vHost-cuse. Most general reason is qualification cycles for new OS versions. The patch provides compile time support for choosing which vHost version to use. The support for vhost-cuse should be kept for at least several releases with documentation indicating it will be eventually deprecated.
Gerald On 4/2/15, 10:31 PM, "Pravin Shelar" <pshe...@nicira.com> wrote: >On Thu, Apr 2, 2015 at 8:37 AM, Traynor, Kevin <kevin.tray...@intel.com> >wrote: >> >>> -----Original Message----- >>> From: dev [mailto:dev-boun...@openvswitch.org] On Behalf Of Pravin >>>Shelar >>> Sent: Friday, March 27, 2015 6:08 PM >>> To: Flavio Leitner >>> Cc: dev@openvswitch.org >>> Subject: Re: [ovs-dev] [PATCH RFC 1/1] netdev-dpdk: add dpdk >>>vhost-user ports >>> >>> On Fri, Mar 27, 2015 at 6:57 AM, Flavio Leitner <f...@sysclose.org> >>>wrote: >>> > On Fri, 20 Mar 2015 10:53:14 -0700 >>> > Pravin Shelar <pshe...@nicira.com> wrote: >>> > >>> >> On Thu, Mar 19, 2015 at 11:48 AM, Ciara Loftus >>> >> <ciara.lof...@intel.com> wrote: >>> >> > This patch adds support for a new port type to the userspace >>> >> > datapath called dpdkvhostuser. It adds to the existing >>> >> > infrastructure of vhost-cuse, however disables vhost-cuse ports in >>> >> > favour of vhost-user ports. >>> >> > >>> >> > A new dpdkvhostuser port will create a unix domain socket which >>>when >>> >> > provided to QEMU is used to facilitate communication between the >>> >> > virtio-net device on the VM and the OVS port. >>> >> > >>> >> Thanks for the patch. I have pushed OVS DPDK vHost cuse patch. Once >>>we >>> >> add support for vhost user, vhost-cuse support should be dropped. >>> > >>> > Do you mean to literally take vhost-cuse out of the code? If so, yes, >>> > I think that makes sense. >>> > >>> >>> Yes. thats what I meant. >> >> One issue with removing is that vhost-user is only supported from QEMU >>2.1.0 >> onwards. If anyone is using an older version of QEMU they would not be >>able >> to use vhost-user, whereas vhost-cuse will support older versions of >>QEMU. >> > >Are there distribution still using older QEMU? _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
