[openstack-dev] [nova] Discussions for ivshmem support in OpenStack Nova

Jay Pipes jaypipes at gmail.com
Wed Jul 26 15:53:06 UTC 2017

On 07/26/2017 09:57 AM, Daniel P. Berrange wrote:
> On Wed, Jul 26, 2017 at 09:50:23AM -0400, Jay Pipes wrote:
>> On 07/26/2017 03:06 AM, TETSURO NAKAMURA wrote:
>>> Hi Nova team,
>>> It has been quite a long time since the last discussion,
>>> but let me make sure one thing about the thread below.
>>> IIUC, Nova is not welcome ivshmem support because it is no longer
>>> supported by DPDK+QEMU.
>>> But how would you say if it is supported out of DPDK-tree and can be
>>> used from the newest qemu version ?
>>> We are now developing SPP, a DPDK-based vswitch, and thinking about
>>> trying to implement ivshmem support under our SPP code tree if nova (or
>>> at first libvirt community) is acceptable for ivshmem configuration.
>>> Your advice will be very helpful for our decision-making in our project.
>> I think this is a question that the libvirt community would first need to
>> weigh in on since Nova is downstream from libvirt -- at least in the sense
>> of low-level hypervisor support.
> Libvirt already supports ivshmem device config
>    http://libvirt.org/formatdomain.html#elementsShmem

Sorry, I suppose I should have said QEMU, not libvirt. Daniel, you were 
the one that specifically discouraged doing anything on ivshmem to Tetsuro:



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