[question]qemu: any plan to support ivshmem-plain migration?

Daniel P. Berrangé berrange at redhat.com
Mon Jul 6 13:47:44 UTC 2020

On Mon, Jul 06, 2020 at 01:14:04PM +0000, Wangxin (Alexander, Cloud Infrastructure Service Product Dept.) wrote:
> Hi, Martin
> Ivshmem-plain device support property role with 'master'(master=on) or 'peer'(master=off, default mode), which controls
> to copy the shared memory on migration to the destination host or not.
> https://git.qemu.org/?p=qemu.git;a=blob;f=docs/system/ivshmem.rst;h=b03a48afa3ae7258bbe43490180fc5732b1f6c8c;hb=HEAD
> And libvirt does not support to configure 'role' yet, see msg
> https://www.redhat.com/archives/libvir-list/2016-August/msg00591.html
> Qemu use 'master=off' as ivshmem-plain default property, the guest create by libvirt api can't be migrated now.
> Do you have an plan to support the property 'role' and ivshmem-palin migration?

I would assume no one is actively working on it since it is 4 years since
that quoted message. If you wish to try to implement it, we'll review any

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