On Fri, Jun 22, 2018 at 05:09:55PM +0200, Cornelia Huck wrote: > Would it be more helpful to focus on generic > migration support for vfio instead of going about it device by device? Just to note this approach is actually device by device *type*. It's mostly device agnostic for a given device type so you can migrate between hosts with very different hardware. And support for more PV device types has other advantages such as security and forward compatibility to future hosts. Finally, it all can happen mostly within QEMU. User is currently required to enable it but it's pretty lightweight. OTOH vfio migration generally requires actual device-specific work, and only works when hosts are mostly identical. When they aren't it's easy to blame the user, but tools for checking host compatiblity are currently non-existent. Upper layer management will also have to learn about host and device compatibility wrt migration. At the moment they can't even figure it out wrt software versions of vhost in kernel and dpdk so I won't hold my breath for all of this happening quickly. -- MST _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
