Hi On Fri, Dec 4, 2015 at 3:55 PM, Tetsuya Mukawa <muk...@igel.co.jp> wrote: >> What's the use case or test case? > > One of example is userspace device driver like DPDK PMD. > Actually, I've found this fd related behavior using DPDK virtio-net PMD. > Could you please check below to know my use case more? > http://thread.gmane.org/gmane.comp.networking.dpdk.devel/28467/focus=28493
Thanks. Why not use memory-backend-file with share=on ? I think I understand you want to use the same BAR address as the host shared memory location to avoid extra offset computation. I don't know about the limitations here. Is this extra offset really worth saving? Finally, I wonder what qemu is really doing in the end ;) Michael, could you comment about this vhost-user use case? (see above linked thread) -- Marc-André Lureau
