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Re: [Qemu-devel] [PATCH] ivshmem: Store file descriptor for vhost-user n
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From: |
Marc-André Lureau |
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Subject: |
Re: [Qemu-devel] [PATCH] ivshmem: Store file descriptor for vhost-user negotiation |
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Date: |
Mon, 7 Dec 2015 12:31:30 +0100 |
Hi
On Fri, Dec 4, 2015 at 3:55 PM, Tetsuya Mukawa <address@hidden> 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