[Rust-VMM] Crate for vhost-user device backend?

[Jiang Liu]

> On Jan 17, 2019, at 11:00 PM, Liu, Jing2 <jing2.liu at linux.intel.com> wrote:
> 
> Hi Jiang,
> 
> On 1/17/2019 7:32 PM, Jiang Liu wrote:
>>> On Jan 17, 2019, at 7:30 PM, Dr. David Alan Gilbert <dgilbert at redhat.com> wrote:
>>> 
>>> * Jiang Liu (liuj97 at gmail.com) wrote:
>>>> 
>>>> 
>>>>> On Jan 17, 2019, at 6:58 PM, Marc-André Lureau <marcandre.lureau at gmail.com> wrote:
>>>>> 
>>>>> Hi
>>>>> 
>>>>> On Thu, Jan 17, 2019 at 2:56 PM Jiang Liu <liuj97 at gmail.com <mailto:liuj97 at gmail.com>> wrote:
>>>>>> 
>>>>>> We are working on a vhostuser-rs crate, and planned to posted it for RFC later.
>>>>> 
>>>>> Great news! Looking forward for it! Feel free to share WIP if you want help.
>>>>> 
>>>>>> 
>>>>>>> On Jan 17, 2019, at 6:52 PM, Stefan Hajnoczi <stefanha at redhat.com> wrote:
>>>>>>> 
>>>>>>> Hi,
>>>>>>> Has anyone implemented a vhost-user device backend in Rust?
>>>>>>> 
>>>>>>> QEMU's libvhost-user and DPDK's librte_vhost are C implementations that
>>>>>>> provide a device backend API.  They allow you to implement
>>>>>>> vhost-user-net, vhost-user-blk, and vhost-user-scsi devices as a
>>>>>>> separate process from the main emulator.
>>>> We are working on this direction, but  enhancements to firecracker/rust-vmm are need to support
>>>> vhostuser. For example we need to support memfd based memory slot management. It’s really
>>>> great if we could cooperate on it.
>>> 
>>> Are you working on it for the hypervisor side, or the device side, or
>>> both?
>> Currently we are focusing on the hypervisor side and vhostuser transport layer. No work on the virtio backend device yet.
> 
> What application will be the virtio backend on your scenario?
> 

Hi Jing,
	Net and blk/scsi backends should be enough for most cases.


> Jing
> 
>>> 
>>> Dave
>>> 
>>>> 
>>>>>>> 
>>>>>>> Stefan
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>>>>>> 
>>>>>> 
>>>>>> _______________________________________________
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>>>>> 
>>>>> 
>>>>> 
>>>>> -- 
>>>>> Marc-André Lureau
>>>> 
>>> 
>>>> _______________________________________________
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>>>> http://lists.opendev.org/cgi-bin/mailman/listinfo/rust-vmm
>>> 
>>> --
>>> Dr. David Alan Gilbert / dgilbert at redhat.com / Manchester, UK
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