[Virtio-fs] [PATCH for-7.2] vhost: enable vrings in vhost_dev_start() for vhost-user devices

[Alex Bennée]

"Michael S. Tsirkin" <mst at redhat.com> writes:

> On Thu, Dec 01, 2022 at 10:14:39AM +0000, Alex Bennée wrote:
>> Do you think rust-vmm's vhost crates have enough of the state
>> management to manage vhost and vhost-user backends? Maybe it would be a
>> good experiment in replacing a (small well defined) piece of
>> functionality with rust?
>> 
>> That said there is a lot of deep magic in the vhost-net stuff which I
>> think is down to the interaction with things like vdpk and other network
>> optimisations that might be missing. For the rest of the devices most of
>> the code is basically boiler plate which has grown variations due to
>> code motion and change. This is the sort of thing that generics solves
>> well.
>
> Not sure what you want to replace with what though, libvhost-user or
> vhost-user bits in qemu?

The vhost-user bits in the main QEMU binary. We already don't use
libvhost-user for most of our backends anyway ;-)

-- 
Alex Bennée