Re: [RFC 0/4] Enable virtio-fs on s390x

[Cornelia Huck]

On Thu, 25 Jun 2020 12:04:26 +0200
Marc Hartmayer <mhartmay@linux.ibm.com> wrote:

> This RFC is about enabling virtio-fs on s390x. For that we need
>  + some shim code (first patch), and we need
>  + libvhost-user to deal with virtio endiannes as mandated by the spec.
>  
> The second part is trickier, because unlike QEMU we are not certain
> about the guest's native endianness, which is needed to handle the
> legacy-interface appropriately. In fact, this is the reason why just
> RFC.
> 
> One of the open questions is whether to build separate versions, one
> for guest little endian and one for guest big endian, or do we want
> something like a command line option? (Digression on the libvirt
> modeling)
> 
> A third option would be to refuse legacy altogether.

The third option looks the most tempting to me. It is a new device, so
I don't think there's much of a case to be made for pre-virtio-1
support?