Re: [PATCH v1 10/12] hw/arm: introduce xenpv machine

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Sun, 16 Oct 2022, Julien Grall wrote:
> Hi,
> 
> There seem to be some missing patches on xen-devel (including the cover
> letter). Is that expected?
> 
> On 15/10/2022 06:07, Vikram Garhwal wrote:
> > Add a new machine xenpv which creates a IOREQ server to register/connect
> > with
> > Xen Hypervisor.
> 
> I don't like the name 'xenpv' because it doesn't convey the fact that some of
> the HW may be emulated rather than para-virtualized. In fact one may only want
> to use for emulating devices.
> 
> Potential name would be 'xen-arm' or re-using 'virt' but with 'accel=xen' to
> select a Xen layout.

The benefit of 'xenpv' is that it doesn't require any changes to libxl.
It is even backward compatible so it could be used with an older version
of Xen/libxl. Backward compatibility aside, if we come up with a
different name then we'll need changes to libxl and to manage those
changes. For instance, if we use 'xen-arm' that would mean we would need
to handle per-arch QEMU machine names.