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Re: [Xen-devel] [PATCH v2 07/23] vixen: introduce is_vixen() to allow altering behavior



On Sun, Jan 07, 2018 at 12:28:23PM -0800, Anthony Liguori wrote:
> From: Anthony Liguori <aliguori@xxxxxxxxxx>
> 
> Vixen (Virtualized Xen) is a paravirtual mode of Xen where
> paravirtual I/O is passed through from the parent hypervisor
> all the way through the dom0 guest.  The dom0 guest is also
> deprivileged and renumbered to give the appearance that it
> is running as a normal PV guest.
> 
> Signed-off-by: Anthony Liguori <aliguori@xxxxxxxxxx>
> +
[...]
> +static inline bool is_vixen(void)
> +{
> +    return false;
> +}
> +
> +static inline bool vixen_has_per_cpu_notifications(void)
> +{
> +    return false;
> +}
> +
> +static inline bool vixen_ring_process(uint16_t port)
> +{
> +    return false;
> +}

AFAICT only these are vixen specific. The rest can be merged with
pv-in-pvh code.

I'm not sure why they are needed yet. If I can figure that out later I
will ask questions here.

Wei.

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