Re: XenServer and viridian

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Mon, Mar 31, 2025 at 02:55:07PM +0100, Stephen Borrill wrote:
> > More code needed ...
> 
> I don't think that's the case. On FreeBSD xenpci0 attaches to that device,
> but appears to do nothing. If I disable the device at boot time, everything
> still works with or without viridian. Xen is detected extremely early on.
> Abridged dmesg on FreeBSD 14.2 here (viridian = true,
> xenpci disabled):
> 
> Hyper-V Version: 0.0.0 [SP0]
>   Features=0x870<APIC,HYPERCALL,VPINDEX,TMFREQ>
>   PM Features=0x0 [C0]
>   Features3=0x8<PCPUDPE>
> XEN: Hypervisor version 4.13 detected.
> [snip]
> xenpv0: <Xen PV bus>

Needs to look at what interface FreeBSD uses to communicate with
Xen in this case. Must be something else than the one we use.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--