Re: Any pv shim examples ???

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

On Fri, Jul 08, 2022 at 07:17:42PM -0400, Brad Spencer wrote:
> 
> So, I noticed that there is a message in the Xen 4.15.2 package
> mentioning that 32 bit PV guests will need to use pv shim in the future
> as direct support is going away.  I attempted to use that with a very
> old NetBSD 8.x 32 bit PV test guest I have on a NetBSD 9.2 DOM0 and it
> didn't work.  I do not quite understand how pv shim works, but it
> appears to want to start something like another DOM0 and that crashes.
> 
> Just wondering if anyone has had this work for them.

yes, it works for me, with 4.15.2 and 4.15.3. Just add
type=pvh
pvshim=1

to your config file.

Basically pvshim emulates the PV MMU hypercalls in a PVH environnement

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