Re: port-xen/53965: XEN DomU fails to poweroff in new HEAD kernels

[Robert Elz <kre%munnari.OZ.AU@localhost>]

The following reply was made to PR port-xen/53965; it has been noted by GNATS.

From: Robert Elz <kre%munnari.OZ.AU@localhost>
To: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
Cc: gnats-bugs%NetBSD.org@localhost, port-xen-maintainer%netbsd.org@localhost,
        gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: port-xen/53965: XEN DomU fails to poweroff in new HEAD kernels
Date: Sun, 10 Feb 2019 03:30:37 +0700

     Date:        Sat, 9 Feb 2019 19:15:17 +0100
     From:        Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     Message-ID:  <20190209181517.GB3869%antioche.eu.org@localhost>
 
   | From the commit log you should be able to add
   | options         __XEN_INTERFACE_VERSION__=0x00030201 # Xen 3.1 interface
   |
   | to get the old API/ABI
 
 Tried that (using sources as they are on HEAD) - I still need to
 check to verify that everything was recompiled, but from whatching it
 fly past, it certainly looked to be, with the -D for that option
 included everywhere.
 
 It didn't change anything, the poweroff still did not happen.  After
 checking that the build was correct, I'll try using (kernel) sources
 from just before the rlevant checkin to verify that it worked immediately 
 before, and then see if I can see what particular code change is affecting
 things.
 
 Whatever happens, backwards compat is important, we need to find a way
 for a standard GENERIC XEN kernel to run (fully, including shutting down)
 on whatever version of XEN it happens to find itself booted on.
 
 kre