Re: kern/58118: NetBSD/i386 Xen PV guest panic "fpudna from userland"

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

The following reply was made to PR kern/58118; it has been noted by GNATS.

From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/58118: NetBSD/i386 Xen PV guest panic "fpudna from userland"
Date: Fri, 5 Apr 2024 22:43:46 +0200

 On Fri, Apr 05, 2024 at 05:30:01PM +0000, brad%anduin.eldar.org@localhost wrote:
 > >Number:         58118
 > >Category:       kern
 > >Synopsis:       NetBSD/i386 Xen PV guest panic "fpudna from userland"
 
 FWIW I've seen this from time to time running anita tests:
 http://largo.lip6.fr/~bouyer/NetBSD-tests/xen/
 
 I'm seeing FPU issues for PVH and HVM guests too, and for both i386 and amd64.
 
 This happens since the lazy FPU context switching has been removed.
 
 I tried to track it down but failed. The issue may be in Xen itself.
 
 I just upgraded the test box to Xen 4.18, maybe this will help ...
 
 -- 
 Manuel Bouyer <bouyer%antioche.eu.org@localhost>
      NetBSD: 26 ans d'experience feront toujours la difference
 --