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

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

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
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