Subject: Re: port-xen/30977: FPU troubles
To: None <port-xen-maintainer@netbsd.org, gnats-admin@netbsd.org,>
From: Quentin Garnier <cube@cubidou.net>
List: netbsd-bugs
Date: 12/09/2005 17:50:03
The following reply was made to PR port-xen/30977; it has been noted by GNATS.

From: Quentin Garnier <cube@cubidou.net>
To: Manuel Bouyer <bouyer@antioche.eu.org>
Cc: Paul Ripke <stix@stix.id.au>, gnats-bugs@NetBSD.org,
	port-xen@NetBSD.org
Subject: Re: port-xen/30977: FPU troubles
Date: Fri, 9 Dec 2005 18:45:50 +0100

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 On Wed, Nov 23, 2005 at 01:47:04PM +0100, Manuel Bouyer wrote:
 > On Wed, Nov 23, 2005 at 08:15:04AM +1100, Paul Ripke wrote:
 > > I've finally got around to trying xen (NetBSD-3.0BETA, xen 2.0.7) and
 > > have run into this PR in DOM0.
 > >=20
 > > First sign was xearth coredumping on login. Next was only "clicking"
 > > from xmms, and I've had xpdf core, too.
 > >=20
 > > A little debugging shows that the FPU state is not being correctly
 > > saved or restored during "some" context switches. The following code
 > > appears to exhibit the behaviour reliably:
 [...]
 > Index: i386/machdep.c
 > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
 
 ogg123 is happier with this, but still not perfect.
 
 gkrellm, OTOH, is really not happy with it.
 
 --=20
 Quentin Garnier - cube@cubidou.net - cube@NetBSD.org
 "When I find the controls, I'll go where I like, I'll know where I want
 to be, but maybe for now I'll stay right here on a silent sea."
 KT Tunstall, Silent Sea, Eye to the Telescope, 2004.
 
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