From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: Re: 2.6.28.7 domU: 32-bit emulation seems to be broken
Date: Tue, 17 Mar 2009 14:14:37 -0700
Message-ID: <49C012BD.4020509@goop.org>
References: <gpe0vg$j67$1@ger.gmane.org>	<gpei6e$gcn$1@ger.gmane.org>	<49BAFC72.4040501@goop.org>	<49BB0184.1020503@goop.org>
	<49BB6F4A.90000@gmail.com>	<49BC2994.6040404@goop.org>
	<49BCF38B.3000507@gmail.com>	<49BD2CCA.6070308@goop.org>
	<49BD3A87.3060403@gmail.com> <49BEB487.3090503@goop.org>
	<49BEB526.7060608@goop.org> <49BED2DE.7060203@gmail.com>
	<49BED46C.2040906@goop.org> <49BFAEFA.80605@gmail.com>
	<49BFD56B.1040003@goop.org> <49C0089A.3060706@gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Content-Transfer-Encoding: quoted-printable
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <49C0089A.3060706@gmail.com>
List-Unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: =?ISO-8859-15?Q?Sven_K=F6hler?= <sven.koehler@gmail.com>
Cc: xen-devel@lists.xensource.com, xen-users@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org

Sven K=F6hler wrote:
> Jeremy Fitzhardinge schrieb:
>> OK, that confirms that its sysret32 that's failing.  vdso32=3D0 on the=
=20
>> kernel command line should be the workaround until we've got a proper=20
>> fix.
>
> vdso32=3D0 works. Thank you for your help!
>
> But i wonder: what's the drawback of this workaround? Performance=20
> loss? Or something more dramatic?=20

Slight performance loss, probably only measurable with micro-benchmarks.

    J