From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <ak@suse.de>
Subject: Re: [patch 17/24] Xen-paravirt_ops: avoid having a bad
	selector in %gs during context switch
Date: Wed, 21 Feb 2007 23:10:02 +0100
Message-ID: <200702212310.02218.ak@suse.de>
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	<20070221205323.770169136@goop.org>
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Cc: Chris Wright <chrisw@sous-sol.org>, Jeremy Fitzhardinge <jeremy@goop.org>, xen-devel@lists.xensource.com, Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org
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>  	/*
> +	 * Temporary hack: zero gs now that we've saved it so that Xen
> +	 * doesn't try to reload the old value after changing the GDT
> +	 * during the context switch.  This can go away once Xen has
> +	 * been taught to only reload %gs when it absolutely must.
> +	 */
> +	loadsegment(gs, 0);

Sorry, but i don't really want that unconditionally in the context switch.
Adding a paravirt ops for it would be also ugly. Can Xen be fixed?

-Andi