Re: [patch 17/24] Xen-paravirt_ops: avoid having a bad selector in %gs during context switch

From: Andi Kleen
Date: Wed Feb 21 2007 - 17:10:42 EST

> /*
> + * 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?

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