Re: [PATCH 2/5] Paravirt cpu batching.patch

[Chuck Ebbert]

In-Reply-To: <20061212225430.GC10475@xxxxxxxxxxxxxxxxxxxx>

On Tue, 12 Dec 2006 14:54:30 -0800, Chros Wright wrote:

> > --- a/arch/i386/kernel/process.c    Tue Dec 12 13:50:50 2006 -0800
> > +++ b/arch/i386/kernel/process.c    Tue Dec 12 13:50:53 2006 -0800
> > @@ -665,6 +665,37 @@ struct task_struct fastcall * __switch_t
> >     load_TLS(next, cpu);
> >  
> >     /*
> > +    * Restore IOPL if needed.
> > +    */
> > +   if (unlikely(prev->iopl != next->iopl))
> > +           set_iopl_mask(next->iopl);
>
> Small sidenote that this bit undoes a recent change from Chuck Ebbert, which
> killed iopl_mask update via hypervisor.

This whole thing needs a proper fix IMO.  I posted something a while back
but Andi didn't like it, I guess.

-- 
MBTI: IXTP

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/