Messages in this thread |  | | | Date | Sun, 30 Sep 2007 13:58:55 +0200 | | From | Nick Piggin <> | | Subject | Re: [rfc][patch] i386: remove comment about barriers |
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On Sat, Sep 29, 2007 at 08:16:47PM -0700, Paul E. McKenney wrote: > On Sat, Sep 29, 2007 at 03:28:48PM +0200, Nick Piggin wrote: > > Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> >
Thanks v much for confirming, everyone.
> > Signed-off-by: Nick Piggin <npiggin@suse.de> > > > > --- > > Index: linux-2.6/include/asm-i386/system.h > > =================================================================== > > --- linux-2.6.orig/include/asm-i386/system.h > > +++ linux-2.6/include/asm-i386/system.h > > @@ -214,11 +214,6 @@ static inline unsigned long get_limit(un > > */ > > > > > > -/* > > - * Actually only lfence would be needed for mb() because all stores done > > - * by the kernel should be already ordered. But keep a full barrier for now. > > - */ > > - > > #define mb() alternative("lock; addl $0,0(%%esp)", "mfence", X86_FEATURE_XMM2) > > #define rmb() alternative("lock; addl $0,0(%%esp)", "lfence", X86_FEATURE_XMM2) > > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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