From: Andi Kleen <ak@suse.de>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Jesse Barnes <jesse.barnes@intel.com>,
linux-kernel@vger.kernel.org
Subject: Re: Intel Memory Ordering White Paper
Date: Sat, 8 Sep 2007 12:19:43 +0200 [thread overview]
Message-ID: <200709081219.43662.ak@suse.de> (raw)
In-Reply-To: <200709080557.36021.nickpiggin@yahoo.com.au>
On Friday 07 September 2007 21:57:35 Nick Piggin wrote:
>
> > > Anyway, the lfence should be able to go away without so much trouble.
> >
> > You mean sfence? lfence in rmb is definitely needed.
>
> I mean lfence in smp_rmb().
One point of rmb is to stop speculative loads and I don't think we
can get that without lfence.
-Andi
next prev parent reply other threads:[~2007-09-08 10:19 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-07 22:26 Intel Memory Ordering White Paper Jesse Barnes
2007-09-08 8:54 ` Nick Piggin
2007-09-07 23:20 ` Linus Torvalds
2007-09-08 17:34 ` Nick Piggin
2007-09-08 17:48 ` Nick Piggin
2007-09-07 18:13 ` Nick Piggin
2007-09-08 8:53 ` Andi Kleen
2007-09-07 19:57 ` Nick Piggin
2007-09-08 10:19 ` Andi Kleen [this message]
2007-09-07 20:32 ` Nick Piggin
2007-09-08 20:37 ` H. Peter Anvin
2007-09-08 11:34 ` dean gaudet
2007-09-08 12:08 ` Petr Vandrovec
2007-09-08 12:27 ` dean gaudet
2007-09-08 10:30 ` Alan Cox
2007-09-07 20:46 ` Nick Piggin
2007-09-08 10:29 ` Alan Cox
2007-09-07 20:49 ` Nick Piggin
2007-09-08 14:11 ` Alan Cox
2007-09-12 18:26 ` Dr. David Alan Gilbert
2007-09-19 16:26 ` Jesse Barnes
2007-09-19 17:29 ` Andi Kleen
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