From: Andi Kleen <ak@suse.de>
To: Kanoj Sarcar <kanojsarcar@yahoo.com>
Cc: William Lee Irwin III <wli@holomorphy.com>, linux-mm@kvack.org
Subject: Re: smp_rmb in mm/memory.c in 2.6.10
Date: Thu, 13 Jan 2005 22:06:25 +0100 [thread overview]
Message-ID: <20050113210624.GG20738@wotan.suse.de> (raw)
In-Reply-To: <20050113210210.51593.qmail@web14323.mail.yahoo.com>
> In include/asm-i386/spinlock.h, spin_unlock_string has
> a "xchgb" (in case its required). That should be
> enough of a barrier for the hardware, no?
It is, but only for broken PPros or OOSTORE system
(currently only VIA C3). For kernels compiled for non broken CPUs
there isn't any kind of barrier.
-Andi
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next prev parent reply other threads:[~2005-01-13 21:06 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-13 20:26 Kanoj Sarcar
2005-01-13 20:39 ` William Lee Irwin III
2005-01-13 21:02 ` Kanoj Sarcar
2005-01-13 21:06 ` Andi Kleen [this message]
2005-01-13 21:29 ` Kanoj Sarcar
2005-01-13 21:59 ` Anton Blanchard
2005-01-13 23:22 ` Kanoj Sarcar
2005-01-14 20:37 ` Hugh Dickins
2005-01-14 21:14 ` Kanoj Sarcar
2005-01-14 21:38 ` Andrea Arcangeli
2005-01-14 22:09 ` Hugh Dickins
2005-01-14 22:34 ` Andrea Arcangeli
2005-01-14 21:25 ` Andrea Arcangeli
2005-01-14 21:32 ` Andrea Arcangeli
2005-01-14 22:22 ` Kanoj Sarcar
2005-01-14 22:47 ` Hugh Dickins
2005-01-14 22:51 ` Andrea Arcangeli
2005-01-14 23:14 ` Kanoj Sarcar
2005-01-14 23:26 ` Andrea Arcangeli
2005-01-14 22:36 ` Hugh Dickins
2005-01-14 23:01 ` Andrea Arcangeli
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