From: David Miller <davem@davemloft.net>
To: Eric.Moore@lsi.com
Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: HELP: Is writeq an atomic operation??
Date: Fri, 02 May 2008 15:32:10 -0700 (PDT) [thread overview]
Message-ID: <20080502.153210.122414532.davem@davemloft.net> (raw)
In-Reply-To: <0631C836DBF79F42B5A60C8C8D4E822901047B1D@NAMAIL2.ad.lsil.com>
From: "Moore, Eric" <Eric.Moore@lsi.com>
Date: Fri, 2 May 2008 16:19:49 -0600
> Is a 64bit write to MMIO registers an atomic operation when using the
> writeq API?
The answer to this question this is platform dependent.
On most 64-bit platforms, it is. On some 32-bit ones, it is not.
This is not a SCSI layer question, so belongs minimally on
linux-kernel which I've CC:'d.
next prev parent reply other threads:[~2008-05-02 22:32 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-02 22:19 HELP: Is writeq an atomic operation?? Moore, Eric
2008-05-02 22:32 ` David Miller [this message]
2008-05-02 22:43 ` Roland Dreier
2008-05-02 22:49 ` David Miller
2008-05-02 22:49 ` Moore, Eric
2008-05-02 22:53 ` Roland Dreier
2008-05-02 23:13 ` Moore, Eric
2008-05-02 23:21 ` Roland Dreier
2008-05-02 23:31 ` Moore, Eric
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