From: Andi Kleen <ak@suse.de>
To: linux-ia64@vger.kernel.org
Subject: Re: NS83820 2.6.0-test5 driver seems unstable on IA64
Date: Fri, 19 Sep 2003 04:43:15 +0000 [thread overview]
Message-ID: <marc-linux-ia64-106394670602546@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-106394503001622@msgid-missing>
On Thu, Sep 18, 2003 at 09:38:47PM -0700, Grant Grundler wrote:
> On Fri, Sep 19, 2003 at 02:16:29PM +1000, Peter Chubb wrote:
> > The obvious approach of realigning the SKB by 2 bytes seems not to
> > work.
>
> Could you be more detailed about the "obvious approach"?
> ie show the diff of what you changed.
>
> Several other NIC driver "alias" (as davidm describes it) the buffer
> by reserving two bytes at the beginning of the recieve buffer
> where header and payload data are DMAd on inbound traffic.
It is a mixed blessing, because the result is a non cache line
aligned buffer. Some NIC chipsets don't like this because they have
to do a read-modify-write cycle for the first cache line and cannot
burst the full packet.
-Andi
next prev parent reply other threads:[~2003-09-19 4:43 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-19 4:16 NS83820 2.6.0-test5 driver seems unstable on IA64 Peter Chubb
2003-09-19 4:38 ` Grant Grundler
2003-09-19 4:43 ` Andi Kleen [this message]
2003-09-19 5:01 ` Peter Chubb
2003-09-19 5:04 ` Grant Grundler
2003-09-19 5:11 ` Peter Chubb
2003-09-19 5:53 ` Andi Kleen
2003-09-19 10:49 ` Benjamin LaHaise
2003-09-23 0:34 ` Peter Chubb
2003-09-23 0:36 ` Benjamin LaHaise
2003-09-23 6:22 ` David S. Miller
2003-09-23 10:40 ` Peter Chubb
2003-09-23 10:51 ` David S. Miller
2003-09-23 14:59 ` David Mosberger
2003-09-23 17:27 ` David S. Miller
2003-09-23 17:56 ` David Mosberger
2003-09-23 17:56 ` David Mosberger
2003-09-23 17:57 ` David S. Miller
2003-09-23 17:58 ` Van Maren, Kevin
2003-09-23 18:06 ` David Mosberger
2003-09-23 18:21 ` Luck, Tony
2003-09-23 18:27 ` David Mosberger
2003-09-23 18:29 ` Benjamin LaHaise
2003-09-23 18:45 ` David S. Miller
2003-09-23 18:47 ` David S. Miller
2003-09-23 18:51 ` Grant Grundler
2003-09-23 18:51 ` David S. Miller
2003-09-23 18:52 ` David S. Miller
2003-09-23 18:54 ` Andreas Schwab
2003-09-23 19:01 ` David S. Miller
2003-09-23 19:04 ` Benjamin LaHaise
2003-09-23 19:08 ` David S. Miller
2003-09-23 19:09 ` Andreas Schwab
2003-09-23 19:10 ` Jeff Garzik
2003-09-23 19:10 ` David S. Miller
2003-09-23 19:11 ` David S. Miller
2003-09-23 19:11 ` Benjamin LaHaise
2003-09-23 19:16 ` Andreas Schwab
2003-09-23 19:17 ` David Mosberger
2003-09-23 19:22 ` David S. Miller
2003-09-23 19:22 ` Jeff Garzik
2003-09-23 19:28 ` Matthew Wilcox
2003-09-23 20:00 ` David Mosberger
2003-09-23 20:00 ` David Mosberger
2003-09-23 20:38 ` Grant Grundler
2003-09-23 20:45 ` David S. Miller
2003-09-23 21:00 ` Alan Cox
2003-09-23 21:16 ` David Mosberger
2003-09-23 22:35 ` Grant Grundler
2003-09-23 22:58 ` Luck, Tony
2003-09-23 23:04 ` Ian Wienand
2003-09-23 23:15 ` Andrew Morton
2003-09-23 23:32 ` David S. Miller
2003-09-23 23:35 ` David S. Miller
2003-09-23 23:35 ` David S. Miller
2003-09-23 23:37 ` David S. Miller
2003-09-24 0:04 ` David S. Miller
2003-09-24 0:06 ` David S. Miller
2003-09-24 0:13 ` Grant Grundler
2003-09-24 0:14 ` Matthew Wilcox
2003-09-24 1:47 ` David S. Miller
2003-09-24 1:58 ` William Lee Irwin III
2003-09-24 2:55 ` David S. Miller
2003-09-24 3:08 ` David S. Miller
2003-09-24 5:18 ` Valdis.Kletnieks
2003-09-25 16:11 ` Ivan Kokshaysky
2003-09-26 1:12 ` David S. Miller
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