From: Chris Friesen <cfriesen@nortelnetworks.com>
To: Linux kernel <linux-kernel@vger.kernel.org>, benh@kernel.crashing.org
Subject: problem with cache flush routine for G5?
Date: Thu, 04 Mar 2004 16:06:24 -0500 [thread overview]
Message-ID: <40479A50.9090605@nortelnetworks.com> (raw)
We're running into issues with the "flush_data_cache" routine on the G5.
For the G5, the L1 dcache is 32K and the L2 cache is 512K. At 128
bytes/cacheline, that's 256 and 4096 cachelines, respectively.
In the existing tree, NUM_CACHE_LINES is set to 128*8, or 1024. Is this
an oversight or am I missing something?
Also, I'm curious why the dcbf instruction is not used for this.
Chris
--
Chris Friesen | MailStop: 043/33/F10
Nortel Networks | work: (613) 765-0557
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next reply other threads:[~2004-03-04 21:06 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-04 21:06 Chris Friesen [this message]
2004-03-04 23:51 ` problem with cache flush routine for G5? Benjamin Herrenschmidt
2004-03-04 23:57 ` Tom Rini
2004-03-05 0:04 ` Benjamin Herrenschmidt
2004-03-05 0:44 ` Chris Friesen
2004-03-05 15:15 ` Tom Rini
2004-03-05 23:51 ` Benjamin Herrenschmidt
2004-03-05 0:37 ` Chris Friesen
2004-03-05 2:10 ` Benjamin Herrenschmidt
2004-03-05 5:39 ` Chris Friesen
2004-03-05 5:46 ` Benjamin Herrenschmidt
2004-03-05 17:21 ` Chris Friesen
2004-03-05 23:53 ` Benjamin Herrenschmidt
2004-03-06 1:34 ` Segher Boessenkool
2004-03-06 2:31 ` Anton Blanchard
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