From: Ross Tyler <retyler@raytheon.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: how does one disable processor cache on memory allocated with get_free_pages?
Date: Fri, 27 Feb 2004 15:29:19 -0800 [thread overview]
Message-ID: <403FD2CF.3030701@raytheon.com> (raw)
In-Reply-To: <1077921618.23344.40.camel@gaston>
Ben,
Thank you for your response - it is very enlightening.
With this information I think I will be able to make a case not to worry
about the processor cache.
If I win the argument, it will make my life much easier and my code much
cleaner.
Thank you.
Regarding my usage of __pa() ...
My hope was that by allocating memory early enough in the boot process,
I could guarantee that the same physical memory is allocated on every boot.
My experiments have shown that this is the case.
I just use __pa to report this result.
Thanks again!
next prev parent reply other threads:[~2004-02-27 23:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-26 16:25 how does one disable processor cache on memory allocated with get_free_pages? Ross Tyler
2004-02-27 10:51 ` Benjamin Herrenschmidt
2004-02-27 15:36 ` Ross Tyler
2004-02-27 22:40 ` Benjamin Herrenschmidt
2004-02-27 23:29 ` Ross Tyler [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-02-25 23:37 Ross Tyler
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