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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!


  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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