linux-kernel - Re: marching through all physical memory in software

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Message-ID: <4989C6A8.5050906@mvista.com>
Date:	Wed, 04 Feb 2009 09:47:36 -0700
From:	Dave Jiang <djiang@...sta.com>
To:	Pavel Machek <pavel@...e.cz>
Cc:	Chris Friesen <cfriesen@...tel.com>, ncunningham-lkml@...a.org.au,
	Valdis.Kletnieks@...edu, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, "Eric W. Biederman" <ebiederm@...ssion.com>,
	Doug Thompson <norsk5@...oo.com>,
	bluesmoke-devel@...ts.sourceforge.net,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: marching through all physical memory in software

There may be generic code, but the actual scrubbing can be architecture 
specific. You have to atomically read and write back. And each arch has 
different way of handling that. See arch/X/include/asm/edac.h

Pavel Machek wrote:
> Software memory scrub would no longer be a "driver" :-). So it should
> go into kernel/scrub or mm/scrub or maybe mm/edac or something.
> 
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