Re: marching through all physical memory in software

From: Pavel Machek
Date: Fri Jan 30 2009 - 04:13:28 EST

> Hi.
> On Wed, 2009-01-28 at 20:38 +0100, Pavel Machek wrote:
> > You can do the scrubbing today by echo reboot > /sys/power/disk; echo
> > disk > /sys/power/state :-)... or using uswsusp APIs.
> That won't work. The RAM retains it's contents across a reboot, and even
> for a little while after powering off.

Yes, and the original goal was to rewrite all the memory with same
contents so that parity errors don't accumulate. SO scrubbing here !=
trying to clear it.

(cesky, pictures)
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