Clear the computer's memory?

[Mike Kenny]

What happens if at the time I hibernate I have virtually all of the swap used?

In theory the kernel must save all of my swap (already done), which is
probably only data as it makes no sense to write executable memory to
swap (assuming that when we speak of swap we are really talking about
paging and not the results of trashing), plus whatever data/state/etc.
is in real memory and registers. There is no reason to assume that the
combination could not exceed the size of swap, is there?

On 3/30/06, Gabriel Jägenstedt <gabriel.j at telia.com> wrote:
>
>
> Vincent Trouilliez wrote:
>
> That being said, hopefully the mechanism will be improve/sophisticated,
> > to overcome this problem. Maybe do something like my original
> > assumption: use any partition with enough space, dump the contents of
> > the RAM, and reload it back into RAM in the exact same state that it was
> > before hibernating.
>
> Writing RAM to any available device is foolish. Some of us go to lengths
>  to have secure systems. This includes encrypted swap. There is a lot of
> secure stuff that use swap to store encryption keys and whatnot. Hence
> keep RAM off ordinary disks.
>
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