kern.log puzzle

[Craig Dickson <crdic@yahoo.com>]

Does anyone know what the following entries from kern.log mean? They
seem to pop up just after reboots. I'm not sure if this indicates a
hardware problem, or just the kernel checking to see how much memory is
installed, or something else entirely. Is it anything to be concerned
about?

The machine seems to be working fine. In case it might help with the
interpretation of these messages, the box is a 700 MHz Coppermine
Celeron (i.e. a Pentium III with half of the L2 cache disabled) on an
i810 motherboard, with 384 MiB RAM, running kernel 2.4.12-ac3.

--- begin excerpt ---
Dec  9 21:29:53 linux700 kernel: memory : d6dffca0
Dec  9 21:29:53 linux700 kernel: memory : d6dffce0
Dec  9 21:29:53 linux700 kernel: memory : d6dffd20
Dec  9 21:29:57 linux700 kernel: memory : d6dffca0
Dec  9 21:29:57 linux700 kernel: memory : d6dffce0
Dec  9 21:29:57 linux700 kernel: memory : d6dffd20
Dec  9 21:30:04 linux700 kernel: memory : d6dffce0
Dec  9 21:30:04 linux700 kernel: memory : d6dffd20
Dec  9 21:30:04 linux700 kernel: memory : d6dff8e0
Dec  9 21:30:10 linux700 kernel: memory : d6dffd20
Dec  9 21:30:10 linux700 kernel: memory : d6dff8e0
Dec  9 21:30:10 linux700 kernel: memory : d6dffca0
Dec  9 21:34:20 linux700 kernel: memory : d6dffd20
Dec  9 21:34:20 linux700 kernel: memory : d6dffca0
Dec  9 21:34:20 linux700 kernel: memory : d6dffce0
--- end excerpt ---

Thanks,

Craig