From mboxrd@z Thu Jan  1 00:00:00 1970
From: babisel10@gmail.com (Babis Chalios)
Date: Wed, 7 Sep 2016 21:52:15 +0100
Subject: Fwd: Kernel information about organization of DRAM
In-Reply-To: <101f51a9-ce96-afd2-352e-349804f82916@qub.ac.uk>
References: <101f51a9-ce96-afd2-352e-349804f82916@qub.ac.uk>
Message-ID: <1240b001-98ab-fe83-f251-0b257b52553f@gmail.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

Hello,

I m trying to find out whether the kernel represents somehow the
organization of the main memory in finer granularity than memory nodes,
e.g. DIMMS, DRAM devices, etc.
I understand that information about physical memory in architectures
like ARM64 might be provided as part of the DTS and overriden by the
bootloader but I couldn't find if/how that level of information is kept
in the kernel after booting.

Also, I took a look in the code related to memory hotplugging, assuming
that there would be some information there regarding whether a DIMM is
online or offline, but this didn't help either.

Any directions on where to look?

Babis