See: "http://linuxtoday.com/it_management/2003060600326NWHESV";
"At first glance, Linux and the IBM mainframe are an odd couple. The
teenage operating system and senior citizen computer are worlds apart in
their origins and pricing philosophies, among other things. Yet they do
make a good team, according to Maria Eisenhaendler and Ingolf Salm,
co-authors of the new Prentice Hall book Linux on the Mainframe...
"Why does Linux run well on a mainframe?
"Eisenhaendler: There are two main reasons why Linux runs on the IBM
mainframes so well.
"First, Linux is largely independent of the computer architecture on
which it runs. The small amount of architecture-dependent Linux code is in
well-defined locations in the Linux source tree. For Linux, the mainframe
is just another supported architecture..."
