I wondered about that too. From Documentation/cris:
What is CRIS ?
CRIS is an acronym for 'Code Reduced Instruction Set'. It is the CPU
architecture in Axis Communication AB's range of embeddedn etwork
CPU's, called ETRAX. The latest CPU is called
ETRAX 100LX, where LX stands for 'Linux' because the chip was designed
to be a good host for the Linux operating system.
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