memcontrol(8)

NAME

memcontrol list [-a]
memcontrol set -b base -l length -o owner attribute
memcontrol clear -o owner
memcontrol clear -b base -l length

A number of supported system architectures allow the be
haviour of the CPU cache to be programmed to behave differently depending on
the region being written.
The memcontrol utility provides an interface to this facili
ty, allowing CPU cache behavior to be altered for ranges of system physi
cal memory.
These ranges are typically power-of-2 aligned and sized,
however the specific rules governing their layout vary between architec
tures. The
memcontrol utility does not attempt to enforce these rules,
however the system will reject any attempt to set an illegal combina
tion.
list List range slots.: -a List all range slots, even those that are; inactive.
set Set memory range attributes.: -b base
Memory range base address.
-l length: Length of memory range in bytes, power of; 2.
-o owner: Text identifier for this setting (7 char; max).
attribute: Attributes applied to this range; combi; nations of
force, uncacheable, write-combine,; write-through,
write-back, and write-protect.
clear Clear memory range attributes. Ranges may be
cleared by owner: or by base/length combination.; To clear based on ownership:; -o owner
All ranges with this owner will be

cleared.
To clear based on the base/length combination:
-b base: Memory range base address.
-l length: Length of memory range in bytes, power of; 2.
Base and length must exactly match an existing
range.