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+What: /sys/devices/system/memory
+Date: June 2008
+Contact: Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+ The /sys/devices/system/memory contains a snapshot of the
+ internal state of the kernel memory blocks. Files could be
+ added or removed dynamically to represent hot-add/remove
+ operations.
+
+Users: hotplug memory add/remove tools
+ https://w3.opensource.ibm.com/projects/powerpc-utils/
+
+What: /sys/devices/system/memory/memoryX/removable
+Date: June 2008
+Contact: Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+ The file /sys/devices/system/memory/memoryX/removable
+ indicates whether this memory block is removable or not.
+ This is useful for a user-level agent to determine
+ identify removable sections of the memory before attempting
+ potentially expensive hot-remove memory operation
+
+Users: hotplug memory remove tools
+ https://w3.opensource.ibm.com/projects/powerpc-utils/