AMTU(8)                   Linux System Administration                  AMTU(8)

       amtu - Abstract Machine Test Utility (AMTU)

       amtu [-dmsinph]

       Abstract Machine Test Utility (AMTU) is an administrative utility that
       checks whether the underlying protection mechanisms of the hardware are
       being enforced.  These checks are a requirement of the Controlled
       Access Protection Profile (CAPP) FPT_AMT.1 (see

       AMTU executes the following tests:

       * Memory
              Randomly writes to areas of memory, then reads the memory back
              to ensure the values written remain unchanged.

       * Memory Separation
              Ensures that user space programs cannot read and write to areas
              of memory utilized by items such as Video RAM and kernel code.

       * I/O Controller - Network
              Verifies random data transmitted is also the data received for
              each configured network device.  Checks only Ethernet and token
              ring devices that are configured and up.  Does not check async

       * I/O Controller - Disk
              Verifies random data written to disks remains unchanged.  Only
              IDE and SCI controllers that are associated with mounted file
              systems are checked.  Disk controllers with read-only mounted
              file systems are not checked.

       * Supervisor Mode Instructions
              Ensures that the enforcement of the property that privileged
              instructions should only be in supervisor mode is still in
              effect.  The set of privileged instructions tested to confirm
              this is architecture dependent.

       Options available for the amtu command are the following:

       -d     Print debug messages.

       -m     Execute Memory Test.

       -s     Execute Memory Separation Test.

       -i     Execute I/O Controller - Disk Test.

       -n     Execute I/O Controller - Network Test

       -p     Execute Supervisor Mode Instructions Test.

       -h     Print help message.

       The amtu command issues the following return codes when executed:

       -1     Failure

       0      Success.

       Report bugs to

       Emily Ratliff, Joy Latten, and Kimberly Simon.

Linux 2.4                         2003-08-25                           AMTU(8)