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LGDT         Load Global Descriptor Table (286/386)  Flags: O D I T S Z A P C

LGDT memory location

           Logic:        Global Descriptor Table . [memory location]

    LGDT loads a memory operand into the GDTR register (which specifies
    the address and limit of the Global Descriptor Table). You must
    supply it with the address of a 64-bit memory location.

  --------------------------------------------------------------------------
   Operands                   Clocks   Transfers  Bytes  Example
   LGDT memory                11 (286)    8         5    LGDT MY_DESCRIPTOR
  --------------------------------------------------------------------------

        Note:          This instruction is only available to processes
                       with a privilege level of 0.