Setting the PRMRR size

Use this task to set the size of the protected region in the system. If you enabled SGX in Software Controlled mode, the PRMRR size is automatically set to Software Controlled. When Software Controlled is enabled, you can change the region size here or with the driver software.

Prerequisites

Intel Software Guard Extensions (SGX) is enabled.

Procedure
  1. From the System Utilities screen, select System Configuration > BIOS/Platform Configuration (RBSU) > System Options > Processor Options > PRMRR Size and press Enter.
  2. Select a setting and press Enter.
    1. 32 MB
    2. 64 MB
    3. 128 MB
    4. Software Controlled - The size of the PRMRR region is determined by the Intel drivers, which can be configured in the OS.
  3. Press F10.