Intel® Stratix® 10 Hard Processor System Technical Reference Manual

ID 683222
Date 11/28/2022
Public

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents

3.5.1. Exception Levels

The Cortex® -A53 MPCore™ CPUs support 4 exception levels:
  • EL0 has the lowest software execution privilege, and execution in EL0 is called unprivileged execution. This execution level may be used for application software.
  • EL1 provides support for operating systems.
  • EL2 provides support for processor virtualization or hypervisor mode.
  • EL3 provides support for the secure monitor.
As the exception level increases from 1 to 3, the software execution privilege increases.