Stratix® 10 Hard Processor System Technical Reference Manual

ID 683222
Date 8/15/2024
Public
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.