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Arm Cortex-A55 Core Technical Reference Manual : MMU responses

MMU responses

When one of the following translations is completed, the MMU generates a response to the requester:

  • An L1 TLB hit.
  • An L2 TLB hit.
  • A translation table walk.

The response from the MMU contains the following information:

  • The PA corresponding to the translation.
  • A set of permissions.
  • Domains information for AArch32 short descriptor format only.
  • Secure or Non-secure.
  • All the information required to report aborts. See the Arm® Architecture Reference Manual Armv8, for Armv8-A architecture profile for more details.