• Permission fault, level 2 on MMU enable

    Hi ARM folks, hoping someone can show me where I'm going wrong programming the MMU. The ESR_EL1 reports that it is a Permission fault, level 2. Here's what I'm trying to accomplish:

    4GiB space, 4kiB granule flat identity mapped, divided like…

  • In Arm v7 mmu, stage2 translation cannot use short descriptors. WHY?

    ARM V7 document states: "In ARMv7-A short descriptors only be used at EL0 and EL1 stage 1 translations. They cannot, therefore, be used by hypervisors or Secure monitor code."

    Why stage2/hypervisors/secure monitor cannot use short descriptors…