• ARMv8 Secure EL1 problem

    Hi, arm experts,

    We want to use ARCH32 mode in secure EL1, I see some descriptions in ARMv8 Arch Reference Manual about Secure EL1 ARCH32 mode as follows:

    One is the VBAR(secure), it is mapped to  VBAR_EL3, the other is SCTLR (secure), it is mapped to …

  • 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…