• Reason Behind EL2 in non-secured state ARMv8
    Hi Experts, What is the reason behind allowing EL2 only in non-secured state in ARMv8 ? Regards, Techguyz
  • EL1 behavior when MMU is off
    Hi, I am facing issues with EL1 Guest OS.  I have enabled EL2 stage 2 page tables and set up all the virtualization registers {HCR_EL2, VTCR_EL2 and VTTBR_EL2 etc.} I am mapping my Guest OS memory to...
  • How to do from Secure(EL3) to Non-secure Exception level transition in ARMV8-A ?
    Hi all i trying do transition from EL3 to EL2 exception ,but after ERET of EL3 mode it change the mode to EL2 , but as soon as when it will execute first instruction of EL2 , then It goes to Exception...
  • how to understand ARMv8 exception level1 secure/non-secure MMU?
    Hi Experts ,      ARMv8 MMU TTBRn_ELx registers are banked by exception level.      In "DDI0487A_b_armv8_arm.pdf" page 1640, the controlling register of secure EL1&0 stage1 is TTBR0_EL1      and Non-secure...
  • How to deice debug target exception level of watchpoint on ARMv8 architecture
    Hello, everyone I'm new to this community. I'd like to ask many questions and want to help someone. Now I have some difficulties in understanding aarch64's watchpoint exception handling scheme. I found...