• Correct usage of the NSTable bit in aarch64/armv7a LPAE
    I'm porting our armv7a-short descriptor OS to LPAE and aarch64. In the short descriptor MMU, the "NS" bit can only be found in the first level of the MMU (I'll call it the SECTION level), meaning that...
  • Correct usage of the NSTable bit in aarch64/armv7a LPAE
    I'm porting our armv7a-short descriptor OS to LPAE and aarch64. In the short descriptor MMU, the "NS" bit can only be found in the first level of the MMU (I'll call it the SECTION level), meaning that...
  • Page tables using LPAE
    I have a 32 bit RTOS that currently can access 32 bit physical address and I want to be able to access up to 36 bit physical address. I made the changes but cannot get it to work even though I am still...
  • armv7a/armv8 : Undefined Abort Exception and MMU
    Hi ! When MMU is enabled, and a undefined abort exception is triggered, are we sure that the address stored in the `lr` / `elr_elx` registers is actually mapped by the MMU, or should I check that before...
  • armv7a/armv8 : Undefined Abort Exception and MMU
    Hi ! When MMU is enabled, and a undefined abort exception is triggered, are we sure that the address stored in the `lr` / `elr_elx` registers is actually mapped by the MMU, or should I check that before...