Commit bbc7ad20 authored by Committed by ROOLBrowse files
Make supervisor stack inaccessible to user mode
Previously the supervisor stack was read-only in user mode, but since the supervisor stack is typically empty when the CPU is in user mode, it's questionable whether any software actually makes use of this facility. To simplify support for the long descriptor page table format (which doesn't support the user-RO + privileged-RW access mode), let's try and remove usermode SVC stack access completely. Tested on Raspberry Pi 4 Version 6.48. Tagged as 'Kernel-6_48'
Showing with 12 additions and 12 deletions