No real functional change except how the smaller ARCH_DEFAULT_PAGE_SIZE is now computed and set in defines.h instead of rules.mk for arch/arm to be consistent with the other arch that has a large/small build (riscv).
No real functional change except how the smaller ARCH_DEFAULT_PAGE_SIZE is now computed and set in defines.h instead of rules.mk for arch/arm to be consistent with the other arch that has a large/small build (riscv).