PAGE_S2           102 arch/arm/include/asm/pgtable.h #define PAGE_S2			_MOD_PROT(pgprot_s2, L_PTE_S2_RDONLY | L_PTE_XN)
PAGE_S2            79 arch/arm64/include/asm/pgtable-prot.h #define PAGE_S2			__pgprot(_PROT_DEFAULT | PAGE_S2_MEMATTR(NORMAL) | PTE_S2_RDONLY | PAGE_S2_XN)