pte_z 248 arch/s390/mm/kasan_init.c pte_t pte_z; pte_z 256 arch/s390/mm/kasan_init.c pte_z = __pte(__pa(kasan_early_shadow_page) | pgt_prot); pte_z 293 arch/s390/mm/kasan_init.c memset64((u64 *)kasan_early_shadow_pte, pte_val(pte_z), PTRS_PER_PTE);