init_pfn 56 arch/s390/kernel/early.c unsigned long end_pfn, init_pfn; init_pfn 60 arch/s390/kernel/early.c for (init_pfn = 0 ; init_pfn < end_pfn; init_pfn++) init_pfn 61 arch/s390/kernel/early.c page_set_storage_key(init_pfn << PAGE_SHIFT,