diff options
Diffstat (limited to 'arch/s390/mm/vmem.c')
| -rw-r--r-- | arch/s390/mm/vmem.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c index a1e01542790b..d734058f28d3 100644 --- a/arch/s390/mm/vmem.c +++ b/arch/s390/mm/vmem.c @@ -651,14 +651,10 @@ void vmem_unmap_4k_page(unsigned long addr) void __init vmem_map_init(void) { - set_memory_rox((unsigned long)_stext, - (unsigned long)(_etext - _stext) >> PAGE_SHIFT); - set_memory_ro((unsigned long)_etext, - (unsigned long)(__end_rodata - _etext) >> PAGE_SHIFT); - set_memory_rox((unsigned long)_sinittext, - (unsigned long)(_einittext - _sinittext) >> PAGE_SHIFT); - set_memory_rox((unsigned long)__stext_amode31, - (unsigned long)(__etext_amode31 - __stext_amode31) >> PAGE_SHIFT); + __set_memory_rox(_stext, _etext); + __set_memory_ro(_etext, __end_rodata); + __set_memory_rox(_sinittext, _einittext); + __set_memory_rox(__stext_amode31, __etext_amode31); /* * If the BEAR-enhancement facility is not installed the first * prefix page is used to return to the previous context with @@ -667,8 +663,12 @@ void __init vmem_map_init(void) if (!static_key_enabled(&cpu_has_bear)) set_memory_x(0, 1); if (debug_pagealloc_enabled()) { - set_memory_4k((unsigned long)__va(0), - ident_map_size >> PAGE_SHIFT); + /* + * Use RELOC_HIDE() as long as __va(0) translates to NULL, + * since performing pointer arithmetic on a NULL pointer + * has undefined behavior and generates compiler warnings. + */ + __set_memory_4k(__va(0), RELOC_HIDE(__va(0), ident_map_size)); } if (MACHINE_HAS_NX) ctl_set_bit(0, 20); |