diff options
Diffstat (limited to 'arch/x86/mm/init.c')
| -rw-r--r-- | arch/x86/mm/init.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index 1bba16c5742b..6005f83b8111 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -71,6 +71,12 @@ uint8_t __pte2cachemode_tbl[8] = { }; EXPORT_SYMBOL(__pte2cachemode_tbl); +/* Check that the write-protect PAT entry is set for write-protect */ +bool x86_has_pat_wp(void) +{ + return __pte2cachemode_tbl[_PAGE_CACHE_MODE_WP] == _PAGE_CACHE_MODE_WP; +} + static unsigned long __initdata pgt_buf_start; static unsigned long __initdata pgt_buf_end; static unsigned long __initdata pgt_buf_top; |