diff options
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/init_32.c | 3 | ||||
| -rw-r--r-- | arch/x86/mm/init_64.c | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 4d115654519..a72737c0574 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -736,6 +736,8 @@ static int noinline do_test_wp_bit(void) } #ifdef CONFIG_DEBUG_RODATA +const int rodata_test_data = 0xC3; +EXPORT_SYMBOL_GPL(rodata_test_data); void mark_rodata_ro(void) { @@ -765,6 +767,7 @@ void mark_rodata_ro(void) set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT); printk("Write protecting the kernel read-only data: %luk\n", size >> 10); + rodata_test(); #ifdef CONFIG_CPA_DEBUG printk("Testing CPA: undo %lx-%lx\n", start, start + size); diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index f97ace7a55e..50d29f5da02 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -573,6 +573,7 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end) set_memory_rw(begin, (end - begin)/PAGE_SIZE); set_memory_np(begin, (end - begin)/PAGE_SIZE); set_memory_nx(begin, (end - begin)/PAGE_SIZE); + rodata_test(); } #endif } @@ -585,6 +586,8 @@ void free_initmem(void) } #ifdef CONFIG_DEBUG_RODATA +const int rodata_test_data = 0xC3; +EXPORT_SYMBOL_GPL(rodata_test_data); void mark_rodata_ro(void) { |