diff options
| -rw-r--r-- | arch/x86/mm/init_32.c | 7 | ||||
| -rw-r--r-- | arch/x86/mm/init_64.c | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 0d3369b900e..4d115654519 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -780,6 +780,13 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end) { unsigned long addr; + /* + * We just marked the kernel text read only above, now that + * we are going to free part of that, we need to make that + * writeable first. + */ + set_memory_rw(begin, (end - begin) >> PAGE_SHIFT); + for (addr = begin; addr < end; addr += PAGE_SIZE) { ClearPageReserved(virt_to_page(addr)); init_page_count(virt_to_page(addr)); diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 9b69fa54a83..f97ace7a55e 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -570,6 +570,7 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end) * 2Mb kernel mapping just for this debug feature. */ if (begin >= __START_KERNEL_map) { + set_memory_rw(begin, (end - begin)/PAGE_SIZE); set_memory_np(begin, (end - begin)/PAGE_SIZE); set_memory_nx(begin, (end - begin)/PAGE_SIZE); } |