On 01/25/2016 10:39 PM, Jianyu Zhan wrote:
On Tue, Jan 26, 2016 at 12:55 AM, Laura Abbott
wrote:
--- a/mm/debug-pagealloc.c
+++ b/mm/debug-pagealloc.c
@@ -8,11 +8,5 @@
void __kernel_map_pages(struct page *page, int numpages, int enable)
{
- if (!page_poisoning_enabled())
-
On Tue, Jan 26, 2016 at 12:55 AM, Laura Abbott
wrote:
> --- a/mm/debug-pagealloc.c
> +++ b/mm/debug-pagealloc.c
> @@ -8,11 +8,5 @@
>
> void __kernel_map_pages(struct page *page, int numpages, int enable)
> {
> - if (!page_poisoning_enabled())
> - return;
> -
> - if (ena
Page poisoning is currently setup as a feature if architectures don't
have architecture debug page_alloc to allow unmapping of pages. It has
uses apart from that though. Clearing of the pages on free provides
an increase in security as it helps to limit the risk of information
leaks. Allow page po
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