From b1eeab67682a5e397aecf172046b3a8bd4808ae4 Mon Sep 17 00:00:00 2001 From: Vegard Nossum Date: Tue, 25 Nov 2008 16:55:53 +0100 Subject: kmemcheck: add hooks for the page allocator This adds support for tracking the initializedness of memory that was allocated with the page allocator. Highmem requests are not tracked. Cc: Dave Hansen Acked-by: Pekka Enberg [build fix for !CONFIG_KMEMCHECK] Signed-off-by: Ingo Molnar [rebased for mainline inclusion] Signed-off-by: Vegard Nossum --- arch/x86/mm/kmemcheck/shadow.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/x86/mm/kmemcheck') diff --git a/arch/x86/mm/kmemcheck/shadow.c b/arch/x86/mm/kmemcheck/shadow.c index e7346d3873b3..e773b6bd0079 100644 --- a/arch/x86/mm/kmemcheck/shadow.c +++ b/arch/x86/mm/kmemcheck/shadow.c @@ -116,6 +116,14 @@ void kmemcheck_mark_uninitialized_pages(struct page *p, unsigned int n) kmemcheck_mark_uninitialized(page_address(&p[i]), PAGE_SIZE); } +void kmemcheck_mark_initialized_pages(struct page *p, unsigned int n) +{ + unsigned int i; + + for (i = 0; i < n; ++i) + kmemcheck_mark_initialized(page_address(&p[i]), PAGE_SIZE); +} + enum kmemcheck_shadow kmemcheck_shadow_test(void *shadow, unsigned int size) { uint8_t *x; -- cgit v1.2.3