aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86_64/mm/init.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86_64/mm/init.c')
-rw-r--r--arch/x86_64/mm/init.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86_64/mm/init.c b/arch/x86_64/mm/init.c
index 51fbf3eddf13..95bd232ff0cf 100644
--- a/arch/x86_64/mm/init.c
+++ b/arch/x86_64/mm/init.c
@@ -23,6 +23,7 @@
23#include <linux/bootmem.h> 23#include <linux/bootmem.h>
24#include <linux/proc_fs.h> 24#include <linux/proc_fs.h>
25#include <linux/pci.h> 25#include <linux/pci.h>
26#include <linux/poison.h>
26#include <linux/dma-mapping.h> 27#include <linux/dma-mapping.h>
27#include <linux/module.h> 28#include <linux/module.h>
28#include <linux/memory_hotplug.h> 29#include <linux/memory_hotplug.h>
@@ -660,7 +661,8 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
660 for (addr = begin; addr < end; addr += PAGE_SIZE) { 661 for (addr = begin; addr < end; addr += PAGE_SIZE) {
661 ClearPageReserved(virt_to_page(addr)); 662 ClearPageReserved(virt_to_page(addr));
662 init_page_count(virt_to_page(addr)); 663 init_page_count(virt_to_page(addr));
663 memset((void *)(addr & ~(PAGE_SIZE-1)), 0xcc, PAGE_SIZE); 664 memset((void *)(addr & ~(PAGE_SIZE-1)),
665 POISON_FREE_INITMEM, PAGE_SIZE);
664 free_page(addr); 666 free_page(addr);
665 totalram_pages++; 667 totalram_pages++;
666 } 668 }
@@ -668,7 +670,8 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
668 670
669void free_initmem(void) 671void free_initmem(void)
670{ 672{
671 memset(__initdata_begin, 0xba, __initdata_end - __initdata_begin); 673 memset(__initdata_begin, POISON_FREE_INITDATA,
674 __initdata_end - __initdata_begin);
672 free_init_pages("unused kernel memory", 675 free_init_pages("unused kernel memory",
673 (unsigned long)(&__init_begin), 676 (unsigned long)(&__init_begin),
674 (unsigned long)(&__init_end)); 677 (unsigned long)(&__init_end));