x86: add periodic corruption check
Perodically check for corruption in low phusical memory. Don't bother
checking at fault time, since it won't show anything useful.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 5140bdf..455f3fe 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -848,8 +848,6 @@
* Oops. The kernel tried to access some bad page. We'll have to
* terminate things with extreme prejudice.
*/
- check_for_bios_corruption();
-
#ifdef CONFIG_X86_32
bust_spinlocks(1);
#else
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index d37f293..657a16a 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -907,6 +907,8 @@
int codesize, reservedpages, datasize, initsize;
int tmp;
+ start_periodic_check_for_corruption();
+
#ifdef CONFIG_FLATMEM
BUG_ON(!mem_map);
#endif
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index d3746ef..f4db527 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -769,6 +769,8 @@
{
long codesize, reservedpages, datasize, initsize;
+ start_periodic_check_for_corruption();
+
pci_iommu_alloc();
/* clear_bss() already clear the empty_zero_page */