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/kernel/setup.c b/arch/x86/kernel/setup.c
index ee89ebc..c239b37 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -623,6 +623,7 @@
}
static int __read_mostly bios_corruption_check = 1;
+static struct timer_list periodic_check_timer;
void check_for_bios_corruption(void)
{
@@ -650,6 +651,22 @@
dump_stack();
}
+static void periodic_check_for_corruption(unsigned long data)
+{
+ check_for_bios_corruption();
+ mod_timer(&periodic_check_timer, jiffies + 60*HZ);
+}
+
+void start_periodic_check_for_corruption(void)
+{
+ if (!bios_corruption_check)
+ return;
+
+ init_timer(&periodic_check_timer);
+ periodic_check_timer.function = &periodic_check_for_corruption;
+ periodic_check_for_corruption(0);
+}
+
static int set_bios_corruption_check(char *arg)
{
char *end;