1 files changed, 9 insertions, 0 deletions

diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c
index 8e4ed930ce6b..6e5085d5d2f6 100644
--- a/arch/i386/kernel/nmi.c
+++ b/arch/i386/kernel/nmi.c
@@ -21,6 +21,7 @@
 #include <linux/sysdev.h>
 #include <linux/sysctl.h>
 #include <linux/percpu.h>
+#include <linux/dmi.h>
 
 #include <asm/smp.h>
 #include <asm/nmi.h>
@@ -204,6 +205,14 @@ static int __init check_nmi_watchdog(void)
         unsigned int *prev_nmi_count;
         int cpu;
 
+        /* Enable NMI watchdog for newer systems.
+           Actually it should be safe for most systems before 2004 too except
+           for some IBM systems that corrupt registers when NMI happens
+           during SMM. Unfortunately we don't have more exact information
+           on these and use this coarse check. */
+        if (nmi_watchdog == NMI_DEFAULT && dmi_get_year(DMI_BIOS_DATE) >= 2004)
+                nmi_watchdog = NMI_LOCAL_APIC;
+
         if ((nmi_watchdog == NMI_NONE) || (nmi_watchdog == NMI_DEFAULT))
                 return 0;