1 files changed, 28 insertions, 4 deletions

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index f4d6841d2bdf..e193de44ef19 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -52,7 +52,7 @@ void (*machine_check_vector)(struct pt_regs *, long error_code) =
 
 int                             mce_disabled;
 
-#ifdef CONFIG_X86_64
+#ifdef CONFIG_X86_NEW_MCE
 
 #define MISC_MCELOG_MINOR       227
 
@@ -662,6 +662,21 @@ static void mce_cpu_quirks(struct cpuinfo_x86 *c)
         }
 }
 
+static void __cpuinit mce_ancient_init(struct cpuinfo_x86 *c)
+{
+        if (c->x86 != 5)
+                return;
+        switch (c->x86_vendor) {
+        case X86_VENDOR_INTEL:
+                if (mce_p5_enabled())
+                        intel_p5_mcheck_init(c);
+                break;
+        case X86_VENDOR_CENTAUR:
+                winchip_mcheck_init(c);
+                break;
+        }
+}
+
 static void mce_cpu_features(struct cpuinfo_x86 *c)
 {
         switch (c->x86_vendor) {
@@ -695,6 +710,11 @@ static void mce_init_timer(void)
  */
 void __cpuinit mcheck_init(struct cpuinfo_x86 *c)
 {
+        if (mce_disabled)
+                return;
+
+        mce_ancient_init(c);
+
         if (!mce_available(c))
                 return;
 
@@ -893,6 +913,10 @@ static struct miscdevice mce_log_device = {
  */
 static int __init mcheck_enable(char *str)
 {
+        if (*str == 0)
+                enable_p5_mce();
+        if (*str == '=')
+                str++;
         if (!strcmp(str, "off"))
                 mce_disabled = 1;
         else if (!strcmp(str, "bootlog") || !strcmp(str, "nobootlog"))
@@ -900,13 +924,13 @@ static int __init mcheck_enable(char *str)
         else if (isdigit(str[0]))
                 get_option(&str, &tolerant);
         else {
-                printk(KERN_INFO "mce= argument %s ignored. Please use /sys\n",
+                printk(KERN_INFO "mce argument %s ignored. Please use /sys\n",
                        str);
                 return 0;
         }
         return 1;
 }
-__setup("mce=", mcheck_enable);
+__setup("mce", mcheck_enable);
 
 /*
  * Sysfs support
@@ -1259,7 +1283,7 @@ static __init int mce_init_device(void)
 
 device_initcall(mce_init_device);
 
-#else /* CONFIG_X86_32: */
+#else /* CONFIG_X86_OLD_MCE: */
 
 int nr_mce_banks;
 EXPORT_SYMBOL_GPL(nr_mce_banks);        /* non-fatal.o */