Merge branch 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, mce: Use HW_ERR in MCE handler
  x86, mce: Add HW_ERR printk prefix for hardware error logging
  x86, mce: Fix MSR_IA32_MCI_CTL2 CMCI threshold setup
  x86, mce: Rename MSR_IA32_MCx_CTL2 value

2 files changed, 15 insertions, 26 deletions

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index e1269d6..ed41562 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -107,8 +107,8 @@ EXPORT_SYMBOL_GPL(x86_mce_decoder_chain);
 static int default_decode_mce(struct notifier_block *nb, unsigned long val,
 			       void *data)
 {
-	pr_emerg("No human readable MCE decoding support on this CPU type.\n");
-	pr_emerg("Run the message through 'mcelog --ascii' to decode.\n");
+	pr_emerg(HW_ERR "No human readable MCE decoding support on this CPU type.\n");
+	pr_emerg(HW_ERR "Run the message through 'mcelog --ascii' to decode.\n");
 
 	return NOTIFY_STOP;
 }
@@ -211,11 +211,11 @@ void mce_log(struct mce *mce)
 
 static void print_mce(struct mce *m)
 {
-	pr_emerg("CPU %d: Machine Check Exception: %16Lx Bank %d: %016Lx\n",
+	pr_emerg(HW_ERR "CPU %d: Machine Check Exception: %Lx Bank %d: %016Lx\n",
 	       m->extcpu, m->mcgstatus, m->bank, m->status);
 
 	if (m->ip) {
-		pr_emerg("RIP%s %02x:<%016Lx> ",
+		pr_emerg(HW_ERR "RIP%s %02x:<%016Lx> ",
 			!(m->mcgstatus & MCG_STATUS_EIPV) ? " !INEXACT!" : "",
 				m->cs, m->ip);
 
@@ -224,14 +224,14 @@ static void print_mce(struct mce *m)
 		pr_cont("\n");
 	}
 
-	pr_emerg("TSC %llx ", m->tsc);
+	pr_emerg(HW_ERR "TSC %llx ", m->tsc);
 	if (m->addr)
 		pr_cont("ADDR %llx ", m->addr);
 	if (m->misc)
 		pr_cont("MISC %llx ", m->misc);
 
 	pr_cont("\n");
-	pr_emerg("PROCESSOR %u:%x TIME %llu SOCKET %u APIC %x\n",
+	pr_emerg(HW_ERR "PROCESSOR %u:%x TIME %llu SOCKET %u APIC %x\n",
 		m->cpuvendor, m->cpuid, m->time, m->socketid, m->apicid);
 
 	/*
@@ -241,16 +241,6 @@ static void print_mce(struct mce *m)
 	atomic_notifier_call_chain(&x86_mce_decoder_chain, 0, m);
 }
 
-static void print_mce_head(void)
-{
-	pr_emerg("\nHARDWARE ERROR\n");
-}
-
-static void print_mce_tail(void)
-{
-	pr_emerg("This is not a software problem!\n");
-}
-
 #define PANIC_TIMEOUT 5 /* 5 seconds */
 
 static atomic_t mce_paniced;
@@ -291,7 +281,6 @@ static void mce_panic(char *msg, struct mce *final, char *exp)
 		if (atomic_inc_return(&mce_fake_paniced) > 1)
 			return;
 	}
-	print_mce_head();
 	/* First print corrected ones that are still unlogged */
 	for (i = 0; i < MCE_LOG_LEN; i++) {
 		struct mce *m = &mcelog.entry[i];
@@ -322,16 +311,15 @@ static void mce_panic(char *msg, struct mce *final, char *exp)
 			apei_err = apei_write_mce(final);
 	}
 	if (cpu_missing)
-		printk(KERN_EMERG "Some CPUs didn't answer in synchronization\n");
-	print_mce_tail();
+		pr_emerg(HW_ERR "Some CPUs didn't answer in synchronization\n");
 	if (exp)
-		printk(KERN_EMERG "Machine check: %s\n", exp);
+		pr_emerg(HW_ERR "Machine check: %s\n", exp);
 	if (!fake_panic) {
 		if (panic_timeout == 0)
 			panic_timeout = mce_panic_timeout;
 		panic(msg);
 	} else
-		printk(KERN_EMERG "Fake kernel panic: %s\n", msg);
+		pr_emerg(HW_ERR "Fake kernel panic: %s\n", msg);
 }
 
 /* Support code for software error injection */
@@ -1221,7 +1209,7 @@ int mce_notify_irq(void)
 			schedule_work(&mce_trigger_work);
 
 		if (__ratelimit(&ratelimit))
-			printk(KERN_INFO "Machine check events logged\n");
+			pr_info(HW_ERR "Machine check events logged\n");
 
 		return 1;
 	}
diff --git a/arch/x86/kernel/cpu/mcheck/mce_intel.c b/arch/x86/kernel/cpu/mcheck/mce_intel.c
index 62b48e4..6fcd093 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_intel.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_intel.c
@@ -95,19 +95,20 @@ static void cmci_discover(int banks, int boot)
 		rdmsrl(MSR_IA32_MCx_CTL2(i), val);
 
 		/* Already owned by someone else? */
-		if (val & CMCI_EN) {
+		if (val & MCI_CTL2_CMCI_EN) {
 			if (test_and_clear_bit(i, owned) && !boot)
 				print_update("SHD", &hdr, i);
 			__clear_bit(i, __get_cpu_var(mce_poll_banks));
 			continue;
 		}
 
-		val |= CMCI_EN | CMCI_THRESHOLD;
+		val &= ~MCI_CTL2_CMCI_THRESHOLD_MASK;
+		val |= MCI_CTL2_CMCI_EN | CMCI_THRESHOLD;
 		wrmsrl(MSR_IA32_MCx_CTL2(i), val);
 		rdmsrl(MSR_IA32_MCx_CTL2(i), val);
 
 		/* Did the enable bit stick? -- the bank supports CMCI */
-		if (val & CMCI_EN) {
+		if (val & MCI_CTL2_CMCI_EN) {
 			if (!test_and_set_bit(i, owned) && !boot)
 				print_update("CMCI", &hdr, i);
 			__clear_bit(i, __get_cpu_var(mce_poll_banks));
@@ -155,7 +156,7 @@ void cmci_clear(void)
 			continue;
 		/* Disable CMCI */
 		rdmsrl(MSR_IA32_MCx_CTL2(i), val);
-		val &= ~(CMCI_EN|CMCI_THRESHOLD_MASK);
+		val &= ~(MCI_CTL2_CMCI_EN|MCI_CTL2_CMCI_THRESHOLD_MASK);
 		wrmsrl(MSR_IA32_MCx_CTL2(i), val);
 		__clear_bit(i, __get_cpu_var(mce_banks_owned));
 	}