1 files changed, 22 insertions, 23 deletions

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 707165dbc20..ed41562909f 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -36,6 +36,7 @@
 #include <linux/fs.h>
 #include <linux/mm.h>
 #include <linux/debugfs.h>
+#include <linux/edac_mce.h>
 
 #include <asm/processor.h>
 #include <asm/hw_irq.h>
@@ -50,7 +51,7 @@
 static DEFINE_MUTEX(mce_read_mutex);
 
 #define rcu_dereference_check_mce(p) \
-	rcu_dereference_check((p), \
+	rcu_dereference_index_check((p), \
 			      rcu_read_lock_sched_held() || \
 			      lockdep_is_held(&mce_read_mutex))
 
@@ -106,8 +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;
 }
@@ -169,6 +170,15 @@ void mce_log(struct mce *mce)
 		entry = rcu_dereference_check_mce(mcelog.next);
 		for (;;) {
 			/*
+			 * If edac_mce is enabled, it will check the error type
+			 * and will process it, if it is a known error.
+			 * Otherwise, the error will be sent through mcelog
+			 * interface
+			 */
+			if (edac_mce_parse(mce))
+				return;
+
+			/*
 			 * When the buffer fills up discard new entries.
 			 * Assume that the earlier errors are the more
 			 * interesting ones:
@@ -201,11 +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);
 
@@ -214,14 +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);
 
 	/*
@@ -231,16 +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;
@@ -281,7 +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];
@@ -312,16 +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 */
@@ -590,6 +588,7 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b)
 		 */
 		if (!(flags & MCP_DONTLOG) && !mce_dont_log_ce) {
 			mce_log(&m);
+			atomic_notifier_call_chain(&x86_mce_decoder_chain, 0, &m);
 			add_taint(TAINT_MACHINE_CHECK);
 		}
 
@@ -1210,7 +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;
 	}