Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

[linux.git] / arch / x86 / kernel / cpu / mcheck / mce_intel.c

diff --git a/arch/x86/kernel/cpu/mcheck/mce_intel.c b/arch/x86/kernel/cpu/mcheck/mce_intel.c
index fb6156fee6f79dcc07559a9765f3702d7365506d..3bdb95ae8c430fa8bacc76a9f644c4abce8ec35e 100644 (file)
--- a/arch/x86/kernel/cpu/mcheck/mce_intel.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_intel.c
@@ -9,6 +9,7 @@
 #include <linux/interrupt.h>
 #include <linux/percpu.h>
 #include <linux/sched.h>
+#include <linux/cpumask.h>
 #include <asm/apic.h>
 #include <asm/processor.h>
 #include <asm/msr.h>
@@ -137,6 +138,22 @@ unsigned long mce_intel_adjust_timer(unsigned long interval)
        }
 }
 
+static void cmci_storm_disable_banks(void)
+{
+       unsigned long flags, *owned;
+       int bank;
+       u64 val;
+
+       raw_spin_lock_irqsave(&cmci_discover_lock, flags);
+       owned = __get_cpu_var(mce_banks_owned);
+       for_each_set_bit(bank, owned, MAX_NR_BANKS) {
+               rdmsrl(MSR_IA32_MCx_CTL2(bank), val);
+               val &= ~MCI_CTL2_CMCI_EN;
+               wrmsrl(MSR_IA32_MCx_CTL2(bank), val);
+       }
+       raw_spin_unlock_irqrestore(&cmci_discover_lock, flags);
+}
+
 static bool cmci_storm_detect(void)
 {
        unsigned int cnt = __this_cpu_read(cmci_storm_cnt);
@@ -158,7 +175,7 @@ static bool cmci_storm_detect(void)
        if (cnt <= CMCI_STORM_THRESHOLD)
                return false;
 
-       cmci_clear();
+       cmci_storm_disable_banks();
        __this_cpu_write(cmci_storm_state, CMCI_STORM_ACTIVE);
        r = atomic_add_return(1, &cmci_storm_on_cpus);
        mce_timer_kick(CMCI_POLL_INTERVAL);