Merge branch 'x86/mce' into x86/ras

[firefly-linux-kernel-4.4.55.git] / arch / x86 / kernel / cpu / mcheck / mce.c

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index bf49cdbb010f3d519fa7f33eb07ba396877960d5..b3218cdee95f43a14ce2681e8a339e2cca28bcaa 100644 (file)
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -97,6 +97,15 @@ DEFINE_PER_CPU(mce_banks_t, mce_poll_banks) = {
        [0 ... BITS_TO_LONGS(MAX_NR_BANKS)-1] = ~0UL
 };
 
+/*
+ * MCA banks controlled through firmware first for corrected errors.
+ * This is a global list of banks for which we won't enable CMCI and we
+ * won't poll. Firmware controls these banks and is responsible for
+ * reporting corrected errors through GHES. Uncorrected/recoverable
+ * errors are still notified through a machine check.
+ */
+mce_banks_t mce_banks_ce_disabled;
+
 static DEFINE_PER_CPU(struct work_struct, mce_work);
 
 static void (*quirk_no_way_out)(int bank, struct mce *m, struct pt_regs *regs);
@@ -1363,7 +1372,7 @@ int mce_notify_irq(void)
 }
 EXPORT_SYMBOL_GPL(mce_notify_irq);
 
-static int __cpuinit __mcheck_cpu_mce_banks_init(void)
+static int __mcheck_cpu_mce_banks_init(void)
 {
        int i;
        u8 num_banks = mca_cfg.banks;
@@ -1384,7 +1393,7 @@ static int __cpuinit __mcheck_cpu_mce_banks_init(void)
 /*
  * Initialize Machine Checks for a CPU.
  */
-static int __cpuinit __mcheck_cpu_cap_init(void)
+static int __mcheck_cpu_cap_init(void)
 {
        unsigned b;
        u64 cap;
@@ -1483,7 +1492,7 @@ static void quirk_sandybridge_ifu(int bank, struct mce *m, struct pt_regs *regs)
 }
 
 /* Add per CPU specific workarounds here */
-static int __cpuinit __mcheck_cpu_apply_quirks(struct cpuinfo_x86 *c)
+static int __mcheck_cpu_apply_quirks(struct cpuinfo_x86 *c)
 {
        struct mca_config *cfg = &mca_cfg;
 
@@ -1593,7 +1602,7 @@ static int __cpuinit __mcheck_cpu_apply_quirks(struct cpuinfo_x86 *c)
        return 0;
 }
 
-static int __cpuinit __mcheck_cpu_ancient_init(struct cpuinfo_x86 *c)
+static int __mcheck_cpu_ancient_init(struct cpuinfo_x86 *c)
 {
        if (c->x86 != 5)
                return 0;
@@ -1664,7 +1673,7 @@ void (*machine_check_vector)(struct pt_regs *, long error_code) =
  * Called for each booted CPU to set up machine checks.
  * Must be called with preempt off:
  */
-void __cpuinit mcheck_cpu_init(struct cpuinfo_x86 *c)
+void mcheck_cpu_init(struct cpuinfo_x86 *c)
 {
        if (mca_cfg.disabled)
                return;
@@ -1935,6 +1944,25 @@ static struct miscdevice mce_chrdev_device = {
        &mce_chrdev_ops,
 };
 
+static void __mce_disable_bank(void *arg)
+{
+       int bank = *((int *)arg);
+       __clear_bit(bank, __get_cpu_var(mce_poll_banks));
+       cmci_disable_bank(bank);
+}
+
+void mce_disable_bank(int bank)
+{
+       if (bank >= mca_cfg.banks) {
+               pr_warn(FW_BUG
+                       "Ignoring request to disable invalid MCA bank %d.\n",
+                       bank);
+               return;
+       }
+       set_bit(bank, mce_banks_ce_disabled);
+       on_each_cpu(__mce_disable_bank, &bank, 1);
+}
+
 /*
  * mce=off Disables machine check
  * mce=no_cmci Disables CMCI
@@ -2082,7 +2110,6 @@ static struct bus_type mce_subsys = {
 
 DEFINE_PER_CPU(struct device *, mce_device);
 
-__cpuinitdata
 void (*threshold_cpu_callback)(unsigned long action, unsigned int cpu);
 
 static inline struct mce_bank *attr_to_bank(struct device_attribute *attr)
@@ -2228,7 +2255,7 @@ static void mce_device_release(struct device *dev)
 }
 
 /* Per cpu device init. All of the cpus still share the same ctrl bank: */
-static __cpuinit int mce_device_create(unsigned int cpu)
+static int mce_device_create(unsigned int cpu)
 {
        struct device *dev;
        int err;
@@ -2274,7 +2301,7 @@ error:
        return err;
 }
 
-static __cpuinit void mce_device_remove(unsigned int cpu)
+static void mce_device_remove(unsigned int cpu)
 {
        struct device *dev = per_cpu(mce_device, cpu);
        int i;
@@ -2294,7 +2321,7 @@ static __cpuinit void mce_device_remove(unsigned int cpu)
 }
 
 /* Make sure there are no machine checks on offlined CPUs. */
-static void __cpuinit mce_disable_cpu(void *h)
+static void mce_disable_cpu(void *h)
 {
        unsigned long action = *(unsigned long *)h;
        int i;
@@ -2312,7 +2339,7 @@ static void __cpuinit mce_disable_cpu(void *h)
        }
 }
 
-static void __cpuinit mce_reenable_cpu(void *h)
+static void mce_reenable_cpu(void *h)
 {
        unsigned long action = *(unsigned long *)h;
        int i;
@@ -2331,7 +2358,7 @@ static void __cpuinit mce_reenable_cpu(void *h)
 }
 
 /* Get notified when a cpu comes on/off. Be hotplug friendly. */
-static int __cpuinit
+static int
 mce_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
 {
        unsigned int cpu = (unsigned long)hcpu;
@@ -2367,7 +2394,7 @@ mce_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
        return NOTIFY_OK;
 }
 
-static struct notifier_block mce_cpu_notifier __cpuinitdata = {
+static struct notifier_block mce_cpu_notifier = {
        .notifier_call = mce_cpu_callback,
 };