1 files changed, 18 insertions, 22 deletions

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index c0f6426cd337..ce65d449b750 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -31,7 +31,6 @@
 #include <linux/init.h>
 #include <linux/cpu.h>
 #include <linux/dmi.h>
-#include <linux/nmi.h>
 #include <linux/smp.h>
 #include <linux/mm.h>
 
@@ -432,17 +431,18 @@ int setup_APIC_eilvt(u8 offset, u8 vector, u8 msg_type, u8 mask)
         reserved = reserve_eilvt_offset(offset, new);
 
         if (reserved != new) {
-                pr_err(FW_BUG "cpu %d, try to setup vector 0x%x, but "
-                       "vector 0x%x was already reserved by another core, "
-                       "APIC%lX=0x%x\n",
-                       smp_processor_id(), new, reserved, reg, old);
+                pr_err(FW_BUG "cpu %d, try to use APIC%lX (LVT offset %d) for "
+                       "vector 0x%x, but the register is already in use for "
+                       "vector 0x%x on another cpu\n",
+                       smp_processor_id(), reg, offset, new, reserved);
                 return -EINVAL;
         }
 
         if (!eilvt_entry_is_changeable(old, new)) {
-                pr_err(FW_BUG "cpu %d, try to setup vector 0x%x but "
-                       "register already in use, APIC%lX=0x%x\n",
-                       smp_processor_id(), new, reg, old);
+                pr_err(FW_BUG "cpu %d, try to use APIC%lX (LVT offset %d) for "
+                       "vector 0x%x, but the register is already in use for "
+                       "vector 0x%x on this cpu\n",
+                       smp_processor_id(), reg, offset, new, old);
                 return -EBUSY;
         }
 
@@ -799,11 +799,7 @@ void __init setup_boot_APIC_clock(void)
          * PIT/HPET going.  Otherwise register lapic as a dummy
          * device.
          */
-        if (nmi_watchdog != NMI_IO_APIC)
-                lapic_clockevent.features &= ~CLOCK_EVT_FEAT_DUMMY;
-        else
-                pr_warning("APIC timer registered as dummy,"
-                        " due to nmi_watchdog=%d!\n", nmi_watchdog);
+        lapic_clockevent.features &= ~CLOCK_EVT_FEAT_DUMMY;
 
         /* Setup the lapic or request the broadcast */
         setup_APIC_timer();
@@ -1384,8 +1380,15 @@ void __cpuinit end_local_APIC_setup(void)
         }
 #endif
 
-        setup_apic_nmi_watchdog(NULL);
         apic_pm_activate();
+
+        /*
+         * Now that local APIC setup is completed for BP, configure the fault
+         * handling for interrupt remapping.
+         */
+        if (!smp_processor_id() && intr_remapping_enabled)
+                enable_drhd_fault_handling();
+
 }
 
 #ifdef CONFIG_X86_X2APIC
@@ -1694,7 +1697,7 @@ void __init register_lapic_address(unsigned long address)
  * This initializes the IO-APIC and APIC hardware if this is
  * a UP kernel.
  */
-int apic_version[MAX_APICS];
+int apic_version[MAX_LOCAL_APIC];
 
 int __init APIC_init_uniprocessor(void)
 {
@@ -1759,17 +1762,10 @@ int __init APIC_init_uniprocessor(void)
                 setup_IO_APIC();
         else {
                 nr_ioapics = 0;
-                localise_nmi_watchdog();
         }
-#else
-        localise_nmi_watchdog();
 #endif
 
         x86_init.timers.setup_percpu_clockev();
-#ifdef CONFIG_X86_64
-        check_nmi_watchdog();
-#endif
-
         return 0;
 }