1 files changed, 8 insertions, 5 deletions

diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 7a324e8b86f9..08540bc4ba3e 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -31,7 +31,7 @@
 #include <linux/mc146818rtc.h>
 #include <linux/compiler.h>
 #include <linux/acpi.h>
-
+#include <linux/module.h>
 #include <linux/sysdev.h>
 #include <asm/io.h>
 #include <asm/smp.h>
@@ -812,6 +812,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin)
         }
         return best_guess;
 }
+EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector);
 
 /*
  * This function currently is only a helper for the i386 smp boot process where 
@@ -1659,6 +1660,12 @@ static void __init setup_ioapic_ids_from_mpc(void)
         unsigned long flags;
 
         /*
+         * Don't check I/O APIC IDs for xAPIC systems.  They have
+         * no meaning without the serial APIC bus.
+         */
+        if (!(boot_cpu_data.x86_vendor == X86_VENDOR_INTEL && boot_cpu_data.x86 < 15))
+                return;
+        /*
          * This is broken; anything with a real cpu count has to
          * circumvent this idiocy regardless.
          */
@@ -1684,10 +1691,6 @@ static void __init setup_ioapic_ids_from_mpc(void)
                         mp_ioapics[apic].mpc_apicid = reg_00.bits.ID;
                 }
 
-                /* Don't check I/O APIC IDs for some xAPIC systems.  They have
-                 * no meaning without the serial APIC bus. */
-                if (NO_IOAPIC_CHECK)
-                        continue;
                 /*
                  * Sanity check, is the ID really free? Every APIC in a
                  * system must have a unique ID or we get lots of nice