3 files changed, 4 insertions, 1 deletions

diff --git a/arch/x86_64/kernel/apic.c b/arch/x86_64/kernel/apic.c
index b95d1e378b96..6472e321cad7 100644
--- a/arch/x86_64/kernel/apic.c
+++ b/arch/x86_64/kernel/apic.c
@@ -38,6 +38,7 @@
 #include <asm/timex.h>
 #include <asm/apic.h>
 
+int apic_mapped;
 int apic_verbosity;
 int apic_runs_main_timer;
 int apic_calibrate_pmtmr __initdata;
@@ -600,6 +601,7 @@ void __init init_apic_mappings(void)
                 apic_phys = mp_lapic_addr;
 
         set_fixmap_nocache(FIX_APIC_BASE, apic_phys);
+        apic_mapped = 1;
         apic_printk(APIC_VERBOSE,"mapped APIC to %16lx (%16lx)\n", APIC_BASE, apic_phys);
 
         /*
diff --git a/arch/x86_64/kernel/smp.c b/arch/x86_64/kernel/smp.c
index 06af6ca60129..2df988bbf312 100644
--- a/arch/x86_64/kernel/smp.c
+++ b/arch/x86_64/kernel/smp.c
@@ -526,7 +526,7 @@ int safe_smp_processor_id(void)
 {
         unsigned apicid, i;
 
-        if (disable_apic)
+        if (disable_apic || !apic_mapped)
                 return 0;
 
         apicid = hard_smp_processor_id();
diff --git a/include/asm-x86_64/apic.h b/include/asm-x86_64/apic.h
index 29ee735278f2..9e66d32330c9 100644
--- a/include/asm-x86_64/apic.h
+++ b/include/asm-x86_64/apic.h
@@ -18,6 +18,7 @@
 extern int apic_verbosity;
 extern int apic_runs_main_timer;
 extern int ioapic_force;
+extern int apic_mapped;
 
 /*
  * Define the default level of output to be very little