6 files changed, 28 insertions, 34 deletions

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 036d28adf59d..0acbcdfa5ca4 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -1185,9 +1185,6 @@ static void __init acpi_process_madt(void)
                 if (!error) {
                         acpi_lapic = 1;
 
-#ifdef CONFIG_X86_BIGSMP
-                        generic_bigsmp_probe();
-#endif
                         /*
                          * Parse MADT IO-APIC entries
                          */
@@ -1197,8 +1194,6 @@ static void __init acpi_process_madt(void)
                                 acpi_ioapic = 1;
 
                                 smp_found_config = 1;
-                                if (apic->setup_apic_routing)
-                                        apic->setup_apic_routing();
                         }
                 }
                 if (error == -EINVAL) {
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 3987e4408f75..dfca210f6a10 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1641,9 +1641,7 @@ int __init APIC_init_uniprocessor(void)
 #endif
 
         enable_IR_x2apic();
-#ifdef CONFIG_X86_64
         default_setup_apic_routing();
-#endif
 
         verify_local_APIC();
         connect_bsp_APIC();
@@ -1891,21 +1889,6 @@ void __cpuinit generic_processor_info(int apicid, int version)
         if (apicid > max_physical_apicid)
                 max_physical_apicid = apicid;
 
-#ifdef CONFIG_X86_32
-        if (num_processors > 8) {
-                switch (boot_cpu_data.x86_vendor) {
-                case X86_VENDOR_INTEL:
-                        if (!APIC_XAPIC(version)) {
-                                def_to_bigsmp = 0;
-                                break;
-                        }
-                        /* If P4 and above fall through */
-                case X86_VENDOR_AMD:
-                        def_to_bigsmp = 1;
-                }
-        }
-#endif
-
 #if defined(CONFIG_SMP) || defined(CONFIG_X86_64)
         early_per_cpu(x86_cpu_to_apicid, cpu) = apicid;
         early_per_cpu(x86_bios_cpu_apicid, cpu) = apicid;
diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c
index 1a6559f6768c..99d2fe016084 100644
--- a/arch/x86/kernel/apic/probe_32.c
+++ b/arch/x86/kernel/apic/probe_32.c
@@ -52,7 +52,32 @@ static int __init print_ipi_mode(void)
 }
 late_initcall(print_ipi_mode);
 
-void default_setup_apic_routing(void)
+void __init default_setup_apic_routing(void)
+{
+        int version = apic_version[boot_cpu_physical_apicid];
+
+        if (num_possible_cpus() > 8) {
+                switch (boot_cpu_data.x86_vendor) {
+                case X86_VENDOR_INTEL:
+                        if (!APIC_XAPIC(version)) {
+                                def_to_bigsmp = 0;
+                                break;
+                        }
+                        /* If P4 and above fall through */
+                case X86_VENDOR_AMD:
+                        def_to_bigsmp = 1;
+                }
+        }
+
+#ifdef CONFIG_X86_BIGSMP
+        generic_bigsmp_probe();
+#endif
+
+        if (apic->setup_apic_routing)
+                apic->setup_apic_routing();
+}
+
+static void setup_apic_flat_routing(void)
 {
 #ifdef CONFIG_X86_IO_APIC
         printk(KERN_INFO
@@ -103,7 +128,7 @@ struct apic apic_default = {
         .init_apic_ldr                  = default_init_apic_ldr,
 
         .ioapic_phys_id_map             = default_ioapic_phys_id_map,
-        .setup_apic_routing             = default_setup_apic_routing,
+        .setup_apic_routing             = setup_apic_flat_routing,
         .multi_timer_check              = NULL,
         .apicid_to_node                 = default_apicid_to_node,
         .cpu_to_logical_apicid          = default_cpu_to_logical_apicid,
diff --git a/arch/x86/kernel/apic/probe_64.c b/arch/x86/kernel/apic/probe_64.c
index 450fe2064a14..83e9be4778e2 100644
--- a/arch/x86/kernel/apic/probe_64.c
+++ b/arch/x86/kernel/apic/probe_64.c
@@ -67,7 +67,7 @@ void __init default_setup_apic_routing(void)
         }
 #endif
 
-        if (apic == &apic_flat && num_processors > 8)
+        if (apic == &apic_flat && num_possible_cpus() > 8)
                         apic = &apic_physflat;
 
         printk(KERN_INFO "Setting APIC routing to %s\n", apic->name);
diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index 40b54ceb68b5..a2c1edd2d3ac 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -359,13 +359,6 @@ static int __init smp_read_mpc(struct mpc_table *mpc, unsigned early)
                 x86_init.mpparse.mpc_record(1);
         }
 
-#ifdef CONFIG_X86_BIGSMP
-        generic_bigsmp_probe();
-#endif
-
-        if (apic->setup_apic_routing)
-                apic->setup_apic_routing();
-
         if (!num_processors)
                 printk(KERN_ERR "MPTABLE: no processors registered!\n");
         return num_processors;
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 678d0b8c26f3..b4e870cbdc60 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1083,9 +1083,7 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
         set_cpu_sibling_map(0);
 
         enable_IR_x2apic();
-#ifdef CONFIG_X86_64
         default_setup_apic_routing();
-#endif
 
         if (smp_sanity_check(max_cpus) < 0) {
                 printk(KERN_INFO "SMP disabled\n");