Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Skip cpus with apic-ids >= 255 in !x2apic_mode
  x86, x2apic: Allow "nox2apic" to disable x2apic mode setup by BIOS
  x86, x2apic: Fallback to xapic when BIOS doesn't setup interrupt-remapping
  x86, acpi: Skip acpi x2apic entries if the x2apic feature is not present
  x86, apic: Add probe() for apic_flat
  x86: Simplify code by removing a !SMP #ifdefs from 'struct cpuinfo_x86'
  x86: Convert per-cpu counter icr_read_retry_count into a member of irq_stat
  x86: Add per-cpu stat counter for APIC ICR read tries
  pci, x86/io-apic: Allow PCI_IOAPIC to be user configurable on x86
  x86: Fix the !CONFIG_NUMA build of the new CPU ID fixup code support
  x86: Add NumaChip support
  x86: Add x86_init platform override to fix up NUMA core numbering
  x86: Make flat_init_apic_ldr() available

6 files changed, 18 insertions, 20 deletions

diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 0bab2b18bb20..f4773f4aae35 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -148,7 +148,6 @@ static void __cpuinit init_amd_k6(struct cpuinfo_x86 *c)
 
 static void __cpuinit amd_k7_smp_check(struct cpuinfo_x86 *c)
 {
-#ifdef CONFIG_SMP
 	/* calling is from identify_secondary_cpu() ? */
 	if (!c->cpu_index)
 		return;
@@ -192,7 +191,6 @@ static void __cpuinit amd_k7_smp_check(struct cpuinfo_x86 *c)
 
 valid_k7:
 	;
-#endif
 }
 
 static void __cpuinit init_amd_k7(struct cpuinfo_x86 *c)
@@ -353,6 +351,13 @@ static void __cpuinit srat_detect_node(struct cpuinfo_x86 *c)
 	if (node == NUMA_NO_NODE)
 		node = per_cpu(cpu_llc_id, cpu);
 
+	/*
+	 * If core numbers are inconsistent, it's likely a multi-fabric platform,
+	 * so invoke platform-specific handler
+	 */
+	if (c->phys_proc_id != node)
+		x86_cpuinit.fixup_cpu_id(c, node);
+
 	if (!node_online(node)) {
 		/*
 		 * Two possibilities here:
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index aa003b13a831..850f2963a420 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -676,9 +676,7 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c)
 	if (this_cpu->c_early_init)
 		this_cpu->c_early_init(c);
 
-#ifdef CONFIG_SMP
 	c->cpu_index = 0;
-#endif
 	filter_cpuid_features(c, false);
 
 	setup_smep(c);
@@ -764,10 +762,7 @@ static void __cpuinit generic_identify(struct cpuinfo_x86 *c)
 		c->apicid = c->initial_apicid;
 # endif
 #endif
-
-#ifdef CONFIG_X86_HT
 		c->phys_proc_id = c->initial_apicid;
-#endif
 	}
 
 	setup_smep(c);
@@ -1141,6 +1136,15 @@ static void dbg_restore_debug_regs(void)
 #endif /* ! CONFIG_KGDB */
 
 /*
+ * Prints an error where the NUMA and configured core-number mismatch and the
+ * platform didn't override this to fix it up
+ */
+void __cpuinit x86_default_fixup_cpu_id(struct cpuinfo_x86 *c, int node)
+{
+	pr_err("NUMA core number %d differs from configured core number %d\n", node, c->phys_proc_id);
+}
+
+/*
  * cpu_init() initializes state that is per-CPU. Some data is already
  * initialized (naturally) in the bootstrap process, such as the GDT
  * and IDT. We reload them nevertheless, this function acts as a
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index 523131213f08..3e6ff6cbf42a 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -181,7 +181,6 @@ static void __cpuinit trap_init_f00f_bug(void)
 
 static void __cpuinit intel_smp_check(struct cpuinfo_x86 *c)
 {
-#ifdef CONFIG_SMP
 	/* calling is from identify_secondary_cpu() ? */
 	if (!c->cpu_index)
 		return;
@@ -198,7 +197,6 @@ static void __cpuinit intel_smp_check(struct cpuinfo_x86 *c)
 		WARN_ONCE(1, "WARNING: SMP operation may be unreliable"
 				    "with B stepping processors.\n");
 	}
-#endif
 }
 
 static void __cpuinit intel_workarounds(struct cpuinfo_x86 *c)
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 2af127d4c3d1..e9c9d0aab36a 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -119,9 +119,7 @@ void mce_setup(struct mce *m)
 	m->time = get_seconds();
 	m->cpuvendor = boot_cpu_data.x86_vendor;
 	m->cpuid = cpuid_eax(1);
-#ifdef CONFIG_SMP
 	m->socketid = cpu_data(m->extcpu).phys_proc_id;
-#endif
 	m->apicid = cpu_data(m->extcpu).initial_apicid;
 	rdmsrl(MSR_IA32_MCG_CAP, m->mcgcap);
 }
diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd.c b/arch/x86/kernel/cpu/mcheck/mce_amd.c
index f5474218cffe..1d76872b6a45 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_amd.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_amd.c
@@ -64,11 +64,9 @@ struct threshold_bank {
 };
 static DEFINE_PER_CPU(struct threshold_bank * [NR_BANKS], threshold_banks);
 
-#ifdef CONFIG_SMP
 static unsigned char shared_bank[NR_BANKS] = {
 	0, 0, 0, 0, 1
 };
-#endif
 
 static DEFINE_PER_CPU(unsigned char, bank_map);	/* see which banks are on */
 
@@ -202,10 +200,9 @@ void mce_amd_feature_init(struct cpuinfo_x86 *c)
 
 			if (!block)
 				per_cpu(bank_map, cpu) |= (1 << bank);
-#ifdef CONFIG_SMP
 			if (shared_bank[bank] && c->cpu_core_id)
 				break;
-#endif
+
 			offset = setup_APIC_mce(offset,
 						(high & MASK_LVTOFF_HI) >> 20);
 
@@ -531,7 +528,6 @@ static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
 
 	sprintf(name, "threshold_bank%i", bank);
 
-#ifdef CONFIG_SMP
 	if (cpu_data(cpu).cpu_core_id && shared_bank[bank]) {	/* symlink */
 		i = cpumask_first(cpu_llc_shared_mask(cpu));
 
@@ -558,7 +554,6 @@ static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
 
 		goto out;
 	}
-#endif
 
 	b = kzalloc(sizeof(struct threshold_bank), GFP_KERNEL);
 	if (!b) {
diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c
index 14b23140e81f..8022c6681485 100644
--- a/arch/x86/kernel/cpu/proc.c
+++ b/arch/x86/kernel/cpu/proc.c
@@ -64,12 +64,10 @@ static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c)
 static int show_cpuinfo(struct seq_file *m, void *v)
 {
 	struct cpuinfo_x86 *c = v;
-	unsigned int cpu = 0;
+	unsigned int cpu;
 	int i;
 
-#ifdef CONFIG_SMP
 	cpu = c->cpu_index;
-#endif
 	seq_printf(m, "processor\t: %u\n"
 		   "vendor_id\t: %s\n"
 		   "cpu family\t: %d\n"