Merge commit 'v2.6.27-rc3' into x86/prototypes

Conflicts:

	include/asm-x86/dma-mapping.h

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 23 insertions, 7 deletions

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index a9331a42f76f..6112c3632345 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -326,12 +326,16 @@ static void __cpuinit start_secondary(void *unused)
          * for which cpus receive the IPI. Holding this
          * lock helps us to not include this cpu in a currently in progress
          * smp_call_function().
+         *
+         * We need to hold vector_lock so there the set of online cpus
+         * does not change while we are assigning vectors to cpus.  Holding
+         * this lock ensures we don't half assign or remove an irq from a cpu.
          */
         ipi_call_lock_irq();
-#ifdef CONFIG_X86_IO_APIC
-        setup_vector_irq(smp_processor_id());
-#endif
+        lock_vector_lock();
+        __setup_vector_irq(smp_processor_id());
         cpu_set(smp_processor_id(), cpu_online_map);
+        unlock_vector_lock();
         ipi_call_unlock_irq();
         per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE;
 
@@ -438,7 +442,7 @@ void __cpuinit set_cpu_sibling_map(int cpu)
         cpu_set(cpu, cpu_sibling_setup_map);
 
         if (smp_num_siblings > 1) {
-                for_each_cpu_mask(i, cpu_sibling_setup_map) {
+                for_each_cpu_mask_nr(i, cpu_sibling_setup_map) {
                         if (c->phys_proc_id == cpu_data(i).phys_proc_id &&
                             c->cpu_core_id == cpu_data(i).cpu_core_id) {
                                 cpu_set(i, per_cpu(cpu_sibling_map, cpu));
@@ -461,7 +465,7 @@ void __cpuinit set_cpu_sibling_map(int cpu)
                 return;
         }
 
-        for_each_cpu_mask(i, cpu_sibling_setup_map) {
+        for_each_cpu_mask_nr(i, cpu_sibling_setup_map) {
                 if (per_cpu(cpu_llc_id, cpu) != BAD_APICID &&
                     per_cpu(cpu_llc_id, cpu) == per_cpu(cpu_llc_id, i)) {
                         cpu_set(i, c->llc_shared_map);
@@ -990,7 +994,17 @@ int __cpuinit native_cpu_up(unsigned int cpu)
         flush_tlb_all();
         low_mappings = 1;
 
+#ifdef CONFIG_X86_PC
+        if (def_to_bigsmp && apicid > 8) {
+                printk(KERN_WARNING
+                        "More than 8 CPUs detected - skipping them.\n"
+                        "Use CONFIG_X86_GENERICARCH and CONFIG_X86_BIGSMP.\n");
+                err = -1;
+        } else
+                err = do_boot_cpu(apicid, cpu);
+#else
         err = do_boot_cpu(apicid, cpu);
+#endif
 
         zap_low_mappings();
         low_mappings = 0;
@@ -1219,7 +1233,7 @@ static void remove_siblinginfo(int cpu)
         int sibling;
         struct cpuinfo_x86 *c = &cpu_data(cpu);
 
-        for_each_cpu_mask(sibling, per_cpu(cpu_core_map, cpu)) {
+        for_each_cpu_mask_nr(sibling, per_cpu(cpu_core_map, cpu)) {
                 cpu_clear(cpu, per_cpu(cpu_core_map, sibling));
                 /*/
                  * last thread sibling in this cpu core going down
@@ -1228,7 +1242,7 @@ static void remove_siblinginfo(int cpu)
                         cpu_data(sibling).booted_cores--;
         }
 
-        for_each_cpu_mask(sibling, per_cpu(cpu_sibling_map, cpu))
+        for_each_cpu_mask_nr(sibling, per_cpu(cpu_sibling_map, cpu))
                 cpu_clear(cpu, per_cpu(cpu_sibling_map, sibling));
         cpus_clear(per_cpu(cpu_sibling_map, cpu));
         cpus_clear(per_cpu(cpu_core_map, cpu));
@@ -1336,7 +1350,9 @@ int __cpu_disable(void)
         remove_siblinginfo(cpu);
 
         /* It's now safe to remove this processor from the online map */
+        lock_vector_lock();
         remove_cpu_from_maps(cpu);
+        unlock_vector_lock();
         fixup_irqs(cpu_online_map);
         return 0;
 }