5 files changed, 19 insertions, 7 deletions

diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index c6c90f39f4d9..7b897b7b0ae6 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -477,6 +477,12 @@ acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
         if (!(pa->flags & ACPI_SRAT_CPU_ENABLED))
                 return;
 
+        if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) {
+                printk_once(KERN_WARNING
+                            "node_cpuid[%d] is too small, may not be able to use all cpus\n",
+                            ARRAY_SIZE(node_cpuid));
+                return;
+        }
         pxm = get_processor_proximity_domain(pa);
 
         /* record this node in proximity bitmap */
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index 9a26015c3e50..38c07b866901 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -633,7 +633,7 @@ ia64_native_register_percpu_irq (ia64_vector vec, struct irqaction *action)
         BUG_ON(bind_irq_vector(irq, vec, CPU_MASK_ALL));
         desc = irq_desc + irq;
         desc->status |= IRQ_PER_CPU;
-        desc->chip = &irq_type_ia64_lsapic;
+        set_irq_chip(irq, &irq_type_ia64_lsapic);
         if (action)
                 setup_irq(irq, action);
         set_irq_handler(irq, handle_percpu_irq);
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index f099b82703d8..d92d5b5161fc 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -829,10 +829,9 @@ pfm_rvmalloc(unsigned long size)
         unsigned long addr;
 
         size = PAGE_ALIGN(size);
-        mem  = vmalloc(size);
+        mem  = vzalloc(size);
         if (mem) {
                 //printk("perfmon: CPU%d pfm_rvmalloc(%ld)=%p\n", smp_processor_id(), size, mem);
-                memset(mem, 0, size);
                 addr = (unsigned long)mem;
                 while (size > 0) {
                         pfm_reserve_page(addr);
diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c
index dabeefe21134..be450a3e9871 100644
--- a/arch/ia64/kernel/smp.c
+++ b/arch/ia64/kernel/smp.c
@@ -293,6 +293,7 @@ smp_flush_tlb_all (void)
 void
 smp_flush_tlb_mm (struct mm_struct *mm)
 {
+        cpumask_var_t cpus;
         preempt_disable();
         /* this happens for the common case of a single-threaded fork():  */
         if (likely(mm == current->active_mm && atomic_read(&mm->mm_users) == 1))
@@ -301,9 +302,15 @@ smp_flush_tlb_mm (struct mm_struct *mm)
                 preempt_enable();
                 return;
         }
-
-        smp_call_function_many(mm_cpumask(mm),
-                (void (*)(void *))local_finish_flush_tlb_mm, mm, 1);
+        if (!alloc_cpumask_var(&cpus, GFP_ATOMIC)) {
+                smp_call_function((void (*)(void *))local_finish_flush_tlb_mm,
+                        mm, 1);
+        } else {
+                cpumask_copy(cpus, mm_cpumask(mm));
+                smp_call_function_many(cpus,
+                        (void (*)(void *))local_finish_flush_tlb_mm, mm, 1);
+                free_cpumask_var(cpus);
+        }
         local_irq_disable();
         local_finish_flush_tlb_mm(mm);
         local_irq_enable();
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index ed6f22eb5b12..9702fa92489e 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -168,7 +168,7 @@ timer_interrupt (int irq, void *dev_id)
 {
         unsigned long new_itm;
 
-        if (unlikely(cpu_is_offline(smp_processor_id()))) {
+        if (cpu_is_offline(smp_processor_id())) {
                 return IRQ_HANDLED;
         }