4 files changed, 21 insertions, 3 deletions

diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
index 7e9ed1eea40a..d93f976fb389 100644
--- a/arch/arm/kernel/entry-header.S
+++ b/arch/arm/kernel/entry-header.S
@@ -102,6 +102,8 @@
         .else
         ldmdb   sp, {r0 - lr}^                  @ get calling r0 - lr
         .endif
+        mov     r0, r0                          @ ARMv5T and earlier require a nop
+                                                @ after ldm {}^
         add     sp, sp, #S_FRAME_SIZE - S_PC
         movs    pc, lr                          @ return & move spsr_svc into cpsr
         .endm
diff --git a/arch/arm/kernel/kgdb.c b/arch/arm/kernel/kgdb.c
index ba8ccfede964..a5b846b9895d 100644
--- a/arch/arm/kernel/kgdb.c
+++ b/arch/arm/kernel/kgdb.c
@@ -9,6 +9,7 @@
  * Authors:  George Davis <davis_g@mvista.com>
  *           Deepak Saxena <dsaxena@plexity.net>
  */
+#include <linux/irq.h>
 #include <linux/kgdb.h>
 #include <asm/traps.h>
 
@@ -158,6 +159,18 @@ static struct undef_hook kgdb_compiled_brkpt_hook = {
         .fn                     = kgdb_compiled_brk_fn
 };
 
+static void kgdb_call_nmi_hook(void *ignored)
+{
+       kgdb_nmicallback(raw_smp_processor_id(), get_irq_regs());
+}
+
+void kgdb_roundup_cpus(unsigned long flags)
+{
+       local_irq_enable();
+       smp_call_function(kgdb_call_nmi_hook, NULL, 0);
+       local_irq_disable();
+}
+
 /**
  *      kgdb_arch_init - Perform any architecture specific initalization.
  *
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 3875d99cc40f..9e70f2053f9a 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -332,7 +332,8 @@ armpmu_reserve_hardware(void)
 
         for (i = 0; i < pmu_irqs->num_irqs; ++i) {
                 err = request_irq(pmu_irqs->irqs[i], armpmu->handle_irq,
-                                  IRQF_DISABLED, "armpmu", NULL);
+                                  IRQF_DISABLED | IRQF_NOBALANCING,
+                                  "armpmu", NULL);
                 if (err) {
                         pr_warning("unable to request IRQ%d for ARM "
                                    "perf counters\n", pmu_irqs->irqs[i]);
@@ -1624,7 +1625,7 @@ enum armv7_counters {
 /*
  * EVTSEL: Event selection reg
  */
-#define ARMV7_EVTSEL_MASK       0x7f            /* Mask for writable bits */
+#define ARMV7_EVTSEL_MASK       0xff            /* Mask for writable bits */
 
 /*
  * SELECT: Counter selection reg
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 57162af53dc9..577543f3857f 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -99,6 +99,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
         *pmd = __pmd((PHYS_OFFSET & PGDIR_MASK) |
                      PMD_TYPE_SECT | PMD_SECT_AP_WRITE);
         flush_pmd_entry(pmd);
+        outer_clean_range(__pa(pmd), __pa(pmd + 1));
 
         /*
          * We need to tell the secondary core where to find
@@ -106,7 +107,8 @@ int __cpuinit __cpu_up(unsigned int cpu)
          */
         secondary_data.stack = task_stack_page(idle) + THREAD_START_SP;
         secondary_data.pgdir = virt_to_phys(pgd);
-        wmb();
+        __cpuc_flush_dcache_area(&secondary_data, sizeof(secondary_data));
+        outer_clean_range(__pa(&secondary_data), __pa(&secondary_data + 1));
 
         /*
          * Now bring the CPU into our world.