7 files changed, 22 insertions, 9 deletions

diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
index 28be345..abef7517 100644
--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -46,7 +46,6 @@
 
 /* This keeps a track of which one is the crashing cpu. */
 int crashing_cpu = -1;
-static atomic_t cpus_in_crash;
 static int time_to_dump;
 
 #define CRASH_HANDLER_MAX 3
@@ -66,6 +65,7 @@ static int handle_fault(struct pt_regs *regs)
 
 #ifdef CONFIG_SMP
 
+static atomic_t cpus_in_crash;
 void crash_ipi_callback(struct pt_regs *regs)
 {
 	static cpumask_t cpus_state_saved = CPU_MASK_NONE;
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index d4be7bb..3844ca7 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -775,7 +775,7 @@ program_check_common:
 	EXCEPTION_PROLOG_COMMON(0x700, PACA_EXGEN)
 	bl	.save_nvgprs
 	addi	r3,r1,STACK_FRAME_OVERHEAD
-	ENABLE_INTS
+	DISABLE_INTS
 	bl	.program_check_exception
 	b	.ret_from_except
 
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 701d4ac..01e2877 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -118,10 +118,14 @@ static inline notrace void set_soft_enabled(unsigned long enable)
 static inline notrace void decrementer_check_overflow(void)
 {
 	u64 now = get_tb_or_rtc();
-	u64 *next_tb = &__get_cpu_var(decrementers_next_tb);
+	u64 *next_tb;
+
+	preempt_disable();
+	next_tb = &__get_cpu_var(decrementers_next_tb);
 
 	if (now >= *next_tb)
 		set_dec(1);
+	preempt_enable();
 }
 
 notrace void arch_local_irq_restore(unsigned long en)
diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index 3fea368..bedd12e 100644
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -442,8 +442,10 @@ static void __init fixup_port_irq(int index,
 
 	port->irq = virq;
 
+#ifdef CONFIG_SERIAL_8250_FSL
 	if (of_device_is_compatible(np, "fsl,ns16550"))
 		port->handle_irq = fsl8250_handle_irq;
+#endif
 }
 
 static void __init fixup_port_pio(int index,
diff --git a/arch/powerpc/kernel/perf_event.c b/arch/powerpc/kernel/perf_event.c
index 10a140f..64483fd 100644
--- a/arch/powerpc/kernel/perf_event.c
+++ b/arch/powerpc/kernel/perf_event.c
@@ -865,6 +865,7 @@ static void power_pmu_start(struct perf_event *event, int ef_flags)
 {
 	unsigned long flags;
 	s64 left;
+	unsigned long val;
 
 	if (!event->hw.idx || !event->hw.sample_period)
 		return;
@@ -880,7 +881,12 @@ static void power_pmu_start(struct perf_event *event, int ef_flags)
 
 	event->hw.state = 0;
 	left = local64_read(&event->hw.period_left);
-	write_pmc(event->hw.idx, left);
+
+	val = 0;
+	if (left < 0x80000000L)
+		val = 0x80000000L - left;
+
+	write_pmc(event->hw.idx, val);
 
 	perf_event_update_userpage(event);
 	perf_pmu_enable(event->pmu);
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index ebe5766..d817ab0 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -566,12 +566,12 @@ static void show_instructions(struct pt_regs *regs)
 		 */
 		if (!__kernel_text_address(pc) ||
 		     __get_user(instr, (unsigned int __user *)pc)) {
-			printk("XXXXXXXX ");
+			printk(KERN_CONT "XXXXXXXX ");
 		} else {
 			if (regs->nip == pc)
-				printk("<%08x> ", instr);
+				printk(KERN_CONT "<%08x> ", instr);
 			else
-				printk("%08x ", instr);
+				printk(KERN_CONT "%08x ", instr);
 		}
 
 		pc += sizeof(int);
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 517b1d8..9f843cd 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -716,7 +716,6 @@ static int __rtas_suspend_last_cpu(struct rtas_suspend_me_data *data, int wake_w
 	int cpu;
 
 	slb_set_size(SLB_MIN_SIZE);
-	stop_topology_update();
 	printk(KERN_DEBUG "calling ibm,suspend-me on cpu %i\n", smp_processor_id());
 
 	while (rc == H_MULTI_THREADS_ACTIVE && !atomic_read(&data->done) &&
@@ -732,7 +731,6 @@ static int __rtas_suspend_last_cpu(struct rtas_suspend_me_data *data, int wake_w
 		rc = atomic_read(&data->error);
 
 	atomic_set(&data->error, rc);
-	start_topology_update();
 	pSeries_coalesce_init();
 
 	if (wake_when_done) {
@@ -846,6 +844,7 @@ int rtas_ibm_suspend_me(struct rtas_args *args)
 	atomic_set(&data.error, 0);
 	data.token = rtas_token("ibm,suspend-me");
 	data.complete = &done;
+	stop_topology_update();
 
 	/* Call function on all CPUs.  One of us will make the
 	 * rtas call
@@ -858,6 +857,8 @@ int rtas_ibm_suspend_me(struct rtas_args *args)
 	if (atomic_read(&data.error) != 0)
 		printk(KERN_ERR "Error doing global join\n");
 
+	start_topology_update();
+
 	return atomic_read(&data.error);
 }
 #else /* CONFIG_PPC_PSERIES */