4 files changed, 15 insertions, 9 deletions

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index c3f58f2f9f52..5deaab3090b4 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -187,6 +187,7 @@ void fixup_irqs(cpumask_t map)
 
 void do_IRQ(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         unsigned int irq;
 #ifdef CONFIG_IRQSTACKS
         struct thread_info *curtp, *irqtp;
@@ -230,18 +231,19 @@ void do_IRQ(struct pt_regs *regs)
                                 handler = &__do_IRQ;
                         irqtp->task = curtp->task;
                         irqtp->flags = 0;
-                        call_handle_irq(irq, desc, regs, irqtp, handler);
+                        call_handle_irq(irq, desc, irqtp, handler);
                         irqtp->task = NULL;
                         if (irqtp->flags)
                                 set_bits(irqtp->flags, &curtp->flags);
                 } else
 #endif
-                        generic_handle_irq(irq, regs);
+                        generic_handle_irq(irq);
         } else if (irq != NO_IRQ_IGNORE)
                 /* That's not SMP safe ... but who cares ? */
                 ppc_spurious_interrupts++;
 
         irq_exit();
+        set_irq_regs(old_regs);
 
 #ifdef CONFIG_PPC_ISERIES
         if (get_lppaca()->int_dword.fields.decr_int) {
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 41521b30c3cd..c70e20708a1f 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -52,12 +52,12 @@ _GLOBAL(call_do_softirq)
         blr
 
 _GLOBAL(call_handle_irq)
-        ld      r8,0(r7)
+        ld      r8,0(r6)
         mflr    r0
         std     r0,16(r1)
         mtctr   r8
-        stdu    r1,THREAD_SIZE-112(r6)
-        mr      r1,r6
+        stdu    r1,THREAD_SIZE-112(r5)
+        mr      r1,r5
         bctrl
         ld      r1,0(r1)
         ld      r0,16(r1)
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 6a9bc9ce54e0..35c6309bdb76 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -115,7 +115,7 @@ void __devinit smp_generic_kick_cpu(int nr)
 }
 #endif
 
-void smp_message_recv(int msg, struct pt_regs *regs)
+void smp_message_recv(int msg)
 {
         switch(msg) {
         case PPC_MSG_CALL_FUNCTION:
@@ -127,11 +127,11 @@ void smp_message_recv(int msg, struct pt_regs *regs)
                 break;
         case PPC_MSG_DEBUGGER_BREAK:
                 if (crash_ipi_function_ptr) {
-                        crash_ipi_function_ptr(regs);
+                        crash_ipi_function_ptr(get_irq_regs());
                         break;
                 }
 #ifdef CONFIG_DEBUGGER
-                debugger_ipi(regs);
+                debugger_ipi(get_irq_regs());
                 break;
 #endif /* CONFIG_DEBUGGER */
                 /* FALLTHROUGH */
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 85b9244a098c..d210d0a5006b 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -51,6 +51,7 @@
 #include <linux/rtc.h>
 #include <linux/jiffies.h>
 #include <linux/posix-timers.h>
+#include <linux/irq.h>
 
 #include <asm/io.h>
 #include <asm/processor.h>
@@ -643,6 +644,7 @@ static void iSeries_tb_recal(void)
  */
 void timer_interrupt(struct pt_regs * regs)
 {
+        struct pt_regs *old_regs;
         int next_dec;
         int cpu = smp_processor_id();
         unsigned long ticks;
@@ -653,9 +655,10 @@ void timer_interrupt(struct pt_regs * regs)
                 do_IRQ(regs);
 #endif
 
+        old_regs = set_irq_regs(regs);
         irq_enter();
 
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
         calculate_steal_time();
 
 #ifdef CONFIG_PPC_ISERIES
@@ -715,6 +718,7 @@ void timer_interrupt(struct pt_regs * regs)
 #endif
 
         irq_exit();
+        set_irq_regs(old_regs);
 }
 
 void wakeup_decrementer(void)