3 files changed, 23 insertions, 15 deletions

diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 4d6681dce816..c571cd3c1453 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -575,13 +575,19 @@ __secondary_start:
         /* Initialize the kernel stack.  Just a repeat for iSeries.      */
         LOAD_REG_ADDR(r3, current_set)
         sldi    r28,r24,3               /* get current_set[cpu#]         */
-        ldx     r1,r3,r28
-        addi    r1,r1,THREAD_SIZE-STACK_FRAME_OVERHEAD
-        std     r1,PACAKSAVE(r13)
+        ldx     r14,r3,r28
+        addi    r14,r14,THREAD_SIZE-STACK_FRAME_OVERHEAD
+        std     r14,PACAKSAVE(r13)
 
         /* Do early setup for that CPU (stab, slb, hash table pointer) */
         bl      .early_setup_secondary
 
+        /*
+         * setup the new stack pointer, but *don't* use this until
+         * translation is on.
+         */
+        mr      r1, r14
+
         /* Clear backchain so we get nice backtraces */
         li      r7,0
         mtlr    r7
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 6bbd7a604d24..a7a570dcdd57 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -810,6 +810,9 @@ relocate_new_kernel:
         isync
         sync
 
+        mfspr   r3, SPRN_PIR /* current core we are running on */
+        mr      r4, r5 /* load physical address of chunk called */
+
         /* jump to the entry point, usually the setup routine */
         mtlr    r5
         blrl
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index ce53dfa7130d..8533b3b83f5d 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -577,20 +577,11 @@ void timer_interrupt(struct pt_regs * regs)
          * some CPUs will continuue to take decrementer exceptions */
         set_dec(DECREMENTER_MAX);
 
-#ifdef CONFIG_PPC32
+#if defined(CONFIG_PPC32) && defined(CONFIG_PMAC)
         if (atomic_read(&ppc_n_lost_interrupts) != 0)
                 do_IRQ(regs);
 #endif
 
-        now = get_tb_or_rtc();
-        if (now < decrementer->next_tb) {
-                /* not time for this event yet */
-                now = decrementer->next_tb - now;
-                if (now <= DECREMENTER_MAX)
-                        set_dec((int)now);
-                trace_timer_interrupt_exit(regs);
-                return;
-        }
         old_regs = set_irq_regs(regs);
         irq_enter();
 
@@ -606,8 +597,16 @@ void timer_interrupt(struct pt_regs * regs)
                 get_lppaca()->int_dword.fields.decr_int = 0;
 #endif
 
-        if (evt->event_handler)
-                evt->event_handler(evt);
+        now = get_tb_or_rtc();
+        if (now >= decrementer->next_tb) {
+                decrementer->next_tb = ~(u64)0;
+                if (evt->event_handler)
+                        evt->event_handler(evt);
+        } else {
+                now = decrementer->next_tb - now;
+                if (now <= DECREMENTER_MAX)
+                        set_dec((int)now);
+        }
 
 #ifdef CONFIG_PPC_ISERIES
         if (firmware_has_feature(FW_FEATURE_ISERIES) && hvlpevent_is_pending())