1 files changed, 19 insertions, 12 deletions

diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 6b52cce872be..b0994050024f 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -277,16 +277,21 @@ void __init early_setup(unsigned long dt_ptr)
         DBG("Found, Initializing memory management...\n");
 
         /*
-         * Initialize stab / SLB management
+         * Initialize the MMU Hash table and create the linear mapping
+         * of memory. Has to be done before stab/slb initialization as
+         * this is currently where the page size encoding is obtained
          */
-        if (!firmware_has_feature(FW_FEATURE_ISERIES))
-                stab_initialize(lpaca->stab_real);
+        htab_initialize();
 
         /*
-         * Initialize the MMU Hash table and create the linear mapping
-         * of memory
+         * Initialize stab / SLB management except on iSeries
          */
-        htab_initialize();
+        if (!firmware_has_feature(FW_FEATURE_ISERIES)) {
+                if (cpu_has_feature(CPU_FTR_SLB))
+                        slb_initialize();
+                else
+                        stab_initialize(lpaca->stab_real);
+        }
 
         DBG(" <- early_setup()\n");
 }
@@ -552,10 +557,12 @@ static void __init irqstack_early_init(void)
          * SLB misses on them.
          */
         for_each_cpu(i) {
-                softirq_ctx[i] = (struct thread_info *)__va(lmb_alloc_base(THREAD_SIZE,
-                                        THREAD_SIZE, 0x10000000));
-                hardirq_ctx[i] = (struct thread_info *)__va(lmb_alloc_base(THREAD_SIZE,
-                                        THREAD_SIZE, 0x10000000));
+                softirq_ctx[i] = (struct thread_info *)
+                        __va(lmb_alloc_base(THREAD_SIZE,
+                                            THREAD_SIZE, 0x10000000));
+                hardirq_ctx[i] = (struct thread_info *)
+                        __va(lmb_alloc_base(THREAD_SIZE,
+                                            THREAD_SIZE, 0x10000000));
         }
 }
 #else
@@ -583,8 +590,8 @@ static void __init emergency_stack_init(void)
         limit = min(0x10000000UL, lmb.rmo_size);
 
         for_each_cpu(i)
-                paca[i].emergency_sp = __va(lmb_alloc_base(PAGE_SIZE, 128,
-                                                limit)) + PAGE_SIZE;
+                paca[i].emergency_sp =
+                __va(lmb_alloc_base(HW_PAGE_SIZE, 128, limit)) + HW_PAGE_SIZE;
 }
 
 /*