1 files changed, 8 insertions, 8 deletions

diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 97cedcd6c9b4..1111fcec7673 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -278,8 +278,12 @@ exception_marker:
         beq-    1f;                                                        \
         ld      r1,PACAKSAVE(r13);      /* kernel stack to use          */ \
 1:      cmpdi   cr1,r1,0;               /* check if r1 is in userspace  */ \
-        bge-    cr1,bad_stack;          /* abort if it is               */ \
-        std     r9,_CCR(r1);            /* save CR in stackframe        */ \
+        bge-    cr1,2f;                 /* abort if it is               */ \
+        b       3f;                                                        \
+2:      li      r1,(n);                 /* will be reloaded later       */ \
+        sth     r1,PACA_TRAP_SAVE(r13);                                    \
+        b       bad_stack;                                                 \
+3:      std     r9,_CCR(r1);            /* save CR in stackframe        */ \
         std     r11,_NIP(r1);           /* save SRR0 in stackframe      */ \
         std     r12,_MSR(r1);           /* save SRR1 in stackframe      */ \
         std     r10,0(r1);              /* make stack chain pointer     */ \
@@ -940,6 +944,8 @@ bad_stack:
         SAVE_2GPRS(7,r1)
         SAVE_10GPRS(12,r1)
         SAVE_10GPRS(22,r1)
+        lhz     r12,PACA_TRAP_SAVE(r13)
+        std     r12,_TRAP(r1)
         addi    r11,r1,INT_FRAME_SIZE
         std     r11,0(r1)
         li      r12,0
@@ -1555,7 +1561,6 @@ _GLOBAL(generic_secondary_smp_init)
         
         /* turn on 64-bit mode */
         bl      .enable_64b_mode
-        isync
 
         /* Set up a paca value for this processor. Since we have the
          * physical cpu id in r24, we need to search the pacas to find
@@ -1735,10 +1740,6 @@ _STATIC(__boot_from_prom)
         /* We never return */
         trap
 
-/*
- * At this point, r3 contains the physical address we are running at,
- * returned by prom_init()
- */
 _STATIC(__after_prom_start)
 
 /*
@@ -1851,7 +1852,6 @@ __secondary_start_pmac_0:
 _GLOBAL(pmac_secondary_start)
         /* turn on 64-bit mode */
         bl      .enable_64b_mode
-        isync
 
         /* Copy some CPU settings from CPU 0 */
         bl      .__restore_cpu_ppc970