5 files changed, 13 insertions, 15 deletions

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 9101358cc6b3..57703994a063 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -426,7 +426,7 @@ void show_regs(struct pt_regs * regs)
         if (trap == 0x300 || trap == 0x600)
                 printk("DAR: "REG", DSISR: "REG"\n", regs->dar, regs->dsisr);
         printk("TASK = %p[%d] '%s' THREAD: %p",
-               current, current->pid, current->comm, current->thread_info);
+               current, current->pid, current->comm, task_thread_info(current));
 
 #ifdef CONFIG_SMP
         printk(" CPU: %d", smp_processor_id());
@@ -505,7 +505,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
 {
         struct pt_regs *childregs, *kregs;
         extern void ret_from_fork(void);
-        unsigned long sp = (unsigned long)p->thread_info + THREAD_SIZE;
+        unsigned long sp = (unsigned long)task_stack_page(p) + THREAD_SIZE;
 
         CHECK_FULL_REGS(regs);
         /* Copy registers */
@@ -518,7 +518,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
 #ifdef CONFIG_PPC32
                 childregs->gpr[2] = (unsigned long) p;
 #else
-                clear_ti_thread_flag(p->thread_info, TIF_32BIT);
+                clear_tsk_thread_flag(p, TIF_32BIT);
 #endif
                 p->thread.regs = NULL;  /* no user register state */
         } else {
@@ -590,10 +590,8 @@ void start_thread(struct pt_regs *regs, unsigned long start, unsigned long sp)
          * set.  Do it now.
          */
         if (!current->thread.regs) {
-                unsigned long childregs = (unsigned long)current->thread_info +
-                                                THREAD_SIZE;
-                childregs -= sizeof(struct pt_regs);
-                current->thread.regs = (struct pt_regs *)childregs;
+                struct pt_regs *regs = task_stack_page(current) + THREAD_SIZE;
+                current->thread.regs = regs - 1;
         }
 
         memset(regs->gpr, 0, sizeof(regs->gpr));
@@ -769,7 +767,7 @@ out:
 static int validate_sp(unsigned long sp, struct task_struct *p,
                        unsigned long nbytes)
 {
-        unsigned long stack_page = (unsigned long)p->thread_info;
+        unsigned long stack_page = (unsigned long)task_stack_page(p);
 
         if (sp >= stack_page + sizeof(struct thread_struct)
             && sp <= stack_page + THREAD_SIZE - nbytes)
diff --git a/arch/powerpc/kernel/ptrace-common.h b/arch/powerpc/kernel/ptrace-common.h
index b1babb729673..5ccbdbe0d5c9 100644
--- a/arch/powerpc/kernel/ptrace-common.h
+++ b/arch/powerpc/kernel/ptrace-common.h
@@ -62,7 +62,7 @@ static inline void set_single_step(struct task_struct *task)
         struct pt_regs *regs = task->thread.regs;
         if (regs != NULL)
                 regs->msr |= MSR_SE;
-        set_ti_thread_flag(task->thread_info, TIF_SINGLESTEP);
+        set_tsk_thread_flag(task, TIF_SINGLESTEP);
 }
 
 static inline void clear_single_step(struct task_struct *task)
@@ -70,7 +70,7 @@ static inline void clear_single_step(struct task_struct *task)
         struct pt_regs *regs = task->thread.regs;
         if (regs != NULL)
                 regs->msr &= ~MSR_SE;
-        clear_ti_thread_flag(task->thread_info, TIF_SINGLESTEP);
+        clear_tsk_thread_flag(task, TIF_SINGLESTEP);
 }
 
 #ifdef CONFIG_ALTIVEC
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index d381ec90b759..c8458c531b25 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -338,8 +338,8 @@ static void __init smp_create_idle(unsigned int cpu)
 #ifdef CONFIG_PPC64
         paca[cpu].__current = p;
 #endif
-        current_set[cpu] = p->thread_info;
-        p->thread_info->cpu = cpu;
+        current_set[cpu] = task_thread_info(p);
+        task_thread_info(p)->cpu = cpu;
 }
 
 void __init smp_prepare_cpus(unsigned int max_cpus)
@@ -375,7 +375,7 @@ void __devinit smp_prepare_boot_cpu(void)
 #ifdef CONFIG_PPC64
         paca[boot_cpuid].__current = current;
 #endif
-        current_set[boot_cpuid] = current->thread_info;
+        current_set[boot_cpuid] = task_thread_info(current);
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
diff --git a/arch/powerpc/platforms/cell/smp.c b/arch/powerpc/platforms/cell/smp.c
index de96eadf419d..bdf6c5fe58c0 100644
--- a/arch/powerpc/platforms/cell/smp.c
+++ b/arch/powerpc/platforms/cell/smp.c
@@ -86,7 +86,7 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
         pcpu = get_hard_smp_processor_id(lcpu);
 
         /* Fixup atomic count: it exited inside IRQ handler. */
-        paca[lcpu].__current->thread_info->preempt_count        = 0;
+        task_thread_info(paca[lcpu].__current)->preempt_count   = 0;
 
         /*
          * If the RTAS start-cpu token does not exist then presume the
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index e4d017dd5ef3..8e6b1ed1396e 100644
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -282,7 +282,7 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
         pcpu = get_hard_smp_processor_id(lcpu);
 
         /* Fixup atomic count: it exited inside IRQ handler. */
-        paca[lcpu].__current->thread_info->preempt_count        = 0;
+        task_thread_info(paca[lcpu].__current)->preempt_count   = 0;
 
         /* 
          * If the RTAS start-cpu token does not exist then presume the