Merge branch 'drm-forlinus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...

[pandora-kernel.git] / arch / powerpc / kernel / process.c

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 105d560..5770399 100644 (file)
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -201,13 +201,13 @@ int dump_spe(struct pt_regs *regs, elf_vrregset_t *evrregs)
 }
 #endif /* CONFIG_SPE */
 
+#ifndef CONFIG_SMP
 /*
  * If we are doing lazy switching of CPU state (FP, altivec or SPE),
  * and the current task has some state, discard it.
  */
-static inline void discard_lazy_cpu_state(void)
+void discard_lazy_cpu_state(void)
 {
-#ifndef CONFIG_SMP
        preempt_disable();
        if (last_task_used_math == current)
                last_task_used_math = NULL;
@@ -220,9 +220,10 @@ static inline void discard_lazy_cpu_state(void)
                last_task_used_spe = NULL;
 #endif
        preempt_enable();
-#endif /* CONFIG_SMP */
 }
+#endif /* CONFIG_SMP */
 
+#ifdef CONFIG_PPC_MERGE                /* XXX for now */
 int set_dabr(unsigned long dabr)
 {
        if (ppc_md.set_dabr)
@@ -231,6 +232,7 @@ int set_dabr(unsigned long dabr)
        mtspr(SPRN_DABR, dabr);
        return 0;
 }
+#endif
 
 #ifdef CONFIG_PPC64
 DEFINE_PER_CPU(struct cpu_usage, cpu_usage_array);
@@ -424,7 +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());
@@ -503,7 +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 */
@@ -516,7 +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 {
@@ -588,10 +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));
@@ -767,7 +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)