[PATCH] sparc64: task_stack_page()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c
index 1bc7724..1dc3650 100644 (file)
--- a/arch/sparc64/kernel/process.c
+++ b/arch/sparc64/kernel/process.c
@@ -616,11 +616,11 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
                unsigned long unused,
                struct task_struct *p, struct pt_regs *regs)
 {
-       struct thread_info *t = p->thread_info;
+       struct thread_info *t = task_thread_info(p);
        char *child_trap_frame;
 
        /* Calculate offset to stack_frame & pt_regs */
-       child_trap_frame = ((char *)t) + (THREAD_SIZE - (TRACEREG_SZ+STACKFRAME_SZ));
+       child_trap_frame = task_stack_page(p) + (THREAD_SIZE - (TRACEREG_SZ+STACKFRAME_SZ));
        memcpy(child_trap_frame, (((struct sparc_stackf *)regs)-1), (TRACEREG_SZ+STACKFRAME_SZ));
 
        t->flags = (t->flags & ~((0xffUL << TI_FLAG_CWP_SHIFT) | (0xffUL << TI_FLAG_CURRENT_DS_SHIFT))) |
@@ -845,7 +845,7 @@ unsigned long get_wchan(struct task_struct *task)
             task->state == TASK_RUNNING)
                goto out;
 
-       thread_info_base = (unsigned long) task->thread_info;
+       thread_info_base = (unsigned long) task_stack_page(task);
        bias = STACK_BIAS;
        fp = task_thread_info(task)->ksp + bias;
 

diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index 5570e7b..8d44ae5 100644 (file)
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -1808,7 +1808,7 @@ static void user_instruction_dump (unsigned int __user *pc)
 void show_stack(struct task_struct *tsk, unsigned long *_ksp)
 {
        unsigned long pc, fp, thread_base, ksp;
-       struct thread_info *tp = tsk->thread_info;
+       void *tp = task_stack_page(tsk);
        struct reg_window *rw;
        int count = 0;
 
@@ -1862,7 +1862,7 @@ static inline int is_kernel_stack(struct task_struct *task,
                        return 0;
        }
 
-       thread_base = (unsigned long) task->thread_info;
+       thread_base = (unsigned long) task_stack_page(task);
        thread_end = thread_base + sizeof(union thread_union);
        if (rw_addr >= thread_base &&
            rw_addr < thread_end &&