[PATCH] alpha: task_stack_page()
use task_stack_page() for accesses to stack page of task in alpha-specific parts of tree 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>
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@ -276,7 +276,7 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
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{
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extern void ret_from_fork(void);
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struct thread_info *childti = p->thread_info;
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struct thread_info *childti = task_thread_info(p);
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struct pt_regs * childregs;
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struct switch_stack * childstack, *stack;
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unsigned long stack_offset, settls;
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@ -285,7 +285,7 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
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if (!(regs->ps & 8))
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stack_offset = (PAGE_SIZE-1) & (unsigned long) regs;
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childregs = (struct pt_regs *)
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(stack_offset + PAGE_SIZE + (long) childti);
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(stack_offset + PAGE_SIZE + task_stack_page(p));
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*childregs = *regs;
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settls = regs->r20;
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@ -492,7 +492,7 @@ out:
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unsigned long
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thread_saved_pc(task_t *t)
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{
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unsigned long base = (unsigned long)t->thread_info;
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unsigned long base = (unsigned long)task_stack_page(t);
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unsigned long fp, sp = task_thread_info(t)->pcb.ksp;
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if (sp > base && sp+6*8 < base + 16*1024) {
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@ -110,7 +110,7 @@ get_reg_addr(struct task_struct * task, unsigned long regno)
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zero = 0;
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addr = &zero;
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} else {
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addr = (void *)task->thread_info + regoff[regno];
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addr = task_stack_page(task) + regoff[regno];
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}
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return addr;
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}
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@ -76,7 +76,7 @@ struct switch_stack {
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extern void show_regs(struct pt_regs *);
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#define alpha_task_regs(task) \
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((struct pt_regs *) ((long) (task)->thread_info + 2*PAGE_SIZE) - 1)
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((struct pt_regs *) (task_stack_page(task) + 2*PAGE_SIZE) - 1)
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#define force_successful_syscall_return() (alpha_task_regs(current)->r0 = 0)
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