[PATCH] amd64: 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>
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@ -451,7 +451,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long rsp,
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struct task_struct *me = current;
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childregs = ((struct pt_regs *)
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(THREAD_SIZE + (unsigned long) p->thread_info)) - 1;
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(THREAD_SIZE + task_stack_page(p))) - 1;
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*childregs = *regs;
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childregs->rax = 0;
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@ -590,7 +590,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
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write_pda(oldrsp, next->userrsp);
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write_pda(pcurrent, next_p);
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write_pda(kernelstack,
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(unsigned long)next_p->thread_info + THREAD_SIZE - PDA_STACKOFFSET);
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task_stack_page(next_p) + THREAD_SIZE - PDA_STACKOFFSET);
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/*
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* Now maybe reload the debug registers
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@ -704,7 +704,7 @@ unsigned long get_wchan(struct task_struct *p)
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if (!p || p == current || p->state==TASK_RUNNING)
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return 0;
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stack = (unsigned long)p->thread_info;
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stack = (unsigned long)task_stack_page(p);
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if (p->thread.rsp < stack || p->thread.rsp > stack+THREAD_SIZE)
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return 0;
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fp = *(u64 *)(p->thread.rsp);
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@ -776,7 +776,7 @@ static int __cpuinit do_boot_cpu(int cpu, int apicid)
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if (c_idle.idle) {
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c_idle.idle->thread.rsp = (unsigned long) (((struct pt_regs *)
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(THREAD_SIZE + (unsigned long) c_idle.idle->thread_info)) - 1);
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(THREAD_SIZE + task_stack_page(c_idle.idle))) - 1);
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init_idle(c_idle.idle, cpu);
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goto do_rest;
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}
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