From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964833AbWACVLJ (ORCPT ); Tue, 3 Jan 2006 16:11:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964820AbWACVHw (ORCPT ); Tue, 3 Jan 2006 16:07:52 -0500 Received: from zeniv.linux.org.uk ([195.92.253.2]:45967 "EHLO ZenIV.linux.org.uk") by vger.kernel.org with ESMTP id S932546AbWACVHm (ORCPT ); Tue, 3 Jan 2006 16:07:42 -0500 To: torvalds@osdl.org Subject: [PATCH 40/50] powerpc: task_stack_page() Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Message-Id: From: Al Viro Date: Tue, 03 Jan 2006 21:07:39 +0000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org References: <20060103210515.5135@ftp.linux.org.uk> In-Reply-To: <20060103210515.5135@ftp.linux.org.uk> Signed-off-by: Al Viro --- arch/powerpc/kernel/process.c | 10 ++++------ arch/ppc/kernel/process.c | 8 ++++---- 2 files changed, 8 insertions(+), 10 deletions(-) 1cf48f33ad88078b946ddf907f87ec1f313432c7 diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index bc03526..1f816f0 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -503,7 +503,7 @@ int copy_thread(int nr, unsigned long cl { 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 */ @@ -588,10 +588,8 @@ void start_thread(struct pt_regs *regs, * 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 +765,7 @@ 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/ppc/kernel/process.c b/arch/ppc/kernel/process.c index c3555a8..a76b504 100644 --- a/arch/ppc/kernel/process.c +++ b/arch/ppc/kernel/process.c @@ -482,7 +482,7 @@ copy_thread(int nr, unsigned long clone_ { 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; unsigned long childframe; CHECK_FULL_REGS(regs); @@ -702,8 +702,8 @@ void show_stack(struct task_struct *tsk, sp = tsk->thread.ksp; } - prev_sp = (unsigned long) (tsk->thread_info + 1); - stack_top = (unsigned long) tsk->thread_info + THREAD_SIZE; + prev_sp = (unsigned long) end_of_stack(tsk); + stack_top = (unsigned long) task_stack_page(tsk) + THREAD_SIZE; while (count < 16 && sp > prev_sp && sp < stack_top && (sp & 3) == 0) { if (count == 0) { printk("Call trace:"); @@ -832,7 +832,7 @@ void __init ll_puts(const char *s) unsigned long get_wchan(struct task_struct *p) { unsigned long ip, sp; - unsigned long stack_page = (unsigned long) p->thread_info; + unsigned long stack_page = (unsigned long) task_stack_page(p); int count = 0; if (!p || p == current || p->state == TASK_RUNNING) return 0; -- 0.99.9.GIT