linux-kernel - Re: [PATCH x86/mm 06/11] x86 ptrace arch merge

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Date:	Thu, 29 Nov 2007 13:33:56 -0800 (PST)
From:	Roland McGrath <roland@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH x86/mm 06/11] x86 ptrace arch merge

> > --- a/arch/x86/kernel/ptrace.c
> > +++ b/arch/x86/kernel/ptrace.c
> > @@ -461,12 +461,13 @@ static int ptrace_set_debugreg(struct task_struct *child,
> >  void ptrace_disable(struct task_struct *child)
> >  {
> >  	user_disable_single_step(child);
> > +#ifdef TIF_SYSCALL_EMU
> >  	clear_tsk_thread_flag(child, TIF_SYSCALL_EMU);
> > +#endif
> 
> Is TIF_SYSCALL_EMU ever undefined here?

Yes, it not defined on CONFIG_X86_64.
(That is something to be addressed later on.)


Thanks,
Roland
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