linux-kernel - Re: [PATCH x86/mm 6/6] x86-64 ia32 ptrace get/putreg32 current task

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Message-ID: <alpine.LFD.0.9999.0711291434270.8458@woody.linux-foundation.org>
Date:	Thu, 29 Nov 2007 14:34:52 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Roland McGrath <roland@...hat.com>
cc:	Chuck Ebbert <cebbert@...hat.com>,
	Andrew Morton <akpm@...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 6/6] x86-64 ia32 ptrace get/putreg32 current
 task



On Thu, 29 Nov 2007, Roland McGrath wrote:
> 
> Um, really?  This is x86-64 code.  AIUI those values don't have any effect
> at all in 64-bit mode (as the kernel is).  I haven't found any code in
> entry_64.S or ia32entry.S that touches them.  __switch_to uses direct
> access to the segment registers just as I've done.

Yes, you're right, I just looked at the ia32 part and didn't read your 
patches right.

		Linus
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