linux-kernel - Re: [PATCH 1/2] x86: unify pt

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Message-Id: <1200622089.5724.102.camel@brick>
Date:	Thu, 17 Jan 2008 18:08:09 -0800
From:	Harvey Harrison <harvey.harrison@...il.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] x86: unify pt_regs accessors ptrace.h

On Thu, 2008-01-17 at 20:56 -0500, H. Peter Anvin wrote:
> Harvey Harrison wrote:
> > Unify the definiton of:
> > v8086_mode
> > user_mode
> > user_mode_vm
> > stack_pointer
> > instruction_pointer
> > frame_pointer
> > 
> > in ptrace.h to make it clear where the differences are between
> > 32 and 64 bit.  Changes macros to static inlines as well.
> > 
> 
> Can you put a comment on stack_pointer() that it applies to a 
> kernel-mode pt_regs only?

How about a follow-on patch that picks a better name and adds the
comment?  I'd like to leave this as a movement-only patch.  Once we
decide on a name I'll do the rename/comment.  It seems like there are
very few users currently (oprofile/backtrace.c only?).

Then I'll also change the kprobes code to use this instead of their
stack_addr helper.

Harvey

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