linux-kernel - Re: [PATCH 00/18] Make common x86 arch area for i386 and x86_64

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Date:	Thu, 15 Mar 2007 12:57:19 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Martin Bligh <mbligh@...igh.org>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Chris Wright <chrisw@...s-sol.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Glauber de Oliveira Costa <glommer@...il.com>
Subject: Re: [PATCH 00/18] Make common x86 arch area for i386 and x86_64 -
	Take 2

On Thu, 2007-03-15 at 12:47 -0400, Steven Rostedt wrote:
> On Thu, 2007-03-15 at 17:06 +0100, Andi Kleen wrote:
> 
> > Well I just see a lot of pain from these patches but I doubt 
> > they will avoid any bugs. If people don't compile test both
> > archs they will always likely break on another. There are lots
> > of subtle dependencies that are not expressed in the pathname
> > even after this intrusive operation (e.g. in the includes).

[...]

> With the proposed patch set, what can break i386 by modifying something
> in arch/x86_64, or what can break x86_64 by modifying something in
> arch/i386? (not counting the unfinished pci shared code).

Oops, sorry, you did say "in the includes".  Yeah, that holds the same
crap that I'm talking about. 

$ cat include/asm-i386/stacktrace.h
#include <asm-x86_64/stacktrace.h>

Which isn't something that I would like to stay either. So it's just
something else that needs to be fixed. Not something that will
circumvent what the current patch set is trying to do.

-- Steve


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