linux-kernel - Re: [PATCH 00/23] tracehook

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Date:	Fri, 18 Jul 2008 13:24:33 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	David Miller <davem@...emloft.net>
Cc:	roland@...hat.com, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org, mingo@...e.hu,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/23] tracehook

David Miller <davem@...emloft.net> writes:
>
> The other arch's with compat support will have this same exact issue.

On x86-64 the sign extension is in C code, so it would be somewhat more
complicated to do a generic table or converter.

I think the tracer will always need to know if it's tracing 32bit
or 64bit though, because the interfaces are not always 100% compatible.
e.g. I suspect any serious one will need to look at memory 
arguments for some cases and those generally differ.

-Andi
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