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From: Paul Mackerras <paulus@samba.org>
To: Andrew Morton <akpm@osdl.org>
Cc: Kyle McMartin <kyle@parisc-linux.org>,
	torvalds@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Generic is_compat_task helper
Date: Fri, 17 Feb 2006 16:58:46 +1100	[thread overview]
Message-ID: <17397.26134.234593.858037@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <20060216214939.78aebcbb.akpm@osdl.org>

Andrew Morton writes:

> What continues to bug me about this (in a high-level hand-wavy sort of way)
> is that this is an attribute of the mm_struct, not of the task_struct.

It's not only an attribute of the mm_struct; compat-ness doesn't just
imply a restricted address space, it implies a different setting of
the processor when the task is running, a different set of system
calls, different interpretation of syscall arguments, etc.

Paul.

  reply	other threads:[~2006-02-17  6:00 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-02-17  2:52 Kyle McMartin
2006-02-17  5:49 ` Andrew Morton
2006-02-17  5:58   ` Paul Mackerras [this message]
2006-02-17  6:01   ` Stephen Rothwell
2006-02-17  7:03   ` David S. Miller
2006-02-17  7:45     ` Issue in using more number of devices with BFS setup in AS4 Srikanth Venkataraman
2006-02-17 14:11   ` [PATCH] Generic is_compat_task helper Kyle McMartin

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