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Date: Thu, 1 Jul 2004 05:04:08 +0100
From: Jamie Lokier <jamie@shareable.org>
To: Kyle Moffett <mrmacman_g4@mac.com>
Cc: William Lee Irwin III <wli@holomorphy.com>,
       Michael Kerrisk <michael.kerrisk@gmx.net>, linux-kernel@vger.kernel.org
Subject: Re: Table of mmap PROT_* implementations by architecture
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References: <20040701033620.GB1564@mail.shareable.org> <0B128D6C-CB13-11D8-947A-000393ACC76E@mac.com>
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Kyle Moffett wrote:
> >(1) - In kernel, maybe these pages are readable using "write()"?
> >      In each case that is labelled, I'm not sure from reading the code.
> >      (Pages are always readable using ptrace(), that's ok, but write()
> >      and other kernel reads shouldn't be able to read PROT_NONE pages).
>
> This is wrong for PPC32 and PPC64, see the email written earlier today:

Ah, bollocks!  I'd already updated the file from your earlier mail,
but didn't propagate that change to the email before sending it.

Thanks for pointing it out,
-- Jamie