From: Andi Kleen <ak@suse.de>
Organization: SUSE Linux Products GmbH, Nuernberg, GF: Markus Rex, HRB 16746 (AG Nuernberg)
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: [PATCH] Introduce compat_u64 and compat_s64 types
Date: Fri, 15 Jun 2007 14:54:28 +0200
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Cc: David Howells <dhowells@redhat.com>, Arnd Bergmann <arnd@arndb.de>,
       Benjamin Herrenschmidt <benh@kernel.crashing.org>,
       David Woodhouse <dwmw2@infradead.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Dave Airlie <airlied@linux.ie>, linux-arch@vger.kernel.org,
       Andrew Morton <akpm@linux-foundation.org>
References: <200706151355.57464.ak@suse.de> <200706151443.13511.ak@suse.de> <20070615135420.7fe2e4c1@the-village.bc.nu>
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On Friday 15 June 2007 14:54:20 Alan Cox wrote:

> > > > The network code requires unaligned accesses to work anyways so if your
> > > > architecture doesn't support them it is already remotely crashable.
> > >
> > > I thought we'd fixed all that.
> > 
> > Did you audit the complete network stack?
> 
> For the parts used by the processors in question yes 

That means? They're expected to run only a subset of the network stack?
Is that expressed in Kconfig? Is it documented that the rest is dangerous?

> people have done 
> that work so using the types without unaligned.

Very brave; we're talking about around half a million lines
of non trivial source code here.

-Andi

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