linux-kernel - Re: [-mm patch] AVR32: Make PROT_WRITE

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Message-ID: <Pine.LNX.4.64.0609131429540.5326@dhcp83-20.boston.redhat.com>
Date:	Wed, 13 Sep 2006 14:30:52 -0400 (EDT)
From:	Jason Baron <jbaron@...hat.com>
To:	Haavard Skinnemoen <hskinnemoen@...el.com>
cc:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org
Subject: Re: [-mm patch] AVR32: Make PROT_WRITE | PROT_EXEC imply PROT_READ


On Wed, 13 Sep 2006, Haavard Skinnemoen wrote:

> The AVR32 MMU has three protection bits for allowing unprivileged
> access, write access and execute access respectively. There is no
> way to deny read access while allowing write or execute access.
> 
> make-prot_write-imply-prot_read.patch in mm does basically the same
> thing for several other architectures. One important difference is
> that this patch makes PROT_EXEC imply PROT_READ as well, but it looks
> like this is the case for most other architectures already.
> 

makes sense to me.

Acked-by: Jason Baron <jbaron@...hat.com>


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