Date: Tue, 4 Nov 2014 20:18:59 +0000
From: Leif Lindholm <leif.lindholm@linaro.org>
To: Kees Cook <keescook@chromium.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
        "linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
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        Russell King - ARM Linux <linux@arm.linux.org.uk>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will.deacon@arm.com>,
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        paulus@samba.org, mpe@ellerman.id.au,
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        linux390@de.ibm.com, Chris Metcalf <cmetcalf@tilera.com>,
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        Arnd Bergmann <arnd@arndb.de>, Greg KH <gregkh@linuxfoundation.org>,
        Andy Lutomirski <luto@amacapital.net>, Oleg Nesterov <oleg@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>, dave.long@linaro.org,
        Christoph Hellwig <hch@infradead.org>,
        Arjan van de Ven <arjan@linux.intel.com>
Subject: Re: [RFC PATCH] make CONFIG_STRICT_DEVMEM a core non-debug feature
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On Tue, Nov 04, 2014 at 12:02:32PM -0800, Kees Cook wrote:
> > I considered doing that, but didn't want to risk listing too many
> > details of one architecture, and too few of others.
> 
> Well, the others only say "memory mapped peripherals", so that's what
> I was suggesting adding the x86 language: it was the most detailed
> about what that would really mean to the end-user.

The problem is that this currently isn't strictly speaking true for
some architectures (at least not arm*). Without a standardised memory
map, we are exposing mapping anything not system RAM.

(Patches related to that will follow later this month.)

/
    Leif
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