From: keescook@chromium.org (Kees Cook)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] Simple NX lowmem mappings
Date: Thu, 24 Oct 2013 01:45:02 -0700 [thread overview]
Message-ID: <20131024084502.GT4994@outflux.net> (raw)
In-Reply-To: <20131024071258.GB16735@n2100.arm.linux.org.uk>
Hi,
Thanks for starting this work!
Russel said:
> -#define MT_MEMORY 9
> [...]
> + MT_MEMORY,
> + MT_MEMORY_NX,
Instead of these names, let's more fully describe the protections. "NX"
doesn't say anything about RO vs RW. Instead, how about:
MT_MEMORY_RWX (to replace MT_MEMORY)
MT_MEMORY_RW (as the new "NX" in use for this patch)
for the first change? Then as we move forward, we can add:
MT_MEMORY_R
At which point we'll have the three states.
-Kees
--
Kees Cook @outflux.net
next prev parent reply other threads:[~2013-10-24 8:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-24 7:12 [PATCH] Simple NX lowmem mappings Russell King - ARM Linux
2013-10-24 8:45 ` Kees Cook [this message]
2013-10-24 8:55 ` Russell King - ARM Linux
2013-10-24 17:31 ` Nicolas Pitre
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