Re: [kernel-hardening] [PATCH] arm: Always use REFCOUNT_FULL

From: Russell King - ARM Linux
Date: Thu Jan 04 2018 - 13:35:30 EST


On Thu, Jan 04, 2018 at 10:32:46AM -0800, Kees Cook wrote:
> On Thu, Jan 4, 2018 at 4:28 AM, Jinbum Park <jinb.park7@xxxxxxxxx> wrote:
> > arm prefers to use REFCOUNT_FULL by default.
> > This enables it for arm.
> >
> > Signed-off-by: Jinbum Park <jinb.park7@xxxxxxxxx>
>
> Acked-by: Kees Cook <keescook@xxxxxxxxxxxx>

I'd help if there was some kind of explanation about this. Not
everyone knows what REFCOUNT_FULL is.

Also, why does "arm" "prefer" to use this? Where does the preference
come from - and why is it a preference but being enforced by the
Kconfig ?

--
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