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Date: Thu, 19 May 2016 16:30:23 +1000
From: Andrew Donnellan <andrew.donnellan@....ibm.com>
To: Michael Ellerman <mpe@...erman.id.au>, Emese Revfy <re.emese@...il.com>,
kernel-hardening@...ts.openwall.com
Cc: linux-kbuild@...r.kernel.org, pageexec@...email.hu, spender@...ecurity.net,
mmarek@...e.com, keescook@...omium.org, linux@...musvillemoes.dk,
fengguang.wu@...el.com, dvyukov@...gle.com,
linux-kernel@...r.kernel.org, david.brown@...aro.org,
yamada.masahiro@...ionext.com,
linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
Daniel Axtens <dja@...ens.net>
Subject: Re: [PATCH v8 2/4] GCC plugin infrastructure
On 19/05/16 16:22, Michael Ellerman wrote:
>> Did you test the plugins with all gcc versions (4.5-6)?
>
> What's the concern about gcc versions? Just not breaking the build on old
> compilers?
> I'm pretty sure powerpc big endian still builds with gcc 4.4.
gcc's plugin support only landed in 4.5, so we don't care about <=4.4.
> However if Andrew's only tested on little endian, then that select should be
> guarded with an "if CPU_LITTLE_ENDIAN". And to build LE you need gcc >= 4.9.
I'm going to give BE a test too just to be sure.
--
Andrew Donnellan OzLabs, ADL Canberra
andrew.donnellan@....ibm.com IBM Australia Limited
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