Message-ID: <565606C1.8080507@zytor.com>
Date: Wed, 25 Nov 2015 11:06:41 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Kees Cook <keescook@chromium.org>
CC: Mathias Krause <minipli@googlemail.com>,
        "kernel-hardening@lists.openwall.com" 
	<kernel-hardening@lists.openwall.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Andy Lutomirski <luto@amacapital.net>, Ingo Molnar <mingo@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>, x86-ml <x86@kernel.org>,
        Arnd Bergmann <arnd@arndb.de>, Michael Ellerman <mpe@ellerman.id.au>,
        linux-arch <linux-arch@vger.kernel.org>,
        PaX Team <pageexec@freemail.hu>, Emese Revfy <re.emese@gmail.com>
Subject: Re: [kernel-hardening] [PATCH 0/2] introduce post-init read-only
 memory
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On 11/25/2015 10:54 AM, Kees Cook wrote:
>>
>> We should not wait for compile-time support, that doesn't make any
>> sense.  What would be useful would be a way to override this on the
>> command line -- that way, if disabling RO or RO-after-init memory makes
>> something work, we have an instant diagnosis.
> 
> Seems easiest to have an arg just skip calling mark_rodata_ro(). I can add that.
> 

Exactly.

	-hpa


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