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Date: Mon, 25 Nov 2013 15:16:54 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Kees Cook <keescook@chromium.org>, linux-kernel@vger.kernel.org
CC: Russell King <linux@arm.linux.org.uk>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
        x86@kernel.org, Shawn Guo <shawn.guo@linaro.org>,
        Olof Johansson <olofj@chromium.org>,
        linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] use -fstack-protector-strong
References: <20131125221400.GA11041@www.outflux.net>
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On 11/25/2013 02:14 PM, Kees Cook wrote:
> Build the kernel with -fstack-protector-strong when it is available
> (gcc 4.9 and later). This increases the coverage of the stack protector
> without the heavy performance hit of -fstack-protector-all.

What is the difference between the various options?

	-hpa