linux-kernel - Re: [PATCH] use -fstack-protector-strong

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Message-ID: <5293DA66.6050902@zytor.com>
Date:	Mon, 25 Nov 2013 15:16:54 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Kees Cook <keescook@...omium.org>, linux-kernel@...r.kernel.org
CC:	Russell King <linux@....linux.org.uk>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
	Shawn Guo <shawn.guo@...aro.org>,
	Olof Johansson <olofj@...omium.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] use -fstack-protector-strong

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


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