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Date: Mon, 14 Aug 2017 16:26:32 +0200
From: Arnd Bergmann <arnd@...db.de>
To: Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc: Kernel Hardening <kernel-hardening@...ts.openwall.com>,
Linux ARM <linux-arm-kernel@...ts.infradead.org>, Nicolas Pitre <nico@...aro.org>,
Russell King <linux@...linux.org.uk>, Kees Cook <keescook@...omium.org>,
Thomas Garnier <thgarnie@...gle.com>, Marc Zyngier <marc.zyngier@....com>,
Mark Rutland <mark.rutland@....com>, Tony Lindgren <tony@...mide.com>,
Matt Fleming <matt@...eblueprint.co.uk>, Dave Martin <dave.martin@....com>
Subject: Re: [PATCH 01/30] asm-generic: add .data.rel.ro sections to __ro_after_init
On Mon, Aug 14, 2017 at 2:53 PM, Ard Biesheuvel
<ard.biesheuvel@...aro.org> wrote:
> When running in PIC mode, the compiler will emit const structures
> containing runtime relocatable quantities into .data.rel.ro.* sections,
> so that the linker can be smart about placing them together in a segment
> that is read-write initially, and is remapped read-only afterwards. This
> is exactly what __ro_after_init aims to provide, so move these sections
> together.
>
> Cc: Arnd Bergmann <arnd@...db.de>
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@...aro.org>
Acked-by: Arnd Bergmann <arnd@...db.de>
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