From: Rabin Vincent <rabin@rab.in>
Date: Thu, 24 Apr 2014 21:28:57 +0000 (+0200)
Subject: arm: use fixmap for text patching when text is RO
X-Git-Tag: omap-for-v3.19/fixes-rc1~105^2^2^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ab0615e2d6fb074764a3e4d05f1326fa2fdb4627;p=pandora-kernel.git

arm: use fixmap for text patching when text is RO

Use fixmaps for text patching when the kernel text is read-only,
inspired by x86.  This makes jump labels and kprobes work with the
currently available CONFIG_DEBUG_SET_MODULE_RONX and the upcoming
CONFIG_DEBUG_RODATA options.

Signed-off-by: Rabin Vincent <rabin@rab.in>
[kees: fixed up for merge with "arm: use generic fixmap.h"]
[kees: added parse acquire/release annotations to pass C=1 builds]
[kees: always use stop_machine to keep TLB flushing local]
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
---

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