From: Jan Beulich <JBeulich@novell.com>
Date: Fri, 27 Nov 2009 15:04:58 +0000 (+0000)
Subject: x86/alternatives: Check replacementlen <= instrlen at build time
X-Git-Tag: v2.6.33-rc1~396^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=01be50a308be466e122c3a8b3d535f1b673ecbd2;p=pandora-kernel.git

x86/alternatives: Check replacementlen <= instrlen at build time

Having run into the run-(boot-)time check a couple of times lately,
I finally took time to find a build-time check so that one doesn't
need to analyze the register/stack dump and resolve this (through
manual lookup in vmlinux) to the offending construct.

The assembler will emit a message like "Error: value of <num> too
large for field of 1 bytes at <offset>", which while not pointing
out the source location still makes analysis quite a bit easier.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <4B0FF8AA0200007800022703@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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