linux-kernel - Re: [PATCH 03/10] jump label v11: base patch

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Message-ID: <20100921185513.GA22929@dumpdata.com>
Date:	Tue, 21 Sep 2010 14:55:13 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Jason Baron <jbaron@...hat.com>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu,
	mathieu.desnoyers@...ymtl.ca, hpa@...or.com, tglx@...utronix.de,
	rostedt@...dmis.org, andi@...stfloor.org, roland@...hat.com,
	rth@...hat.com, mhiramat@...hat.com, fweisbec@...il.com,
	avi@...hat.com, davem@...emloft.net, vgoyal@...hat.com,
	sam@...nborg.org, tony@...eyournoodle.com
Subject: Re: [PATCH 03/10] jump label v11: base patch

> > +early_initcall(init_jump_label);
> 
> Is there any danger of not patching the instructions with NOPs before
> early_initcall is called? I guess for your uses (tracing) there won't.
> And even if there are not patched it will just call the function.

Ah, nevermind - if you don't patch the addresses which are in
_jump_label section, the untouched code will just do far jump (jmpq)
to right after the macro, which is ok.
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