linux-kernel - Re: [PATCH 1/3] x86: record relocation offset

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Message-ID: <20091231005305.GA3221@redhat.com>
Date:	Wed, 30 Dec 2009 19:53:05 -0500
From:	"Frank Ch. Eigler" <fche@...hat.com>
To:	James Bottomley <James.Bottomley@...e.de>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Xiao Guangrong <xiaoguangrong@...fujitsu.com>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Paul Mackerras <paulus@...ba.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] x86: record relocation offset

Hi -

james wrote:

> The reasons I gave was why _text relocation didn't work properly for
> systemtap.  The first paragraph was just giving a precis of history
> [...]

The issues you listed (kernel .init sections, modules) have nothing to
do with kernel relocation, and systemtap has apprx. never had problem
calculating relevant addresses in their presence.  The systemtap
problem you are probably thinking of relates to the kernel's former
inability to insert kprobes within .init sections.

- FChE
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