linux-kernel - Re: [PATCH 3/3] x86: WARN_ON breakpoints from .kprobes.text section

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Message-ID: <479C94F6.2070502@redhat.com>
Date:	Sun, 27 Jan 2008 09:28:06 -0500
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Abhishek Sagar <sagar.abhishek@...il.com>
CC:	LKML <linux-kernel@...r.kernel.org>, jkenisto@...ibm.com,
	ananth@...ibm.com, Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH 3/3] x86: WARN_ON breakpoints from .kprobes.text section

Hi Abhishek,

Abhishek Sagar wrote:
> Identify breakpoints in .kprobes.text section. These certainly aren't kprobe 
> traps. However, we make an exception for the breakpoint hardcoded into jprobe_return.

Sorry, I can not understand what issue these patches can solve.
The breakpoint which is inserted by external debugger will be checked by
kprobe_handler() and be passed to other exception_notify_handlers.
In that case, we don't need to warn it.
I think current code is enough simple.

Thank you,

-- 
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America) Inc.
Software Solutions Division

e-mail: mhiramat@...hat.com

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