linux-kernel - Re: [PATCH ftrace.git] Immedate Values Optimized Jump Fix

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Message-ID: <20080718161523.GY6875@elte.hu>
Date:	Fri, 18 Jul 2008 18:15:23 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Mathieu Desnoyers <compudj@...stal.dyndns.org>
Cc:	Ingo Molnar <mingo@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH ftrace.git] Immedate Values Optimized Jump Fix

* Mathieu Desnoyers <compudj@...stal.dyndns.org> wrote:

> Hi Ingo,
> 
> This fix would apply to the ftrace tree which contains the jump-based 
> immediate values. I don't know if this tree is still under active 
> development, but I guess that it wouldn't hurt to fix it.
> 
> Caused a kernel OOPS when loading the tracepoint probes once in a 
> while on a 8-way x86_64.

We've still got tip/tracing/immediates, with these commits from you:

 $ git-log-line linus.. arch/x86/kernel/immediate.c
 ee563d6: immediate values: jump liveliness
 e26875a: Immediate Values - Jump
 3fc8d03: Immediate Values - x86 Optimization NMI and MCE support

... but the topic is stalled right now, due to hpa having had 
objections. Have those concerns been resolved? (Peter Cc:-ed)

i'd have applied this fix, but it does not apply. The first chunk seems 
already be present (in a different form), the second chunk looks much 
different.

	Ingo
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