linux-kernel - Re: [PATCH -tip/x86/jumplabel] x86: call out into int3 handler directly instead of using notifier

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Message-ID: <alpine.LNX.2.00.1307222256120.14024@pobox.suse.cz>
Date:	Mon, 22 Jul 2013 23:00:50 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	"H. Peter Anvin" <hpa@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org,
	Fengguang Wu <fengguang.wu@...el.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	x86@...nel.org
Subject: Re: [PATCH -tip/x86/jumplabel] x86: call out into int3 handler
 directly instead of using notifier

On Mon, 22 Jul 2013, H. Peter Anvin wrote:

>  What is the baseline for this patch?

Hi!

it's x86/jumplabel branch, as a followup to commit 
fd4363fff3d96 ("x86: Introduce int3 (breakpoint)-based instruction 
patching") sitting there.

This branch however seems to be broken by Ingo's mismerge; this e-mail 
from earlier today:

	https://lkml.org/lkml/2013/7/22/147

implied that he fixed this ("all is fine"), however x86/jumplabel still 
contains just 3/3 of Masami's series, and therefore is broken; 3/3 is not 
enough, it needs also

	kprobes/x86: Remove an incorrect comment about int3 in NMI/MCE
	kprobes/x86: Use text_poke_bp() instead of text_poke_smp*()

included or

	kprobes/x86: Remove unused text_poke_smp() and text_poke_smp_batch() functions

dropped to be in consistent state again.

I pinged Ingo about this:

	https://lkml.org/lkml/2013/7/22/281

but the branch still seems to be in an odd state, containing last patch of 
Masami's series.

Thanks in advance for fixing this and applying mi fix as well,	

-- 
Jiri Kosina
SUSE Labs
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