linux-kernel - Re: [PATCH] x86: make text

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Message-ID: <49B137F7.9040207@redhat.com>
Date:	Fri, 06 Mar 2009 09:49:27 -0500
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Nick Piggin <npiggin@...e.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	"H. Peter Anvin" <hpa@...or.com>,
	Steven Rostedt <srostedt@...hat.com>
Subject: Re: [PATCH] x86: make text_poke() atomic using fixmap

Hi Ingo,

Ingo Molnar wrote:
> * Ingo Molnar <mingo@...e.hu> wrote:
> 
>> * Masami Hiramatsu <mhiramat@...hat.com> wrote:
>>
>>> Hi Ingo,
>>>
>>> Here is the patch which uses fixmaps instead of vmap in 
>>> text_poke(). This made the code much simpler than I thought 
>>> :).
>> Looks good to me at a quick glance albeit Linus had second 
>> thoughts about using fixmaps for this in the past. But with 
>> delayed-flush for vmaps i think fixmaps are again the simpler 
>> and more robust - albeit more limited - choice ...
>>
>> In any case, the x86 tree already unified fixmap.h so could 
>> you please resend the whole series as a 0/3, 1/3, 2/3, 3/3 
>> thing against tip:master, starting a new thread on lkml? (this 
>> thread is already way too deep)
> 
> Ping? I think there's agreement and it would be nice to fix this 
> in .30. Looks too complex for .29 - maybe backportable to .29.1 
> if it stays problem-free in testing.

Sorry for later, I'll post it as soon as possible.

> 
> 	Ingo

-- 
Masami Hiramatsu

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

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

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