linux-kernel - Re: [PATCH 1/1] x86: fix text

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Message-ID: <alpine.LFD.1.10.0804251108370.2779@woody.linux-foundation.org>
Date:	Fri, 25 Apr 2008 11:09:23 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Ingo Molnar <mingo@...e.hu>
cc:	Andi Kleen <andi@...stfloor.org>, Jiri Slaby <jirislaby@...il.com>,
	David Miller <davem@...emloft.net>, zdenek.kabelac@...il.com,
	rjw@...k.pl, paulmck@...ux.vnet.ibm.com, akpm@...ux-foundation.org,
	linux-ext4@...r.kernel.org, herbert@...dor.apana.org.au,
	penberg@...helsinki.fi, clameter@....com,
	linux-kernel@...r.kernel.org,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	pageexec@...email.hu, "H. Peter Anvin" <hpa@...or.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>
Subject: Re: [PATCH 1/1] x86: fix text_poke



On Fri, 25 Apr 2008, Ingo Molnar wrote:
> 
> no strong feeling either way - but i dont think there's any cross-CPU 
> TLB flush done in this case within vmap()/vunmap(). Why? Because when 
> alternative_instructions() runs then we have just a single CPU in 
> cpu_online_map.

Ok, fair enough. Without the IPI, I don't think there's a big deal. And 
you have the numbers to prove it. Consider me convinced.

		Linus
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