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Date: Fri, 25 Apr 2008 20:04:51 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>, Jiri Slaby <jirislaby@gmail.com>,
       David Miller <davem@davemloft.net>, zdenek.kabelac@gmail.com,
       rjw@sisk.pl, paulmck@linux.vnet.ibm.com, akpm@linux-foundation.org,
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       Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>, pageexec@freemail.hu,
       "H. Peter Anvin" <hpa@zytor.com>, Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: [PATCH 1/1] x86: fix text_poke
Message-ID: <20080425180451.GA3445@elte.hu>
References: <alpine.LFD.1.10.0804250830200.2779@woody.linux-foundation.org> <20080425154854.GC3265@one.firstfloor.org> <alpine.LFD.1.10.0804250904560.2779@woody.linux-foundation.org> <20080425162215.GA16273@elte.hu> <alpine.LFD.1.10.0804250925341.2779@woody.linux-foundation.org> <20080425164509.GB19962@elte.hu> <alpine.LFD.1.10.0804250950360.2779@woody.linux-foundation.org> <20080425170237.GA24472@elte.hu> <alpine.LFD.1.10.0804251009340.2779@woody.linux-foundation.org> <20080425175333.GA25276@elte.hu>
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* Ingo Molnar <mingo@elte.hu> wrote:

> yeah, it's done 2800 times on my box with a distro .config.
> 
> 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.

i mean, alternatives_smp_switch().

	Ingo