linux-kernel - Re: Performance overhead of get_cycles

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Message-ID: <20071211083513.56c2a385@laptopd505.fenrus.org>
Date:	Tue, 11 Dec 2007 08:35:13 -0800
From:	Arjan van de Ven <arjan@...radead.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	dor.laor@...ranet.com, tglx@...utronix.de,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	kvm-devel <kvm-devel@...ts.sourceforge.net>
Subject: Re: Performance overhead of get_cycles_sync

On Tue, 11 Dec 2007 15:27:17 +0100
Ingo Molnar <mingo@...e.hu> wrote:

> 
> * Dor Laor <dor.laor@...il.com> wrote:
> 
> 
> The patch below should resolve this - could you please test and Ack
> it? But this CPUID was present in v2.6.23 too, so why did it only
> show up in 2.6.24-rc for you?

isn't this probably wrong since this code is also used in the vsyscall code..
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