From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: [PATCH v2 06/12] KVM: MMU: introduce a static table to map guest
 access to spte access
Date: Thu, 24 Jan 2013 22:15:50 -0200
Message-ID: <20130125001550.GB22875@amt.cnet>
References: <50FFB5A1.5090708@linux.vnet.ibm.com>
 <50FFB658.6040205@linux.vnet.ibm.com>
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Cc: Avi Kivity <avi.kivity@gmail.com>, Gleb Natapov <gleb@redhat.com>,
	LKML <linux-kernel@vger.kernel.org>, KVM <kvm@vger.kernel.org>
To: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
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On Wed, Jan 23, 2013 at 06:07:20PM +0800, Xiao Guangrong wrote:
> It makes set_spte more clean and reduces branch prediction
> 
> Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
> ---
>  arch/x86/kvm/mmu.c |   37 ++++++++++++++++++++++++++-----------
>  1 files changed, 26 insertions(+), 11 deletions(-)

Don't see set_spte as being a performance problem?
IMO the current code is quite simple.