From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: How to use shadow page in KVM?
Date: Sun, 08 Mar 2015 13:46:02 +0100
Message-ID: <54FC448A.6040309@redhat.com>
References: <CAGokyTZog-L1d3+CJ2d6FUCJLvHNjmqK63mupg9MfDxQ22yJpw@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
To: Taowei Luo <uaedante@gmail.com>, kvm@vger.kernel.org
Return-path: <kvm-owner@vger.kernel.org>
Received: from mail-we0-f175.google.com ([74.125.82.175]:44756 "EHLO
	mail-we0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1752494AbbCHMqH (ORCPT <rfc822;kvm@vger.kernel.org>);
	Sun, 8 Mar 2015 08:46:07 -0400
Received: by wesk11 with SMTP id k11so68631193wes.11
        for <kvm@vger.kernel.org>; Sun, 08 Mar 2015 05:46:06 -0700 (PDT)
In-Reply-To: <CAGokyTZog-L1d3+CJ2d6FUCJLvHNjmqK63mupg9MfDxQ22yJpw@mail.gmail.com>
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>



On 08/03/2015 09:54, Taowei Luo wrote:
> Hello everyone!
> 
> I am trying to make a comparison between several paging modes in
> virtualization. (hardware assisted paging and shadow paging
> especially)
> 
> But just failed on using shadow page in virtual machines managed by KVM.
> 
> In my experiments, HAP is used by default. It can't be disabled or
> switches to shadow page by simply removing the kvm-intel module or
> calling kvm_disable_tdp(). So I am asking for help and suggestions.

Load the kvm-intel module with the ept=0 parameter.

Paolo