From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sukanto Ghosh Subject: Re: Doubts regarding Shadow Page Table Management in KVM Date: Wed, 11 Jun 2008 10:43:30 +0530 Message-ID: <484F5EFA.40200@cse.iitb.ac.in> References: <484E9267.9030800@cse.iitb.ac.in> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from smtp1.iitb.ac.in ([203.78.217.177]:35632 "HELO smtp1.iitb.ac.in" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751327AbYFKFKO (ORCPT ); Wed, 11 Jun 2008 01:10:14 -0400 Received: from [10.105.41.67] (unknown [10.105.41.67]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp-auth.iitb.ac.in (Postfix) with ESMTP id C129113900 for ; Wed, 11 Jun 2008 10:40:06 +0530 (IST) In-Reply-To: <484E9267.9030800@cse.iitb.ac.in> Sender: kvm-owner@vger.kernel.org List-ID: I think I have cleared the issue regarding the reverse mapping. I missed the fact, that the write permission is associated with the PTE. I thought that it was associated only with the kernel structures maintaining the physical page-frame. But I want to confirm whether a shadowed guest page refers to "the guest PT page that has a corresponding shadow PT page. And the corresponding shadow PT page is called the shadow of the former. Am I right ? Thanks and regards Sukanto --- * PT = page table ---