From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: Nested paging in nested SVM setup Date: Thu, 21 Aug 2014 13:04:49 +0200 Message-ID: <53F5D251.60009@redhat.com> References: <53A179C4.9060203@gmail.com> <53A18A6D.2050407@siemens.com> <53F44440.6070408@gmail.com> <53F44645.2000708@redhat.com> <53F45036.1070309@gmail.com> <53F45832.5080708@redhat.com> <53F59192.3070500@gmail.com> <53F5B250.3000206@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit To: Valentine Sinitsyn , Jan Kiszka , kvm@vger.kernel.org Return-path: Received: from mail-we0-f170.google.com ([74.125.82.170]:44750 "EHLO mail-we0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753849AbaHULEx (ORCPT ); Thu, 21 Aug 2014 07:04:53 -0400 Received: by mail-we0-f170.google.com with SMTP id w62so9114627wes.1 for ; Thu, 21 Aug 2014 04:04:52 -0700 (PDT) In-Reply-To: <53F5B250.3000206@gmail.com> Sender: kvm-owner@vger.kernel.org List-ID: Il 21/08/2014 10:48, Valentine Sinitsyn ha scritto: > So I'm returning to my original question: is this an intended behavior > of KVM that APIC access on nested page tables level are not trapped, or > is this a bug? I think it's just a bug. Nobody thought that you'd let L2 access L1's APIC via NPT. Let me think of how to fix it. Paolo