From patchwork Wed Dec 8 17:00:28 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nadav Har'El X-Patchwork-Id: 391042 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id oB8H0YXk019058 for ; Wed, 8 Dec 2010 17:00:35 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752542Ab0LHRAc (ORCPT ); Wed, 8 Dec 2010 12:00:32 -0500 Received: from mtagate2.uk.ibm.com ([194.196.100.162]:47276 "EHLO mtagate2.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750993Ab0LHRAb (ORCPT ); Wed, 8 Dec 2010 12:00:31 -0500 Received: from d06nrmr1307.portsmouth.uk.ibm.com (d06nrmr1307.portsmouth.uk.ibm.com [9.149.38.129]) by mtagate2.uk.ibm.com (8.13.1/8.13.1) with ESMTP id oB8H0UUb032087 for ; Wed, 8 Dec 2010 17:00:30 GMT Received: from d06av04.portsmouth.uk.ibm.com (d06av04.portsmouth.uk.ibm.com [9.149.37.216]) by d06nrmr1307.portsmouth.uk.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id oB8H0VBV3342528 for ; Wed, 8 Dec 2010 17:00:31 GMT Received: from d06av04.portsmouth.uk.ibm.com (loopback [127.0.0.1]) by d06av04.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id oB8H0TZK021915 for ; Wed, 8 Dec 2010 10:00:30 -0700 Received: from rice.haifa.ibm.com (rice.haifa.ibm.com [9.148.8.217]) by d06av04.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id oB8H0TZq021905 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 8 Dec 2010 10:00:29 -0700 Received: from rice.haifa.ibm.com (lnx-nyh.haifa.ibm.com [127.0.0.1]) by rice.haifa.ibm.com (8.14.4/8.14.4) with ESMTP id oB8H0SX5008539; Wed, 8 Dec 2010 19:00:28 +0200 Received: (from nyh@localhost) by rice.haifa.ibm.com (8.14.4/8.14.4/Submit) id oB8H0S85008537; Wed, 8 Dec 2010 19:00:28 +0200 Date: Wed, 8 Dec 2010 19:00:28 +0200 Message-Id: <201012081700.oB8H0S85008537@rice.haifa.ibm.com> X-Authentication-Warning: rice.haifa.ibm.com: nyh set sender to "Nadav Har'El" using -f Cc: gleb@redhat.com, avi@redhat.com To: kvm@vger.kernel.org From: "Nadav Har'El" References: <1291827596-nyh@il.ibm.com> Subject: [PATCH 01/28] nVMX: Add "nested" module option to vmx.c Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Wed, 08 Dec 2010 17:00:35 +0000 (UTC) --- .before/arch/x86/kvm/vmx.c 2010-12-08 18:56:48.000000000 +0200 +++ .after/arch/x86/kvm/vmx.c 2010-12-08 18:56:48.000000000 +0200 @@ -69,6 +69,14 @@ module_param(emulate_invalid_guest_state static int __read_mostly vmm_exclusive = 1; module_param(vmm_exclusive, bool, S_IRUGO); +/* + * If nested=1, nested virtualization is supported, i.e., the guest may use + * VMX and be a hypervisor for its own guests. If nested=0, the guest may not + * use VMX instructions. + */ +static int nested = 0; +module_param(nested, int, S_IRUGO); + #define KVM_GUEST_CR0_MASK_UNRESTRICTED_GUEST \ (X86_CR0_WP | X86_CR0_NE | X86_CR0_NW | X86_CR0_CD) #define KVM_GUEST_CR0_MASK \