From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755082Ab0CCTN2 (ORCPT ); Wed, 3 Mar 2010 14:13:28 -0500 Received: from va3ehsobe001.messaging.microsoft.com ([216.32.180.11]:38763 "EHLO VA3EHSOBE001.bigfish.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754362Ab0CCTNH (ORCPT ); Wed, 3 Mar 2010 14:13:07 -0500 X-SpamScore: -4 X-BigFish: VPS-4(zz936eMab9bhzz1202hzzz32i6bh87h2a8h62h) X-Spam-TCS-SCL: 1:0 X-FB-DOMAIN-IP-MATCH: fail X-WSS-ID: 0KYQ01D-01-LMI-02 X-M-MSG: From: Joerg Roedel To: Avi Kivity , Marcelo Tosatti CC: Alexander Graf , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Joerg Roedel Subject: [PATCH 17/18] KVM: SVM: Report Nested Paging support to userspace Date: Wed, 3 Mar 2010 20:12:20 +0100 Message-ID: <1267643541-451-18-git-send-email-joerg.roedel@amd.com> X-Mailer: git-send-email 1.7.0 In-Reply-To: <1267643541-451-1-git-send-email-joerg.roedel@amd.com> References: <1267643541-451-1-git-send-email-joerg.roedel@amd.com> X-OriginalArrivalTime: 03 Mar 2010 19:12:42.0844 (UTC) FILETIME=[7FE539C0:01CABB05] MIME-Version: 1.0 Content-Type: text/plain X-Reverse-DNS: ausb3extmailp02.amd.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch implements the reporting of the nested paging feature support to userspace. Signed-off-by: Joerg Roedel --- arch/x86/kvm/svm.c | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index fe1398e..ce71023 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -3289,6 +3289,16 @@ static void svm_cpuid_update(struct kvm_vcpu *vcpu) static void svm_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry) { + switch (func) { + case 0x8000000A: + if (!npt_enabled) + break; + + /* NPT feature is supported by Nested SVM */ + entry->edx = SVM_FEATURE_NPT; + + break; + } } static const struct trace_print_flags svm_exit_reasons_str[] = { -- 1.7.0