From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754738Ab0D0KjD (ORCPT ); Tue, 27 Apr 2010 06:39:03 -0400 Received: from va3ehsobe004.messaging.microsoft.com ([216.32.180.14]:14125 "EHLO VA3EHSOBE004.bigfish.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754698Ab0D0Ki6 (ORCPT ); Tue, 27 Apr 2010 06:38:58 -0400 X-SpamScore: 1 X-BigFish: VPS1(zzab9bhzz1202hzz6ff19hz32i2a8h87h43h61h) X-Spam-TCS-SCL: 0:0 X-FB-DOMAIN-IP-MATCH: fail X-WSS-ID: 0L1J6WN-01-32U-02 X-M-MSG: From: Joerg Roedel To: Avi Kivity , Marcelo Tosatti CC: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Joerg Roedel Subject: [PATCH 21/22] KVM: SVM: Report Nested Paging support to userspace Date: Tue, 27 Apr 2010 12:38:31 +0200 Message-ID: <1272364712-17425-22-git-send-email-joerg.roedel@amd.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1272364712-17425-1-git-send-email-joerg.roedel@amd.com> References: <1272364712-17425-1-git-send-email-joerg.roedel@amd.com> X-OriginalArrivalTime: 27 Apr 2010 10:38:36.0230 (UTC) FILETIME=[CA99B660:01CAE5F5] MIME-Version: 1.0 Content-Type: text/plain X-Reverse-DNS: unknown 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 | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 266b1d4..6d6b300 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -3233,7 +3233,12 @@ static void svm_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry) entry->ebx = 8; /* Lets support 8 ASIDs in case we add proper ASID emulation to nested SVM */ entry->ecx = 0; /* Reserved */ - entry->edx = 0; /* Do not support any additional features */ + entry->edx = 0; /* Per default do not support any + additional features */ + + /* Support NPT for the guest if enabled */ + if (npt_enabled) + entry->edx = SVM_FEATURE_NPT; break; } -- 1.7.0.4