From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756185Ab0CCTOK (ORCPT ); Wed, 3 Mar 2010 14:14:10 -0500 Received: from tx2ehsobe004.messaging.microsoft.com ([65.55.88.14]:27599 "EHLO TX2EHSOBE008.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755053Ab0CCTN2 (ORCPT ); Wed, 3 Mar 2010 14:13:28 -0500 X-SpamScore: -4 X-BigFish: VPS-4(zz936eMab9bhzz1202hzzz32i2a8h87h6bh62h) X-Spam-TCS-SCL: 1:0 X-FB-DOMAIN-IP-MATCH: fail X-WSS-ID: 0KYQ01B-01-LM9-02 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 07/18] KVM: SVM: Implement MMU helper functions for Nested Nested Paging Date: Wed, 3 Mar 2010 20:12:10 +0100 Message-ID: <1267643541-451-8-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 19:12:42.0657 (UTC) FILETIME=[7FC8B110:01CABB05] 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 adds the helper functions which will be used in the mmu context for handling nested nested page faults. Signed-off-by: Joerg Roedel --- arch/x86/kvm/svm.c | 33 +++++++++++++++++++++++++++++++++ 1 files changed, 33 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index a7a76f5..a6c08e0 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -91,6 +91,9 @@ struct nested_state { u32 intercept_exceptions; u64 intercept; + /* Nested Paging related state */ + u64 nested_cr3; + }; #define MSRPM_OFFSETS 16 @@ -1545,6 +1548,36 @@ static int vmmcall_interception(struct vcpu_svm *svm) return 1; } +static unsigned long nested_svm_get_tdp_cr3(struct kvm_vcpu *vcpu) +{ + struct vcpu_svm *svm = to_svm(vcpu); + + return svm->nested.nested_cr3; +} + +static void nested_svm_set_tdp_cr3(struct kvm_vcpu *vcpu, + unsigned long root) +{ + struct vcpu_svm *svm = to_svm(vcpu); + + svm->vmcb->control.nested_cr3 = root; + force_new_asid(vcpu); +} + +static void nested_svm_inject_npf_exit(struct kvm_vcpu *vcpu, + unsigned long addr, + u32 error_code) +{ + struct vcpu_svm *svm = to_svm(vcpu); + + svm->vmcb->control.exit_code = SVM_EXIT_NPF; + svm->vmcb->control.exit_code_hi = 0; + svm->vmcb->control.exit_info_1 = error_code; + svm->vmcb->control.exit_info_2 = addr; + + nested_svm_vmexit(svm); +} + static int nested_svm_check_permissions(struct vcpu_svm *svm) { if (!(svm->vcpu.arch.efer & EFER_SVME) -- 1.7.0