From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755156Ab0D0Kmq (ORCPT ); Tue, 27 Apr 2010 06:42:46 -0400 Received: from tx2ehsobe002.messaging.microsoft.com ([65.55.88.12]:59235 "EHLO TX2EHSOBE003.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754637Ab0D0Kix (ORCPT ); Tue, 27 Apr 2010 06:38:53 -0400 X-SpamScore: 1 X-BigFish: VPS1(zzab9bhzz1202hzz6ff19hz32i2a8h87h62h) X-Spam-TCS-SCL: 1:0 X-FB-DOMAIN-IP-MATCH: fail X-WSS-ID: 0L1J6WG-02-NOO-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 07/22] KVM: SVM: Implement MMU helper functions for Nested Nested Paging Date: Tue, 27 Apr 2010 12:38:17 +0200 Message-ID: <1272364712-17425-8-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 10:38:35.0761 (UTC) FILETIME=[CA522610:01CAE5F5] 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 4aae4be..e31f601 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -92,6 +92,9 @@ struct nested_state { u32 intercept_exceptions; u64 intercept; + /* Nested Paging related state */ + u64 nested_cr3; + }; #define MSRPM_OFFSETS 16 @@ -1490,6 +1493,36 @@ 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) -- 1.7.0.4