From patchwork Mon Dec 7 20:45:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Adalbert_Laz=C4=83r?= X-Patchwork-Id: 11956661 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 171F4C4361B for ; Mon, 7 Dec 2020 20:47:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B8C9A238A0 for ; Mon, 7 Dec 2020 20:47:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726997AbgLGUrh (ORCPT ); Mon, 7 Dec 2020 15:47:37 -0500 Received: from mx01.bbu.dsd.mx.bitdefender.com ([91.199.104.161]:42574 "EHLO mx01.bbu.dsd.mx.bitdefender.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726614AbgLGUrg (ORCPT ); Mon, 7 Dec 2020 15:47:36 -0500 Received: from smtp.bitdefender.com (smtp01.buh.bitdefender.com [10.17.80.75]) by mx01.bbu.dsd.mx.bitdefender.com (Postfix) with ESMTPS id D1C63305D504; Mon, 7 Dec 2020 22:46:13 +0200 (EET) Received: from localhost.localdomain (unknown [91.199.104.27]) by smtp.bitdefender.com (Postfix) with ESMTPSA id AF6683072784; Mon, 7 Dec 2020 22:46:13 +0200 (EET) From: =?utf-8?q?Adalbert_Laz=C4=83r?= To: kvm@vger.kernel.org Cc: virtualization@lists.linux-foundation.org, Paolo Bonzini , =?utf-8?b?TmljdciZb3IgQ8OuyJt1?= , =?utf-8?q?Adalbert?= =?utf-8?q?_Laz=C4=83r?= Subject: [PATCH v11 12/81] KVM: svm: add support for descriptor-table VM-exits Date: Mon, 7 Dec 2020 22:45:13 +0200 Message-Id: <20201207204622.15258-13-alazar@bitdefender.com> In-Reply-To: <20201207204622.15258-1-alazar@bitdefender.com> References: <20201207204622.15258-1-alazar@bitdefender.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Nicușor Cîțu This function is needed for the KVMI_VCPU_EVENT_DESCRIPTOR event. Signed-off-by: Nicușor Cîțu Signed-off-by: Adalbert Lazăr --- arch/x86/kvm/svm/svm.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index f3ee6bad0db5..00bda794609c 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -2335,6 +2335,13 @@ static int rsm_interception(struct vcpu_svm *svm) return kvm_emulate_instruction_from_buffer(&svm->vcpu, rsm_ins_bytes, 2); } +static int descriptor_access_interception(struct vcpu_svm *svm) +{ + struct kvm_vcpu *vcpu = &svm->vcpu; + + return kvm_emulate_instruction(vcpu, 0); +} + static int rdpmc_interception(struct vcpu_svm *svm) { int err; @@ -2959,6 +2966,14 @@ static int (*const svm_exit_handlers[])(struct vcpu_svm *svm) = { [SVM_EXIT_RSM] = rsm_interception, [SVM_EXIT_AVIC_INCOMPLETE_IPI] = avic_incomplete_ipi_interception, [SVM_EXIT_AVIC_UNACCELERATED_ACCESS] = avic_unaccelerated_access_interception, + [SVM_EXIT_IDTR_READ] = descriptor_access_interception, + [SVM_EXIT_GDTR_READ] = descriptor_access_interception, + [SVM_EXIT_LDTR_READ] = descriptor_access_interception, + [SVM_EXIT_TR_READ] = descriptor_access_interception, + [SVM_EXIT_IDTR_WRITE] = descriptor_access_interception, + [SVM_EXIT_GDTR_WRITE] = descriptor_access_interception, + [SVM_EXIT_LDTR_WRITE] = descriptor_access_interception, + [SVM_EXIT_TR_WRITE] = descriptor_access_interception, }; static void dump_vmcb(struct kvm_vcpu *vcpu)