From patchwork Fri Nov 4 14:47:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vitaly Kuznetsov X-Patchwork-Id: 13032133 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CEBA6C4332F for ; Fri, 4 Nov 2022 14:48:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231610AbiKDOsR (ORCPT ); Fri, 4 Nov 2022 10:48:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33494 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231238AbiKDOsP (ORCPT ); Fri, 4 Nov 2022 10:48:15 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 648912AC68 for ; Fri, 4 Nov 2022 07:47:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1667573237; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Kaps3zMSHO65dDMIJ3lyo06euU2eeSE64TDnX+RUGtg=; b=bF9WVnkQgMZQ5mkHazaRe5wvNfTvI8qoBme2TBKHmCG9c3jGtua4NjZ/ZGK1Z8QKfiFD46 WyHTsJPb2zl7dhzWsbZIlfX+8ft+hB1yYbH0gW5bgr98QikGPjBfBAb/hA4zbZ5F2P8kRN lru/X3fpb1OVR7YzAMY3KLXQY8mB73M= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-203-xBOZBFJkPeGODo2YnDefEg-1; Fri, 04 Nov 2022 10:47:14 -0400 X-MC-Unique: xBOZBFJkPeGODo2YnDefEg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D0CAA87B2A6; Fri, 4 Nov 2022 14:47:13 +0000 (UTC) Received: from ovpn-192-136.brq.redhat.com (ovpn-192-136.brq.redhat.com [10.40.192.136]) by smtp.corp.redhat.com (Postfix) with ESMTP id A6C28C2C8D9; Fri, 4 Nov 2022 14:47:11 +0000 (UTC) From: Vitaly Kuznetsov To: kvm@vger.kernel.org, Paolo Bonzini , Sean Christopherson Cc: Wanpeng Li , Jim Mattson , Maxim Levitsky , linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/4] KVM: nVMX: Sanitize primary processor-based VM-execution controls with eVMCS too Date: Fri, 4 Nov 2022 15:47:05 +0100 Message-Id: <20221104144708.435865-2-vkuznets@redhat.com> In-Reply-To: <20221104144708.435865-1-vkuznets@redhat.com> References: <20221104144708.435865-1-vkuznets@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.8 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org The only unsupported primary processor-based VM-execution control at the moment is CPU_BASED_ACTIVATE_TERTIARY_CONTROLS and KVM doesn't expose it in nested VMX feature MSRs anyway (see nested_vmx_setup_ctls_msrs()) but in preparation to inverting "unsupported with eVMCS" checks (and for completeness) it's better to sanitize MSR_IA32_VMX_PROCBASED_CTLS/ MSR_IA32_VMX_TRUE_PROCBASED_CTLS too. No functional change intended. Signed-off-by: Vitaly Kuznetsov --- arch/x86/kvm/vmx/evmcs.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/x86/kvm/vmx/evmcs.c b/arch/x86/kvm/vmx/evmcs.c index d8b23c96d627..337783675731 100644 --- a/arch/x86/kvm/vmx/evmcs.c +++ b/arch/x86/kvm/vmx/evmcs.c @@ -368,6 +368,7 @@ enum evmcs_revision { enum evmcs_ctrl_type { EVMCS_EXIT_CTRLS, EVMCS_ENTRY_CTRLS, + EVMCS_EXEC_CTRL, EVMCS_2NDEXEC, EVMCS_PINCTRL, EVMCS_VMFUNC, @@ -381,6 +382,9 @@ static const u32 evmcs_unsupported_ctrls[NR_EVMCS_CTRLS][NR_EVMCS_REVISIONS] = { [EVMCS_ENTRY_CTRLS] = { [EVMCSv1_LEGACY] = EVMCS1_UNSUPPORTED_VMENTRY_CTRL, }, + [EVMCS_EXEC_CTRL] = { + [EVMCSv1_LEGACY] = EVMCS1_UNSUPPORTED_EXEC_CTRL, + }, [EVMCS_2NDEXEC] = { [EVMCSv1_LEGACY] = EVMCS1_UNSUPPORTED_2NDEXEC, }, @@ -441,6 +445,10 @@ void nested_evmcs_filter_control_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 * unsupported_ctrls |= VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL; ctl_high &= ~unsupported_ctrls; break; + case MSR_IA32_VMX_PROCBASED_CTLS: + case MSR_IA32_VMX_TRUE_PROCBASED_CTLS: + ctl_high &= ~evmcs_get_unsupported_ctls(EVMCS_EXEC_CTRL); + break; case MSR_IA32_VMX_PROCBASED_CTLS2: ctl_high &= ~evmcs_get_unsupported_ctls(EVMCS_2NDEXEC); break; @@ -468,6 +476,10 @@ int nested_evmcs_check_controls(struct vmcs12 *vmcs12) vmcs12->pin_based_vm_exec_control))) return -EINVAL; + if (CC(!nested_evmcs_is_valid_controls(EVMCS_EXEC_CTRL, + vmcs12->cpu_based_vm_exec_control))) + return -EINVAL; + if (CC(!nested_evmcs_is_valid_controls(EVMCS_2NDEXEC, vmcs12->secondary_vm_exec_control))) return -EINVAL;