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[2620:137:e000::1:20]) by mx.google.com with ESMTP id i31-20020a0564020f1f00b004603a95e1d3si678974eda.135.2022.10.19.20.24.04; Wed, 19 Oct 2022 20:24:30 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=J85kF6O9; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230325AbiJTDQX (ORCPT + 99 others); Wed, 19 Oct 2022 23:16:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59474 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230101AbiJTDQU (ORCPT ); Wed, 19 Oct 2022 23:16:20 -0400 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4F494152013; Wed, 19 Oct 2022 20:16:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1666235779; x=1697771779; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=/duzIIr48yquYHPVShw/vjj6dlvWHbKZ3g4MXUDZw60=; b=J85kF6O97aDg3mA6lKgpVXa8lIBeNUNXc/V4zdXvcBago2B0f7kq3AuN 5HZ+5g70fx2A53bXk46Z1sq4ktC6w8O97dPxiyOo9LpOf5KpviQCBIxXd VN8FXxRjXD5ZAkpzX10U0Be6hfJs4ASSuF65hm1tox50qTn8hRjB4x/eB gNlcJrOr0TNc7G6CXCr2FQDuoimqwmdjTpf8nq23/6zP3LwfHHgDqjf3r XKomwopB8p4ayd8asF9HaoY8gYefXYQ3eQCjw2fHTNDl+Ve3W+542AAFH s9MR2dWXKxVKmbtCjE1l70Rw6RFWOTIbzkDQCWeiFuyptQulxCsXiry4B Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10505"; a="333155355" X-IronPort-AV: E=Sophos;i="5.95,196,1661842800"; d="scan'208";a="333155355" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Oct 2022 20:16:17 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10505"; a="662783145" X-IronPort-AV: E=Sophos;i="5.95,196,1661842800"; d="scan'208";a="662783145" Received: from lxy-dell.sh.intel.com ([10.239.48.100]) by orsmga001.jf.intel.com with ESMTP; 19 Oct 2022 20:16:15 -0700 From: Xiaoyao Li To: Sean Christopherson , Paolo Bonzini Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Xiaoyao Li Subject: [PATCH] KVM: x86: Fix the initial value of mcg_cap Date: Thu, 20 Oct 2022 11:16:15 +0800 Message-Id: <20221020031615.890400-1-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 X-Spam-Status: No, score=-5.6 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,HK_RANDOM_ENVFROM, HK_RANDOM_FROM,RCVD_IN_DNSWL_HI,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL, SPF_HELO_NONE,SPF_NONE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1747175363824948508?= X-GMAIL-MSGID: =?utf-8?q?1747175363824948508?= vcpu->arch.mcg_cap represents the value of MSR_IA32_MCG_CAP. It's set via ioctl(KVM_X86_SETUP_MCE) from userspace when exposing and configuring MCE to guest. It's wrong to leave the default value as KVM_MAX_MCE_BANKS. Signed-off-by: Xiaoyao Li --- arch/x86/kvm/x86.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 4bd5f8a751de..ca8f4a3e698d 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -11801,7 +11801,6 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu) GFP_KERNEL_ACCOUNT); if (!vcpu->arch.mce_banks || !vcpu->arch.mci_ctl2_banks) goto fail_free_mce_banks; - vcpu->arch.mcg_cap = KVM_MAX_MCE_BANKS; if (!zalloc_cpumask_var(&vcpu->arch.wbinvd_dirty_mask, GFP_KERNEL_ACCOUNT))