From patchwork Mon Nov 16 18:26:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Isaku Yamahata X-Patchwork-Id: 11910405 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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 1A528C63777 for ; Mon, 16 Nov 2020 18:32:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CF17A206E0 for ; Mon, 16 Nov 2020 18:32:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388662AbgKPSbZ (ORCPT ); Mon, 16 Nov 2020 13:31:25 -0500 Received: from mga06.intel.com ([134.134.136.31]:20632 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388194AbgKPS2I (ORCPT ); Mon, 16 Nov 2020 13:28:08 -0500 IronPort-SDR: ZeG1QOzTL+T10rZfMpToTD/deM3wVL351RpA/tj0fH/Ti8zCXGuD0sBJcfaNvbA8Yart34MPFZ 9lFwKo3/CkhQ== X-IronPort-AV: E=McAfee;i="6000,8403,9807"; a="232410047" X-IronPort-AV: E=Sophos;i="5.77,483,1596524400"; d="scan'208";a="232410047" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Nov 2020 10:28:07 -0800 IronPort-SDR: IkSg7+/V459wB9fwH3DtZv6KXZtYbDbJNyMmTD5smWpm5ennW+BfsSJNtk3cpdpEIdUSCK//Ux pDoShjzkK2dw== X-IronPort-AV: E=Sophos;i="5.77,483,1596524400"; d="scan'208";a="400528081" Received: from ls.sc.intel.com (HELO localhost) ([143.183.96.54]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Nov 2020 10:28:07 -0800 From: isaku.yamahata@intel.com To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H . Peter Anvin" , Paolo Bonzini , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , x86@kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: isaku.yamahata@intel.com, isaku.yamahata@gmail.com, Sean Christopherson Subject: [RFC PATCH 33/67] KVM: Export kvm_is_reserved_pfn() for use by TDX Date: Mon, 16 Nov 2020 10:26:18 -0800 Message-Id: <166f7cdaac4eadf86615bcc508164235e13d76b7.1605232743.git.isaku.yamahata@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Sean Christopherson TDX will use kvm_is_reserved_pfn() to prevent installing a reserved PFN int SEPT. Or rather, to prevent such an attempt, as reserved PFNs are not covered by TDMRs. Signed-off-by: Sean Christopherson --- virt/kvm/kvm_main.c | 1 + 1 file changed, 1 insertion(+) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index aa5f27753756..a60dcf682f33 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -185,6 +185,7 @@ bool kvm_is_reserved_pfn(kvm_pfn_t pfn) return true; } +EXPORT_SYMBOL_GPL(kvm_is_reserved_pfn); bool kvm_is_transparent_hugepage(kvm_pfn_t pfn) {