From patchwork Tue Aug 2 07:47:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 12934333 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 EDA0DC00140 for ; Tue, 2 Aug 2022 07:51:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232425AbiHBHvO (ORCPT ); Tue, 2 Aug 2022 03:51:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55892 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236202AbiHBHu5 (ORCPT ); Tue, 2 Aug 2022 03:50:57 -0400 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DD0F54D4DB for ; Tue, 2 Aug 2022 00:50:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1659426638; x=1690962638; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=zFh6cq5BXS58ZNjpM4IyIaGZkYXo9XQFUzf0cTr2ihM=; b=l+ptFb1avZ8tS0oL0seiV2ygFxKGbhHuVYt3aW1w2fElFpykcZY6Xsfr h9iC2ZlBRBxEWRfVd08Fxgz/slZBS0Ku3AA7hq69hZ+l/ZSku1Q3z96BV 9iJDHq4THOUoZQwo5qnB+UMKkPvHBrFqJHGH+w6fGUMXrs2kuPimW1tKF 6S9ltGIoY5X3IU/9WX06djrt86c0s0ZFGY1+7ZMlP649zEwvoVdGFgIsO YinkSxRzhMl6tgGIR7tT798tMOj/geqEzB8cyH0h6jmXwNkNF5nRhrDeE MPj0VScROpwW4vhcnWpQABmLk1742D9MEssYHWgSrw4a1Hc8FGnnxm+vq w==; X-IronPort-AV: E=McAfee;i="6400,9594,10426"; a="272393243" X-IronPort-AV: E=Sophos;i="5.93,210,1654585200"; d="scan'208";a="272393243" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Aug 2022 00:50:38 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,210,1654585200"; d="scan'208";a="630604528" Received: from lxy-dell.sh.intel.com ([10.239.48.38]) by orsmga008.jf.intel.com with ESMTP; 02 Aug 2022 00:50:34 -0700 From: Xiaoyao Li To: Paolo Bonzini , Isaku Yamahata , Gerd Hoffmann , =?utf-8?q?Daniel_P_=2E_Berrang=C3=A9?= , =?utf-8?q?Phi?= =?utf-8?q?lippe_Mathieu-Daud=C3=A9?= , Richard Henderson , "Michael S . Tsirkin" , Marcel Apfelbaum , Cornelia Huck , Marcelo Tosatti , Laszlo Ersek , Eric Blake Cc: Connor Kuehl , erdemaktas@google.com, kvm@vger.kernel.org, qemu-devel@nongnu.org, seanjc@google.com, xiaoyao.li@intel.com Subject: [PATCH v1 38/40] i386/tdx: Skip kvm_put_apicbase() for TDs Date: Tue, 2 Aug 2022 15:47:48 +0800 Message-Id: <20220802074750.2581308-39-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220802074750.2581308-1-xiaoyao.li@intel.com> References: <20220802074750.2581308-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org KVM doesn't allow wirting to MSR_IA32_APICBASE for TDs. Signed-off-by: Xiaoyao Li Acked-by: Gerd Hoffmann --- target/i386/kvm/kvm.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 53ab539e7e4d..948c87ebdb97 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -2949,6 +2949,11 @@ void kvm_put_apicbase(X86CPU *cpu, uint64_t value) { int ret; + /* TODO: Allow accessing guest state for debug TDs. */ + if (is_tdx_vm()) { + return; + } + ret = kvm_put_one_msr(cpu, MSR_IA32_APICBASE, value); assert(ret == 1); }