From patchwork Thu Jan 25 03:23:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 13529958 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 68531C47258 for ; Thu, 25 Jan 2024 03:33:42 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rSqT1-0006NW-Rq; Wed, 24 Jan 2024 22:31:51 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rSqSy-0005uQ-La for qemu-devel@nongnu.org; Wed, 24 Jan 2024 22:31:48 -0500 Received: from mgamail.intel.com ([192.198.163.10]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rSqSw-0001Dy-Vg for qemu-devel@nongnu.org; Wed, 24 Jan 2024 22:31:48 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1706153507; x=1737689507; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=b62wnyy+65LCHAGArSiNyZudOLiHWSJaSpIcuumUQrw=; b=Nl9EX8njPdH3s637JzeLkicdng+bRqleg2tLxu4/QOGOITxskKK441EE PvR0yHX/Txf3gNOJAn9bbmwXH/ZGbd+JQLDh5dsVKM6j5W7fimP1S2EGg SWqe0S0zM7DMncYapEC02+9A0LKSVfbADttIPfDZQmHOXYpiCdQKFoBr5 dx9VxTVxLkKVmVOn9BM2jRuaiql7I62n5nIAQlsodU8lMbsWAJGydEsIn M65K5yoCMq5/ImOQueD+bG6q8CD72tYaRLhh/9AxrSah0qj1pRXUphyzM F2OT4nmJK8/7LfzwkdfRGjMk8FQbNXS53ZXWmS+OQQK9ObU6erjk2IUy5 g==; X-IronPort-AV: E=McAfee;i="6600,9927,10962"; a="9430301" X-IronPort-AV: E=Sophos;i="6.05,216,1701158400"; d="scan'208";a="9430301" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Jan 2024 19:28:44 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.05,216,1701158400"; d="scan'208";a="2086390" Received: from lxy-clx-4s.sh.intel.com ([10.239.48.52]) by orviesa005.jf.intel.com with ESMTP; 24 Jan 2024 19:28:39 -0800 From: Xiaoyao Li To: Paolo Bonzini , David Hildenbrand , Igor Mammedov , "Michael S . Tsirkin" , Marcel Apfelbaum , Richard Henderson , Peter Xu , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Cornelia Huck , =?utf-8?q?Daniel_P_=2E_Berrang=C3=A9?= , Eric Blake , Markus Armbruster , Marcelo Tosatti Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, xiaoyao.li@intel.com, Michael Roth , Sean Christopherson , Claudio Fontana , Gerd Hoffmann , Isaku Yamahata , Chenyi Qiang Subject: [PATCH v4 56/66] i386/tdx: Disable SMM for TDX VMs Date: Wed, 24 Jan 2024 22:23:18 -0500 Message-Id: <20240125032328.2522472-57-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240125032328.2522472-1-xiaoyao.li@intel.com> References: <20240125032328.2522472-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.198.163.10; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.5, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.999, HK_RANDOM_FROM=1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org TDX doesn't support SMM and VMM cannot emulate SMM for TDX VMs because VMM cannot manipulate TDX VM's memory. Disable SMM for TDX VMs and error out if user requests to enable SMM. Signed-off-by: Xiaoyao Li Acked-by: Gerd Hoffmann --- target/i386/kvm/tdx.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 4fbb18135951..7eb3628763ae 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -695,11 +695,19 @@ static Notifier tdx_machine_done_notify = { int tdx_kvm_init(MachineState *ms, Error **errp) { + X86MachineState *x86ms = X86_MACHINE(ms); TdxGuest *tdx = TDX_GUEST(OBJECT(ms->cgs)); int r = 0; ms->require_guest_memfd = true; + if (x86ms->smm == ON_OFF_AUTO_AUTO) { + x86ms->smm = ON_OFF_AUTO_OFF; + } else if (x86ms->smm == ON_OFF_AUTO_ON) { + error_setg(errp, "TDX VM doesn't support SMM"); + return -EINVAL; + } + if (!tdx_caps) { r = get_tdx_capabilities(errp); if (r) {