From nobody Sun Dec 14 12:13:22 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.libvirt.org designates 8.43.85.245 as permitted sender) client-ip=8.43.85.245; envelope-from=devel-bounces@lists.libvirt.org; helo=lists.libvirt.org; Authentication-Results: mx.zohomail.com; dkim=fail header.i=@intel.com; spf=pass (zohomail.com: domain of lists.libvirt.org designates 8.43.85.245 as permitted sender) smtp.mailfrom=devel-bounces@lists.libvirt.org; dmarc=fail(p=none dis=none) header.from=intel.com Return-Path: Received: from lists.libvirt.org (lists.libvirt.org [8.43.85.245]) by mx.zohomail.com with SMTPS id 1751264592404746.9910561184881; Sun, 29 Jun 2025 23:23:12 -0700 (PDT) Received: by lists.libvirt.org (Postfix, from userid 996) id 6D47D14E0; Mon, 30 Jun 2025 02:23:11 -0400 (EDT) Received: from lists.libvirt.org (localhost [IPv6:::1]) by lists.libvirt.org (Postfix) with ESMTP id 60003145D; Mon, 30 Jun 2025 02:21:52 -0400 (EDT) Received: by lists.libvirt.org (Postfix, from userid 996) id 0556E1423; Mon, 30 Jun 2025 02:21:46 -0400 (EDT) Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.libvirt.org (Postfix) with ESMTPS id F187713BA for ; Mon, 30 Jun 2025 02:21:34 -0400 (EDT) Received: from orviesa007.jf.intel.com ([10.64.159.147]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jun 2025 23:21:35 -0700 Received: from spr-s2600bt.bj.intel.com ([10.240.192.127]) by orviesa007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jun 2025 23:21:32 -0700 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on lists.libvirt.org X-Spam-Level: X-Spam-Status: No, score=-3.1 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED, RCVD_IN_VALIDITY_RPBL_BLOCKED,RCVD_IN_VALIDITY_SAFE_BLOCKED, SPF_HELO_NONE autolearn=unavailable autolearn_force=no version=3.4.4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1751264495; x=1782800495; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=vUREPmr5YkyBUeSAuKXvMmRkyrnyAOXSRB/rX5t3PNQ=; b=XGa8AXrxce9RKbr2Dr7pq61k8O6H2yycqtR6/E9OVQ6oF9vns273wFGb aT75DrLh9LV3xIj8S1eUlRa0zlJuSQRA3btnbj1mYrpUQuDBun4EpYA1B l+08b5BoyIbcwj1GlB6T1XPaTiQYMjpdAkIgG0Ljyu5mC7K2RNst3ZJ2Q Gvr0sfqPgInLmhVTZ4uEhyolpNuNxPww+I5HoCgMAjzNAbanpH4QvpGxG W3vuaPvX6gwzWGzqI0PpuhaJXtO3AaZXVZiwJOirPmZUrGqlYl9vQ0mWw u8tA64uJ0sQHF511pbKJXqsIRFlzdOfuRVvqvw6NvdhyVHYAk9GA86Uja A==; X-CSE-ConnectionGUID: pm+hnb1USMSVKRjJr7uSMg== X-CSE-MsgGUID: Ryg4l1tuTDuo/cUPhsWMhQ== X-IronPort-AV: E=McAfee;i="6800,10657,11479"; a="70912503" X-IronPort-AV: E=Sophos;i="6.16,277,1744095600"; d="scan'208";a="70912503" X-CSE-ConnectionGUID: r3scljJzRA+xyzb4pxVDeQ== X-CSE-MsgGUID: uuouA0o9R5+LzQEaQvaK0w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.16,277,1744095600"; d="scan'208";a="153549235" From: Zhenzhong Duan To: devel@lists.libvirt.org Subject: [PATCH v3 02/21] qemu: Check if INTEL Trust Domain Extention support is enabled Date: Mon, 30 Jun 2025 14:17:13 +0800 Message-Id: <20250630061732.303374-3-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250630061732.303374-1-zhenzhong.duan@intel.com> References: <20250630061732.303374-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Message-ID-Hash: Z4YGLCU6BR6UMWJDEPPCLCLIO2GIZTTU X-Message-ID-Hash: Z4YGLCU6BR6UMWJDEPPCLCLIO2GIZTTU X-MailFrom: zhenzhong.duan@intel.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-config-1; header-match-config-2; header-match-config-3; header-match-devel.lists.libvirt.org-0 CC: phrdina@redhat.com, pkrempa@redhat.com, jjongsma@redhat.com, jsuchane@redhat.com, chenyi.qiang@intel.com, isaku.yamahata@intel.com, xiaoyao.li@intel.com, chao.p.peng@intel.com, Zhenzhong Duan X-Mailman-Version: 3.2.2 Precedence: list List-Id: Development discussions about the libvirt library & tools Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1751264593979116600 Content-Type: text/plain; charset="utf-8" Implement TDX check in order to generate domain feature capability correctly in case the availability of the feature changed. For INTEL TDX the verification is: - checking if "/sys/module/kvm_intel/parameters/tdx" contains the value 'Y': meaning TDX is enabled in the host kernel. Signed-off-by: Zhenzhong Duan Reviewed-by: Daniel P. Berrang=C3=A9 Reviewed-by: Xiaoyao Li --- src/qemu/qemu_capabilities.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index b02f8e7a01..732c89fe29 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -5322,6 +5322,24 @@ virQEMUCapsKVMSupportsSecureGuestAMD(void) } =20 =20 +/* + * Check whether INTEL Trust Domain Extention (x86) is enabled + */ +static bool +virQEMUCapsKVMSupportsSecureGuestTDX(void) +{ + g_autofree char *modValue =3D NULL; + + if (virFileReadValueString(&modValue, "/sys/module/kvm_intel/parameter= s/tdx") < 0) + return false; + + if (modValue[0] !=3D 'Y') + return false; + + return true; +} + + /* * Check whether the secure guest functionality is enabled. * See the specific architecture function for details on the verifications= made. @@ -5335,7 +5353,8 @@ virQEMUCapsKVMSupportsSecureGuest(void) return virQEMUCapsKVMSupportsSecureGuestS390(); =20 if (ARCH_IS_X86(arch)) - return virQEMUCapsKVMSupportsSecureGuestAMD(); + return virQEMUCapsKVMSupportsSecureGuestAMD() || + virQEMUCapsKVMSupportsSecureGuestTDX(); =20 return false; } --=20 2.34.1