From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7967E26F299 for ; Mon, 17 Nov 2025 02:38:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.10 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763347124; cv=none; b=F0zpSdji/oxAvTEUkQ4H9Ysaz5KDrXLPTOcCoEWydJiXbIgwR9QDmNzrtdmBEd/R3Cmyxtex47YFNIxtaZJXjj1MLu5N3PAEtihHeI21ApLcF0wMrFv8gEMK8tFOxESK5msaA8d9+Jgbad8NwtPHHKrQsCyot3qlLeHZ68Omwlk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763347124; c=relaxed/simple; bh=D6+r74jIPGap2uXcP9zcW1TNnT8dgkFvQ4v5fobURo4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=a710mokBY4ydqGXZxlvWuLyoxjAWz7jU91LurxDTU9wAZapic0VMZstBE8sO0wKcvuyer6DeAELTWLsbpym/+YlOxLzXG4sWttdES+9xFHucDW1PvONaXT5RJe5cfAFYJAlgYP1wD0jH80l5SwKU+Byr0ltnC7Oj8brJXGj45Mg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=O2tUZ9XP; arc=none smtp.client-ip=198.175.65.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="O2tUZ9XP" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1763347123; x=1794883123; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=D6+r74jIPGap2uXcP9zcW1TNnT8dgkFvQ4v5fobURo4=; b=O2tUZ9XPj3UMgt5QkAaQ+gx2hff8RB/yxpu4FccsyteEDEbEvT3SZ5s3 vM9AWRIb4AeFF1h/bUXCFYIeRfo2GGzef91JSNkIOcmkRMdChAbuli3sz s2xctP05g+j531VtOzKm0XnOVFck5zan2YXEx2Sz7PHMcu8Tfwfgd+WvR TwEgZREtF04nhWiw9j7WBfrkU1SLv2S2dPTyB2rtB0YZdE2hy1DbJVFZz 8/cCiLGIlf2tpzhoAJwWWhPcVNb+Kxn+yItRTmeHBBu8z6o1OG1T3kJlk XH9xpU2Fm5DMr1jPD9QSeIFFsA4iBiATu41HjebhjFMly0tUuTyzLeAGj A==; X-CSE-ConnectionGUID: yIUThOoOSfuBcIsxusvonw== X-CSE-MsgGUID: ozaTBmjQQoWoBL3r7N466A== X-IronPort-AV: E=McAfee;i="6800,10657,11615"; a="82729553" X-IronPort-AV: E=Sophos;i="6.19,310,1754982000"; d="scan'208";a="82729553" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Nov 2025 18:38:43 -0800 X-CSE-ConnectionGUID: RuE5gwsFSaKm95PZzhciQQ== X-CSE-MsgGUID: LT9fXAOkQ8yaAhMOUTWWEA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,310,1754982000"; d="scan'208";a="227658302" Received: from yilunxu-optiplex-7050.sh.intel.com ([10.239.159.165]) by orviesa001.jf.intel.com with ESMTP; 16 Nov 2025 18:38:39 -0800 From: Xu Yilun To: linux-coco@lists.linux.dev, linux-pci@vger.kernel.org Cc: chao.gao@intel.com, dave.jiang@intel.com, baolu.lu@linux.intel.com, yilun.xu@linux.intel.com, yilun.xu@intel.com, zhenzhong.duan@intel.com, kvm@vger.kernel.org, rick.p.edgecombe@intel.com, dave.hansen@linux.intel.com, dan.j.williams@intel.com, kas@kernel.org, x86@kernel.org Subject: [PATCH v1 13/26] x86/virt/tdx: Read TDX Connect global metadata for TDX Connect Date: Mon, 17 Nov 2025 10:22:57 +0800 Message-Id: <20251117022311.2443900-14-yilun.xu@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20251117022311.2443900-1-yilun.xu@linux.intel.com> References: <20251117022311.2443900-1-yilun.xu@linux.intel.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add several global metadata fields for TDX Connect. These metadata field specify the number of metadata pages needed for IOMMU/IDE/SPDM setup. Signed-off-by: Xu Yilun Signed-off-by: Dan Williams --- arch/x86/include/asm/tdx_global_metadata.h | 8 ++++++++ arch/x86/virt/vmx/tdx/tdx_global_metadata.c | 18 ++++++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/arch/x86/include/asm/tdx_global_metadata.h b/arch/x86/include/asm/tdx_global_metadata.h index 2aa741190b93..e7948bca671a 100644 --- a/arch/x86/include/asm/tdx_global_metadata.h +++ b/arch/x86/include/asm/tdx_global_metadata.h @@ -39,12 +39,20 @@ struct tdx_sys_info_ext { u8 ext_required; }; +struct tdx_sys_info_connect { + u16 ide_mt_page_count; + u16 spdm_mt_page_count; + u16 iommu_mt_page_count; + u16 spdm_max_dev_info_pages; +}; + struct tdx_sys_info { struct tdx_sys_info_features features; struct tdx_sys_info_tdmr tdmr; struct tdx_sys_info_td_ctrl td_ctrl; struct tdx_sys_info_td_conf td_conf; struct tdx_sys_info_ext ext; + struct tdx_sys_info_connect connect; }; #endif diff --git a/arch/x86/virt/vmx/tdx/tdx_global_metadata.c b/arch/x86/virt/vmx/tdx/tdx_global_metadata.c index c3b2e2748b3e..b9029c3f9b32 100644 --- a/arch/x86/virt/vmx/tdx/tdx_global_metadata.c +++ b/arch/x86/virt/vmx/tdx/tdx_global_metadata.c @@ -98,6 +98,23 @@ static __init int get_tdx_sys_info_ext(struct tdx_sys_info_ext *sysinfo_ext) return ret; } +static __init int get_tdx_sys_info_connect(struct tdx_sys_info_connect *sysinfo_connect) +{ + int ret = 0; + u64 val; + + if (!ret && !(ret = read_sys_metadata_field(0x3000000100000001, &val))) + sysinfo_connect->ide_mt_page_count = val; + if (!ret && !(ret = read_sys_metadata_field(0x3000000100000002, &val))) + sysinfo_connect->spdm_mt_page_count = val; + if (!ret && !(ret = read_sys_metadata_field(0x3000000100000003, &val))) + sysinfo_connect->iommu_mt_page_count = val; + if (!ret && !(ret = read_sys_metadata_field(0x3000000100000007, &val))) + sysinfo_connect->spdm_max_dev_info_pages = val; + + return ret; +} + static __init int get_tdx_sys_info(struct tdx_sys_info *sysinfo) { int ret = 0; @@ -107,6 +124,7 @@ static __init int get_tdx_sys_info(struct tdx_sys_info *sysinfo) ret = ret ?: get_tdx_sys_info_td_ctrl(&sysinfo->td_ctrl); ret = ret ?: get_tdx_sys_info_td_conf(&sysinfo->td_conf); ret = ret ?: get_tdx_sys_info_ext(&sysinfo->ext); + ret = ret ?: get_tdx_sys_info_connect(&sysinfo->connect); return ret; } -- 2.25.1