From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) (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 E8BAB313E30 for ; Fri, 19 Sep 2025 14:22:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.15 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758291766; cv=none; b=csT7sFewnF/XFd2mL3NzPobt1oDS4ms/sl0og2Le25KaPwPqLLpZmDz88Ym9shljHS4H8nfVRLFXI/sh38Qhz/OU+mS0H8+oZu8tov9H+S5V3Kuh3Wr0O5k+ZXlQjS4SWmvRscTLujJGcOaHqfkN//ynBHFT9TkiTLFjI9jj9gQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758291766; c=relaxed/simple; bh=eJ8eVwYxUVNsKnOyBrSe/dewHJwVRE0Ci5rwxy054xM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Sg22yYoG1uv7wAH5yMXY8JSP9tf35w9o+hCZxCNFOfDHWN+6YWr5xaFwG0uOphNIgT+rRz/JQO4J6kxqfP9He4prEuoK4JR6EpotZpc7MExP53AjZ4SK//hKakvpxUgda7/Ow/AdqC6MOg49EnIXs4LUK3aVsk7Ss9b/0gXGQhM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=dqZxjG7d; arc=none smtp.client-ip=192.198.163.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="dqZxjG7d" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1758291765; x=1789827765; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=eJ8eVwYxUVNsKnOyBrSe/dewHJwVRE0Ci5rwxy054xM=; b=dqZxjG7d8z+9XGzVCs4AzJ9BpN8zuP4TUFmD4wWDy2dPM30clg1hPe+L 6WE6W9oNIjKNK9uzB3Ntb2aQuatsAIZ5MXjg/SP9YsIxwTdS7aJtF4H9D MNdu6n+KiZXwxbnTXstgLtVqlrAzDxzGye6rWGCRaFriSkuGunXfiJd2K TRDQPJDM06tbWXcoMfJSvtKarxwFWZDHWix048DXLeo41ELgqom32ev+v 5HqqQuOC0dUelffNC4KEbG1kO5QZPaW4FV+UyL4pDJjOKhtGNbbSpaxe1 Yn76jqBC84tY2L+RElRjwkN1pBD20lWefQYpqKAsrrkZKqCHMbu4Ywf3Q w==; X-CSE-ConnectionGUID: Ubx8Vy+XRge1OUBgoC2iWA== X-CSE-MsgGUID: c9HVPdu4QU6Kozqm6NIoNQ== X-IronPort-AV: E=McAfee;i="6800,10657,11557"; a="60750548" X-IronPort-AV: E=Sophos;i="6.18,278,1751266800"; d="scan'208";a="60750548" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Sep 2025 07:22:39 -0700 X-CSE-ConnectionGUID: ZRX2vZWKQ5qkUe+Lu+/lQQ== X-CSE-MsgGUID: cYgtQgczR+qonNijiVjXtQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,278,1751266800"; d="scan'208";a="176655033" Received: from dwillia2-desk.jf.intel.com ([10.88.27.145]) by fmviesa010.fm.intel.com with ESMTP; 19 Sep 2025 07:22:39 -0700 From: Dan Williams To: linux-coco@lists.linux.dev, linux-pci@vger.kernel.org Cc: xin@zytor.com, chao.gao@intel.com, Xu Yilun Subject: [RFC PATCH 14/27] TODO: x86/virt/tdx: Read TDX Connect global metadata for TDX Connect Date: Fri, 19 Sep 2025 07:22:23 -0700 Message-ID: <20250919142237.418648-15-dan.j.williams@intel.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250919142237.418648-1-dan.j.williams@intel.com> References: <20250919142237.418648-1-dan.j.williams@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 From: Xu Yilun Add several global metadata fields for TDX Connect. These metadata field specify the number of metadata pages needed for IOMMU/IDE/SPDM setup. TODO: This patch should be auto-generated by script but for now the TDX Connect part is not published in global_metadata.json so make the patch manually. The correct way should be: The code change is auto-generated by re-running the script in [1] after uncommenting the "td_conf" and "td_ctrl" part to regenerate the tdx_global_metadata.{hc} and update them to the existing ones in the kernel. #python tdx.py global_metadata.json tdx_global_metadata.h \ tdx_global_metadata.c The 'global_metadata.json' can be fetched from [1]. Link: https://cdrdv2.intel.com/v1/dl/getContent/795381 [1] 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 69be16c1e6ec..63e0a6e7bf29 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 int get_tdx_sys_info_ext(struct tdx_sys_info_ext *sysinfo_ext) return ret; } +static 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 int get_tdx_sys_info(struct tdx_sys_info *sysinfo) { int ret = 0; @@ -107,6 +124,7 @@ static 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; } -- 2.51.0