From mboxrd@z Thu Jan 1 00:00:00 1970 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id C6057C433FE for ; Mon, 21 Nov 2022 00:28:06 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 601316B0075; Sun, 20 Nov 2022 19:28:06 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 5B1106B0095; Sun, 20 Nov 2022 19:28:06 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 478D88E0001; Sun, 20 Nov 2022 19:28:06 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 380D96B0075 for ; Sun, 20 Nov 2022 19:28:06 -0500 (EST) Received: from smtpin11.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 0E3B514066F for ; Mon, 21 Nov 2022 00:28:06 +0000 (UTC) X-FDA: 80155562172.11.26DE821 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by imf22.hostedemail.com (Postfix) with ESMTP id 568ACC0008 for ; Mon, 21 Nov 2022 00:28:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1668990485; x=1700526485; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=UBAtxkoUHDLhrJ6Ir/h/0EBfmIyd0UUVQOxLVLHPC58=; b=oF21mFeHD3pBj6+Y4GBSst9i2phjYSfIFgzJRqBsIwxbOyCKVhO4QZSe HsSGEoa2fYYFGRQmZrOqH2XaBCk5+l37dZ4+5nF4Qv9sril4Qyl0Zyia0 AO3+j0XNZEdi9UViSox6DNA/MQGRoXK1aEKXwAfashVauc7MiBz1YaBEV Bq9SZkbhE6oYh6cN5JCe4s/Bkl9KsgdBCyF/5amU/bwLE0/655lxJzVwN zWY6P+bjZIYNNPyiMj3apfLzto7bGnDaBU2BS4z1bH+vI4UT4qFaP/JuY 6KT5QArFXV7yHdE8pDgDlP1YzlAtnySkxtKd/UOB+jjsnWqVzhut9Gs0f Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10537"; a="296803734" X-IronPort-AV: E=Sophos;i="5.96,180,1665471600"; d="scan'208";a="296803734" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Nov 2022 16:28:04 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10537"; a="729825519" X-IronPort-AV: E=Sophos;i="5.96,180,1665471600"; d="scan'208";a="729825519" Received: from tomnavar-mobl.amr.corp.intel.com (HELO khuang2-desk.gar.corp.intel.com) ([10.209.176.15]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Nov 2022 16:28:00 -0800 From: Kai Huang To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: linux-mm@kvack.org, seanjc@google.com, pbonzini@redhat.com, dave.hansen@intel.com, dan.j.williams@intel.com, rafael.j.wysocki@intel.com, kirill.shutemov@linux.intel.com, ying.huang@intel.com, reinette.chatre@intel.com, len.brown@intel.com, tony.luck@intel.com, peterz@infradead.org, ak@linux.intel.com, isaku.yamahata@intel.com, chao.gao@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com, bagasdotme@gmail.com, sagis@google.com, imammedo@redhat.com, kai.huang@intel.com Subject: [PATCH v7 16/20] x86/virt/tdx: Configure TDX module with TDMRs and global KeyID Date: Mon, 21 Nov 2022 13:26:38 +1300 Message-Id: <344234642a5eb9dc1aa34410f641f596ec428ea5.1668988357.git.kai.huang@intel.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1668990485; a=rsa-sha256; cv=none; b=w+IykkTpwlaLhLF0kmGcRbjnz7T77PwYH0fIbEGQXbJLVJibSbDIz/wNhqYS57Ijs51o/u RzmzeJmbWW41lOJC5s08lfYFaknUtHDvy6LQ+6XqrK3oZBHJyCgr7QoZsSY2jWghGNZn4S s0RJKVuCw772K3MXya3cOt++iSsfwzM= ARC-Authentication-Results: i=1; imf22.hostedemail.com; dkim=none ("invalid DKIM record") header.d=intel.com header.s=Intel header.b=oF21mFeH; spf=pass (imf22.hostedemail.com: domain of kai.huang@intel.com designates 134.134.136.126 as permitted sender) smtp.mailfrom=kai.huang@intel.com; dmarc=pass (policy=none) header.from=intel.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1668990485; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=tmJYBtyDZ7or73XyG1rgNnlZS36N1OabISvnADKu2Gk=; b=DJsxF/i+oXxh4W7Eduen/8ZDOxdhkcEVx+RMEqCemZ745Hv8JNuWOjN0+BPSLyu6xoMqLw U8r09M0WQokNv8/z8gyv3nf0/h6MVn220iSynCAjnPWXxHdYrE2/6SKtmpiI8FaDmOUfKk Vk9Dp6dJt/GliFsMmU8E/thCV4Olb2g= X-Rspam-User: X-Stat-Signature: oh44dfkfbotesqo64j33rw8dpydiwcfq X-Rspamd-Queue-Id: 568ACC0008 Authentication-Results: imf22.hostedemail.com; dkim=none ("invalid DKIM record") header.d=intel.com header.s=Intel header.b=oF21mFeH; spf=pass (imf22.hostedemail.com: domain of kai.huang@intel.com designates 134.134.136.126 as permitted sender) smtp.mailfrom=kai.huang@intel.com; dmarc=pass (policy=none) header.from=intel.com X-Rspamd-Server: rspam07 X-HE-Tag: 1668990485-304205 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: After the TDX-usable memory regions are constructed in an array of TDMRs and the global KeyID is reserved, configure them to the TDX module using TDH.SYS.CONFIG SEAMCALL. TDH.SYS.CONFIG can only be called once and can be done on any logical cpu. Reviewed-by: Isaku Yamahata Signed-off-by: Kai Huang --- arch/x86/virt/vmx/tdx/tdx.c | 37 +++++++++++++++++++++++++++++++++++++ arch/x86/virt/vmx/tdx/tdx.h | 2 ++ 2 files changed, 39 insertions(+) diff --git a/arch/x86/virt/vmx/tdx/tdx.c b/arch/x86/virt/vmx/tdx/tdx.c index e2cbeeb7f0dc..3a032930e58a 100644 --- a/arch/x86/virt/vmx/tdx/tdx.c +++ b/arch/x86/virt/vmx/tdx/tdx.c @@ -979,6 +979,37 @@ static int construct_tdmrs(struct tdmr_info *tdmr_array, int *tdmr_num) return ret; } +static int config_tdx_module(struct tdmr_info *tdmr_array, int tdmr_num, + u64 global_keyid) +{ + u64 *tdmr_pa_array; + int i, array_sz; + u64 ret; + + /* + * TDMR_INFO entries are configured to the TDX module via an + * array of the physical address of each TDMR_INFO. TDX module + * requires the array itself to be 512-byte aligned. Round up + * the array size to 512-byte aligned so the buffer allocated + * by kzalloc() will meet the alignment requirement. + */ + array_sz = ALIGN(tdmr_num * sizeof(u64), TDMR_INFO_PA_ARRAY_ALIGNMENT); + tdmr_pa_array = kzalloc(array_sz, GFP_KERNEL); + if (!tdmr_pa_array) + return -ENOMEM; + + for (i = 0; i < tdmr_num; i++) + tdmr_pa_array[i] = __pa(tdmr_array_entry(tdmr_array, i)); + + ret = seamcall(TDH_SYS_CONFIG, __pa(tdmr_pa_array), tdmr_num, + global_keyid, 0, NULL, NULL); + + /* Free the array as it is not required anymore. */ + kfree(tdmr_pa_array); + + return ret; +} + /* * Detect and initialize the TDX module. * @@ -1062,11 +1093,17 @@ static int init_tdx_module(void) */ tdx_global_keyid = tdx_keyid_start; + /* Pass the TDMRs and the global KeyID to the TDX module */ + ret = config_tdx_module(tdmr_array, tdmr_num, tdx_global_keyid); + if (ret) + goto out_free_pamts; + /* * Return -EINVAL until all steps of TDX module initialization * process are done. */ ret = -EINVAL; +out_free_pamts: if (ret) tdmrs_free_pamt_all(tdmr_array, tdmr_num); else diff --git a/arch/x86/virt/vmx/tdx/tdx.h b/arch/x86/virt/vmx/tdx/tdx.h index a737f2b51474..c26bab2555ca 100644 --- a/arch/x86/virt/vmx/tdx/tdx.h +++ b/arch/x86/virt/vmx/tdx/tdx.h @@ -19,6 +19,7 @@ #define TDH_SYS_INIT 33 #define TDH_SYS_LP_INIT 35 #define TDH_SYS_LP_SHUTDOWN 44 +#define TDH_SYS_CONFIG 45 struct cmr_info { u64 base; @@ -86,6 +87,7 @@ struct tdmr_reserved_area { } __packed; #define TDMR_INFO_ALIGNMENT 512 +#define TDMR_INFO_PA_ARRAY_ALIGNMENT 512 struct tdmr_info { u64 base; -- 2.38.1