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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BD3DDC433F5 for ; Sun, 13 Mar 2022 10:51:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234325AbiCMKwV (ORCPT ); Sun, 13 Mar 2022 06:52:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41664 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234241AbiCMKv4 (ORCPT ); Sun, 13 Mar 2022 06:51:56 -0400 Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4684437AA0; Sun, 13 Mar 2022 03:50:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1647168637; x=1678704637; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=EFAqTydulIlOdHgbokdDqDaAGrxegpZWdbGMR3Kq/z0=; b=g5h+Dhg1Ms2RpCDsohLe8VSNp6GTX8+QfbNzWdzZT6TIo7oAv8jY775o uo9eJu0TNXEq0OWknT3Sye0r660gLUzp7kx51jdX9VM3WP8ScCOPK0mQ7 6eMl22/97UKT3KDvGnh6snBwwHWGtVobqZzW9RCQEx798gNxtCmk+t432 SuOyE893F1KdwdNorDBNTAbf7yR30BkvMR3U7YBfhoLlanN331jFygfnf cFS1DCQ6QKtth7Wvuf94b9sefg2DkP61p7jX5sVBxB9PEw7gUvye9xnrS 6sX61yasloiGvgKAlHvTMZaawibyNbAIOwV6LEJ5SZY5Yf3RJML5rtOoU g==; X-IronPort-AV: E=McAfee;i="6200,9189,10284"; a="254689533" X-IronPort-AV: E=Sophos;i="5.90,178,1643702400"; d="scan'208";a="254689533" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Mar 2022 03:50:36 -0700 X-IronPort-AV: E=Sophos;i="5.90,178,1643702400"; d="scan'208";a="645448125" Received: from mvideche-mobl1.amr.corp.intel.com (HELO khuang2-desk.gar.corp.intel.com) ([10.251.130.249]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Mar 2022 03:50:33 -0700 From: Kai Huang To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: dave.hansen@intel.com, seanjc@google.com, pbonzini@redhat.com, kirill.shutemov@linux.intel.com, sathyanarayanan.kuppuswamy@linux.intel.com, peterz@infradead.org, tony.luck@intel.com, ak@linux.intel.com, dan.j.williams@intel.com, isaku.yamahata@intel.com, kai.huang@intel.com Subject: [PATCH v2 08/21] x86/virt/tdx: Do logical-cpu scope TDX module initialization Date: Sun, 13 Mar 2022 23:49:48 +1300 Message-Id: X-Mailer: git-send-email 2.35.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Logical-cpu scope initialization requires calling TDH.SYS.LP.INIT on all BIOS-enabled cpus, otherwise the TDH.SYS.CONFIG SEAMCALL will fail. TDH.SYS.LP.INIT can be called concurrently on all cpus. Following global initialization, do the logical-cpu scope initialization by calling TDH.SYS.LP.INIT on all online cpus. Whether all BIOS-enabled cpus are online is not checked here for simplicity. The user of TDX should guarantee all BIOS-enabled cpus are online. Signed-off-by: Kai Huang --- arch/x86/virt/vmx/tdx.c | 12 ++++++++++++ arch/x86/virt/vmx/tdx.h | 1 + 2 files changed, 13 insertions(+) diff --git a/arch/x86/virt/vmx/tdx.c b/arch/x86/virt/vmx/tdx.c index 45e7404b5d81..4b0c285d844b 100644 --- a/arch/x86/virt/vmx/tdx.c +++ b/arch/x86/virt/vmx/tdx.c @@ -461,6 +461,13 @@ static int __tdx_detect(void) return -ENODEV; } +static int tdx_module_init_cpus(void) +{ + struct seamcall_ctx sc = { .fn = TDH_SYS_LP_INIT }; + + return seamcall_on_each_cpu(&sc); +} + static int init_tdx_module(void) { int ret; @@ -470,6 +477,11 @@ static int init_tdx_module(void) if (ret) goto out; + /* Logical-cpu scope initialization */ + ret = tdx_module_init_cpus(); + if (ret) + goto out; + /* * Return -EFAULT until all steps of TDX module * initialization are done. diff --git a/arch/x86/virt/vmx/tdx.h b/arch/x86/virt/vmx/tdx.h index f0983b1936d8..b8cfdd6e12f3 100644 --- a/arch/x86/virt/vmx/tdx.h +++ b/arch/x86/virt/vmx/tdx.h @@ -39,6 +39,7 @@ struct p_seamldr_info { * TDX module SEAMCALL leaf functions */ #define TDH_SYS_INIT 33 +#define TDH_SYS_LP_INIT 35 #define TDH_SYS_LP_SHUTDOWN 44 struct tdx_module_output; -- 2.35.1