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 X-Spam-Level: X-Spam-Status: No, score=-10.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C5E13C47082 for ; Tue, 8 Jun 2021 23:19:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A9C3F61178 for ; Tue, 8 Jun 2021 23:19:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234989AbhFHXVl (ORCPT ); Tue, 8 Jun 2021 19:21:41 -0400 Received: from mga05.intel.com ([192.55.52.43]:13211 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234389AbhFHXVk (ORCPT ); Tue, 8 Jun 2021 19:21:40 -0400 IronPort-SDR: dsQbvRzjSlK+hSX3+2kcjPSY1uiOHMPy3qGRV/gzAhZqFXpo4fPkeB8k/gPl8mcz/aMDVvCL/2 k8XbDsXbeqoQ== X-IronPort-AV: E=McAfee;i="6200,9189,10009"; a="290592962" X-IronPort-AV: E=Sophos;i="5.83,259,1616482800"; d="scan'208";a="290592962" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Jun 2021 16:19:46 -0700 IronPort-SDR: i7Ms0x9+i4CvbocdhHNYInqqzjW97ltP0lsLX133WWPol3S1sefgoOTBDtq+C+YYl81ciUVYLs sbKtpJRImrPQ== X-IronPort-AV: E=Sophos;i="5.83,259,1616482800"; d="scan'208";a="402240572" Received: from dabarred-mobl1.amr.corp.intel.com (HELO skuppusw-mobl5.amr.corp.intel.com) ([10.254.185.80]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Jun 2021 16:19:45 -0700 Subject: Re: [PATCH v6 1/1] x86/acpi, x86/boot: Add multiprocessor wake-up support To: "Rafael J. Wysocki" , Thomas Gleixner , Peter Zijlstra Cc: Rafael J Wysocki , Ingo Molnar , "H . Peter Anvin" , Len Brown , Kuppuswamy Sathyanarayanan , Sean Christopherson , Andi Kleen , the arch/x86 maintainers , Linux Kernel Mailing List , ACPI Devel Maling List References: <20210601142103.6378-1-sathyanarayanan.kuppuswamy@linux.intel.com> From: "Kuppuswamy, Sathyanarayanan" Message-ID: Date: Tue, 8 Jun 2021 16:19:45 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 6/1/21 10:36 AM, Rafael J. Wysocki wrote: >> As per ACPI specification r6.4, sec 5.2.12.19, a new sub >> structure – multiprocessor wake-up structure - is added to the >> ACPI Multiple APIC Description Table (MADT) to describe the >> information of the mailbox. If a platform firmware produces the >> multiprocessor wake-up structure, then OS may use this new >> mailbox-based mechanism to wake up the APs. >> >> Add ACPI MADT wake table parsing support for x86 platform and if >> MADT wake table is present, update apic->wakeup_secondary_cpu with >> new API which uses MADT wake mailbox to wake-up CPU. >> >> Co-developed-by: Sean Christopherson >> Signed-off-by: Sean Christopherson >> Signed-off-by: Kuppuswamy Sathyanarayanan >> Reviewed-by: Andi Kleen > All of my comments have been addressed, so > > Reviewed-by: Rafael J. Wysocki Thomas/Peter Z, Gentle ping. Any comments? > -- Sathyanarayanan Kuppuswamy Linux Kernel Developer