From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ingo Molnar Subject: Re: EFI reboot vs. ACPI reboot (was: Re: [tip:x86/urgent] x86/reboot, efi: Use EFI reboot for Acer TravelMate X514-51T) Date: Wed, 17 Apr 2019 20:23:41 +0200 Message-ID: <20190417182341.GA5140@gmail.com> References: <20190412080152.3718-1-jian-hong@endlessm.com> <20190416082042.GA69717@gmail.com> <20190417061650.GA31060@gmail.com> <17516564-37AC-4F77-9C0D-0DD71F8045EA@zytor.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: "Prakhya, Sai Praneeth" Cc: Ard Biesheuvel , "H. Peter Anvin" , Daniel Drake , Peter Zijlstra , Borislav Petkov , Thomas Gleixner , Linux Kernel , Linus Torvalds , Jian-Hong Pan , Matt Fleming , linux-efi , "Brown, Len" , "linux-tip-commits@vger.kernel.org" , Endless Linux Upstreaming Team List-Id: linux-efi@vger.kernel.org * Prakhya, Sai Praneeth wrote: > I will ask around internally to check if it is a good idea to make EFI > reboot the default method when the machine is booted in EFI mode. Or whether there's some robust signature that indicates "modern EFI system where EFI reboot is the primary method"? Major EFI version or ACPI version or such? Thanks, Ingo 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=-0.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FSL_HELO_FAKE,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_MUTT 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 0AA80C282DA for ; Wed, 17 Apr 2019 18:23:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CDC2020674 for ; Wed, 17 Apr 2019 18:23:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1555525427; bh=pXTvCfPBdoIeE8zuaKezd4hDBUYum4AWnKkD8VDICGg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=rK3iiG3kw+NbRcDKaNTyoP2Dqa/ebcVOQlmDlU3pys6h7FEOr2Ez4hCjWCraBXsk/ AzVfHw43btBZ/trAnyyPUYBa6DPgPf5GkrB54bGRg2Rpn6KVEaEWL80nZzapmfV6W0 Ei8o1Y8FR2bFKyd1RQvwe/t1OwHW9nHvRIacZZQk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730308AbfDQSXr (ORCPT ); Wed, 17 Apr 2019 14:23:47 -0400 Received: from mail-wr1-f53.google.com ([209.85.221.53]:34100 "EHLO mail-wr1-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728373AbfDQSXr (ORCPT ); Wed, 17 Apr 2019 14:23:47 -0400 Received: by mail-wr1-f53.google.com with SMTP id w16so3249672wrl.1; Wed, 17 Apr 2019 11:23:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=1POMudkOg7ZMnCSs+YnvPunwdXlUfWUqcoeFnoOiFR4=; b=P8L+gqS1jjv6UZdPpAUWU48A+vC9wN8UGx25cMYdiio1+TRuRdwC+M8Vl/jEZnYKY3 emi6v/y7+tOCEOUc13PhoipVcyR5MgTus4xhCd1x06m/khdKHPXwpD2KzlgDuIq7mgqb 6MrgLAqpoYwxaJMpWhykh8ZMlK4ir3F7c3QRIDyfL0ddXtWKwuTg0bbxvUTf2LmPE/Wg OATd8B57YgymaWiwLaezOYwhZIPrLG1ZmRWlV77QFwphT6KR0RH9uRG62udVP/4zTHw3 9Xdz5Lt25g5DY6O74wrAoiUXnRT1aSbgXp7U9Ruw0yn0s3UvfmG3kj6RXeoNRUS8gt4r kojg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=1POMudkOg7ZMnCSs+YnvPunwdXlUfWUqcoeFnoOiFR4=; b=uoGOnJD3/2dOTWlt35vIOvg3F0U9/P4afb4JaMPN47eAFoiPD73hcnH8xISlegX0E4 CkvyF0OqMRnUKRwccXzw9HkvWtky98hiIxV/6/nkU319m8tTlGJbnsVIG9Dwe+CETdxV oAJ+P8eUpDOen0kg/ymBI0G1bS5++/kTaWlxN2mgjhGwnmbOMLhStiAH5sTd8vjRW1Yw u7YvYsP+aq6i0RnDks2zaaacwsGWFJYF8Fnhni+5mIJf2dveS5u661DzlQ+RYDuHpErg KheHUHjjF1mqEIHn5uDR0c7JbSPrW/SCCZxKJIly7wUe2pf4JrW/I0QKF0g+mgGD1Fgt +zlQ== X-Gm-Message-State: APjAAAUEMJ4uwDMsrtU8CxuZLKT4ggnefNVFV61U2ccaZ0kb5d7PrJAp O4hX5OmQ1sOiZV2QHz0tYHQ= X-Google-Smtp-Source: APXvYqwxbqNW/plFqmrGhB2G5xMzZ+dlX6W7BKgxwDFj050DWrNZFKxiqjk0N4Ko/qCBcyzwXJe0ig== X-Received: by 2002:adf:ef0c:: with SMTP id e12mr56645812wro.170.1555525425169; Wed, 17 Apr 2019 11:23:45 -0700 (PDT) Received: from gmail.com (2E8B0CD5.catv.pool.telekom.hu. [46.139.12.213]) by smtp.gmail.com with ESMTPSA id o10sm88391387wru.54.2019.04.17.11.23.43 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 17 Apr 2019 11:23:44 -0700 (PDT) Date: Wed, 17 Apr 2019 20:23:41 +0200 From: Ingo Molnar To: "Prakhya, Sai Praneeth" Cc: Ard Biesheuvel , "H. Peter Anvin" , Daniel Drake , Peter Zijlstra , Borislav Petkov , Thomas Gleixner , Linux Kernel , Linus Torvalds , Jian-Hong Pan , Matt Fleming , linux-efi , "Brown, Len" , "linux-tip-commits@vger.kernel.org" , Endless Linux Upstreaming Team Subject: Re: EFI reboot vs. ACPI reboot (was: Re: [tip:x86/urgent] x86/reboot, efi: Use EFI reboot for Acer TravelMate X514-51T) Message-ID: <20190417182341.GA5140@gmail.com> References: <20190412080152.3718-1-jian-hong@endlessm.com> <20190416082042.GA69717@gmail.com> <20190417061650.GA31060@gmail.com> <17516564-37AC-4F77-9C0D-0DD71F8045EA@zytor.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-efi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org Message-ID: <20190417182341.ntubu4HKMSAiKoICkGGxA3dIFmweuQvLvimwzQyqzU4@z> * Prakhya, Sai Praneeth wrote: > I will ask around internally to check if it is a good idea to make EFI > reboot the default method when the machine is booted in EFI mode. Or whether there's some robust signature that indicates "modern EFI system where EFI reboot is the primary method"? Major EFI version or ACPI version or such? Thanks, Ingo