Received: by 10.223.185.116 with SMTP id b49csp2396318wrg; Mon, 12 Feb 2018 08:54:55 -0800 (PST) X-Google-Smtp-Source: AH8x22788rrrrz7QkdOvl9O+r5MHV3AFHWyafkNkY6p4BbpVYwHN9sRcXI1JF66vAiohxnkwOt8W X-Received: by 10.99.138.74 with SMTP id y71mr7745535pgd.419.1518454495513; Mon, 12 Feb 2018 08:54:55 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1518454495; cv=none; d=google.com; s=arc-20160816; b=pd2y/k85fty8GYvXvITrlxTphJKtn924P+BAfI4bJme47/mQRX9o++tFleQRbn/Y3h VqVz/NjCAzG5otc7pgKhOXuutRmmoXagDx0/Iz86Kr5gzt/XG3pPdr9UoNCE7Ptvby4W /EsyjvXDaT7CmLyH3XumzAkjJio3cc/iaXH8HsC67N9QkjS/6LYltQIfmHeUY3tFHiB7 dBvocffUCe+4OosqHlzY8LICBBVSrlX3BAHdLO3QykDbFWxiA3gwUup6iDGQ3NWS3Bm1 VPLpsLrqNIlNxEqyRyYYeYrSObSzRyoYdRlSYseAGYg89uylrFtGREuhp1Wk8074RghX 69vA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:from:references:cc:to:subject:dmarc-filter :dkim-signature:dkim-signature:arc-authentication-results; bh=axbQjgZ9niId/qezAxKm60lyUmLKRsJtnLGsIvTjP/w=; b=i2skwpbrRWTjbmiMGlL9vwC0tBwFzLlgExvWAKc3lB/3UoM0eH5+6PUOV17IHfJ1Dx Y5mhsYAPgyNvCQMUktEHIQtn3m8SSvqbIxgcYMO2M1BA0N5BQLCidT9jbb1ouyM6FxVw 80vybESxWZnp1eQI2JW4dnGkkIUJRP8JVf3SCq6LhG3ok7eazlrB2D2j0JSRE6fQt3mR gUh02XqrtO2GUygjj4hCjQRzonQkpAAEx1nKJwycFH8dz4ndvcxz3g2JmnWSWgnpYz/M K3o56yfoScB367dNq5rstydBvFMu82sVgHV8tT7KHWVoWcslfuaERJepk0VbUPWEUq9W 5+Yw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@codeaurora.org header.s=default header.b=NAjTiiWs; dkim=pass header.i=@codeaurora.org header.s=default header.b=MgzvhQRa; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id e10-v6si4020865pls.543.2018.02.12.08.54.40; Mon, 12 Feb 2018 08:54:55 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@codeaurora.org header.s=default header.b=NAjTiiWs; dkim=pass header.i=@codeaurora.org header.s=default header.b=MgzvhQRa; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754342AbeBLOnx (ORCPT + 99 others); Mon, 12 Feb 2018 09:43:53 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:51880 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754321AbeBLOnt (ORCPT ); Mon, 12 Feb 2018 09:43:49 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 2189060F78; Mon, 12 Feb 2018 14:43:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1518446629; bh=e+8hDNuRNHTyud1KnHGPOKFMBRe8cAQkerdtxG0yjjU=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=NAjTiiWsb4hlDYAR0QrNZdhNoKrmM6p3V7IP0FslcXj+1W+BdZ85ttHPMOxbnhEwp CLw+H3v1YWCQ7LgmoA1Rf5yvZUL/MNUXP0b3kiEGH9tEeZbfNkhjd+06ro91BdYwJS dak64WrA2GGUtxc2Hsx4M9E5V7k2bm1xm/cYGfeI= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_SIGNED,T_DKIM_INVALID autolearn=no autolearn_force=no version=3.4.0 Received: from [192.168.1.125] (cpe-24-28-70-126.austin.res.rr.com [24.28.70.126]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: timur@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 7C26F608BF; Mon, 12 Feb 2018 14:43:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1518446628; bh=e+8hDNuRNHTyud1KnHGPOKFMBRe8cAQkerdtxG0yjjU=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=MgzvhQRa56yU0ZeZNZJu4X/XQNMZKb6PUB3CUudcBUjCyhyJzP005DFWGiViZHrkD DGLCPPTkQ/gkCcdMAW9h7iP1RR0SYL796BMvDktSbrRZRuGnuDdbIybzLJ2jIJCy8i 4zy4NAwfxfYHUSJY/JP5lbV18hhaOdfMGvCsd4lY= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 7C26F608BF Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=timur@codeaurora.org Subject: Re: [PATCH] acpi, spcr: Make SPCR available to x86 To: Prarit Bhargava , Peter Zijlstra Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, linux-serial@vger.kernel.org, Bhupesh Sharma , Lv Zheng , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, Jonathan Corbet , Catalin Marinas , Will Deacon , graeme.gregory@linaro.org, mark.salter@redhat.com References: <20180118150951.28964-1-prarit@redhat.com> <20180212133429.GC25314@hirez.programming.kicks-ass.net> <1e69fffc-1c3b-8cc0-f1cb-695de5ccdcb5@redhat.com> From: Timur Tabi Message-ID: <953565bd-436b-c1fe-d3c5-cde731dee83d@codeaurora.org> Date: Mon, 12 Feb 2018 08:43:45 -0600 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 In-Reply-To: <1e69fffc-1c3b-8cc0-f1cb-695de5ccdcb5@redhat.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2/12/18 7:47 AM, Prarit Bhargava wrote: > ACPI SPCR is used by a vendor to define the serial console for a system. If > SPCR exists a user can add kernel parameter "earlycon" (no extra kernel > parameters) and the console will work out-of-the-box. "earlycon" is needed only for an *early* console. You don't need any command line parameters for a normal console to work with SPCR. -- Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.