From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-1541957-1518447003-2-1538095312204190492 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no ("Email failed DMARC policy for domain") X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.001, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='com', MailFrom='org' X-Spam-charsets: plain='windows-1252' X-IgnoreVacation: yes ("Email failed DMARC policy for domain") X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: linux-serial-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1518447002; b=aScXKB70wIcpv+AuzvNrbXdVA2DIpw9aONMyKWBjuNqH11A +3tUMUDMEzH19UQLQ00mYYY6bRy3TOzFj8s2ge+8dHfFETw3fNyvQPmy7ciP+AOp hOS0EwuHwPFUvkhRwOf4wbVWzyiOkDiu801lNyjJkQQ6IZs8gjF3U3Vm2Y2KN3+3 RKQN3Jih1Mj/g7SDq/9sDZiNj78xCxWMIYXYZN9qwO5KllN5T/pX0W5gDCNQQNFG aGZa1P78wfWEiFnvnRAH2PWdMbuoeIsAuJ16wbHkLue/kbD7JHLEfmKzbN4X2dXo MH1gaYb31gX5UO/adJdSxey8NFEIZiV9/7CHE4w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=subject:to:references:cc:from:message-id :date:mime-version:in-reply-to:content-type :content-transfer-encoding:sender:list-id; s=arctest; t= 1518447002; bh=ExXu27Z8OBn0fvwIfwj0FdoGHJ0hbQvPZuFHSN4Hho0=; b=k PpeFDBz00yUh7jt0aEkfRo7S12hQmV/I/ip3KC0dr5SHDw+S4dsneI4t5gWRV0l3 kJ/f35YfUzrEOZ86TbOqTOoCjYFwmPDXLq/UOr4RT+CASC/D9rgYLHBSH6bnFbAQ O2NlvXSbTsSh1KWNHerfjdHSul34p5SwtGIUL4IfY9YycPDLUOw6/BN32NdSGg2J VetSdUtIerCcoE0/C7GFhYVJqghtjSZI4qNxnidInk/cBTiyuADJC9VmG0NUqSU/ MubR0xg820mB/Qx228mn2QlzK5q4neHpKc9Kc9nzpE3lQltFrHCV5xEfNotu2j/8 59hRC3bHP0Ks6SFxUjUIQ== ARC-Authentication-Results: i=1; mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=fail (p=none,has-list-id=yes,d=none) header.from=redhat.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-serial-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=redhat.com header.result=pass header_is_org_domain=yes Authentication-Results: mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=fail (p=none,has-list-id=yes,d=none) header.from=redhat.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-serial-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=redhat.com header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754493AbeBLOtx (ORCPT ); Mon, 12 Feb 2018 09:49:53 -0500 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:45424 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751623AbeBLOtt (ORCPT ); Mon, 12 Feb 2018 09:49:49 -0500 Subject: Re: [PATCH] acpi, spcr: Make SPCR available to x86 To: Timur Tabi , Peter Zijlstra References: <20180118150951.28964-1-prarit@redhat.com> <20180212133429.GC25314@hirez.programming.kicks-ass.net> <1e69fffc-1c3b-8cc0-f1cb-695de5ccdcb5@redhat.com> <953565bd-436b-c1fe-d3c5-cde731dee83d@codeaurora.org> 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 From: Prarit Bhargava Message-ID: <7bd5897f-d6da-7e29-29c4-aa26d24f6355@redhat.com> Date: Mon, 12 Feb 2018 09:49:47 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0 MIME-Version: 1.0 In-Reply-To: <953565bd-436b-c1fe-d3c5-cde731dee83d@codeaurora.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-serial-owner@vger.kernel.org X-Mailing-List: linux-serial@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On 02/12/2018 09:43 AM, Timur Tabi wrote: > 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. That's true on ARM64. I specifically did not enable the console by default on x86. There are users who do not want a console active during boot & runtime. P. >