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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 69A81C31E49 for ; Wed, 19 Jun 2019 12:24:57 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3EE47208CB for ; Wed, 19 Jun 2019 12:24:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="AMcV5wkG" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3EE47208CB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=JQQWf48naN8fvI+Lww+z3BFq3GkYsMf1yJuUNmTC05I=; b=AMcV5wkGItYQOk luB7f32hvWWIEJW2wSGw+4byAoS7ypEOX78v4IxeYVyqdYAEa4FheG8r90cLWZQKRTvIxBdlMi7ps nPeigKhOGzz/MwzYxVNxklfCZDhzGUoBStjHrhbKY4lWu/GAoy+HjXEU3M/xa21PRxLEoCF2y3Dsv 22ovXG5+1voNTvcRgKrRDbuClkAEM4dDcvpowogqUtTH128hDIbJqYE0lSIi+Mti04kGl+0516b0i tJVtZsfkFTwgKPLBz1tcw5kA5iphCAb6Vf1Dn5300HKtWrI15dR0AmE0YmvTCOwdSFV1HLTBbIHkA LQIvIgaZnhJ7Qewanc/Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hdZdv-00008l-Ep; Wed, 19 Jun 2019 12:24:47 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hdZds-00008U-VC for linux-arm-kernel@lists.infradead.org; Wed, 19 Jun 2019 12:24:46 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 2E0A6360; Wed, 19 Jun 2019 05:24:44 -0700 (PDT) Received: from e107155-lin (e107155-lin.cambridge.arm.com [10.1.196.42]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E8A6A3F738; Wed, 19 Jun 2019 05:24:42 -0700 (PDT) Date: Wed, 19 Jun 2019 13:24:34 +0100 From: Sudeep Holla To: Ard Biesheuvel Subject: Re: [RFC PATCH] acpi/arm64: ignore 5.1 FADTs that are reported as 5.0 Message-ID: <20190619122434.GA25656@e107155-lin> References: <20190619121831.7614-1-ard.biesheuvel@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190619121831.7614-1-ard.biesheuvel@linaro.org> User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190619_052445_053738_D58933A6 X-CRM114-Status: UNSURE ( 8.59 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lorenzo.pieralisi@arm.com, catalin.marinas@arm.com, will.deacon@arm.com, leif.lindholm@linaro.org, linux-acpi@vger.kernel.org, Sudeep Holla , lee.jones@linaro.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Jun 19, 2019 at 02:18:31PM +0200, Ard Biesheuvel wrote: > Some Qualcomm Snapdragon based laptops built to run Microsoft Windows > are clearly ACPI 5.1 based, given that that is the first ACPI revision > that supports ARM, and introduced the FADT 'arm_boot_flags' field, > which has a non-zero field on those systems. > > So in these cases, infer from the ARM boot flags that the FADT must be > 5.1 or later, and treat it as 5.1. > Makes sense and looks simple to me. Acked-by: Sudeep Holla -- Regards, Sudeep _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel