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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 2DE44C43613 for ; Mon, 24 Jun 2019 14:55:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0B069205C9 for ; Mon, 24 Jun 2019 14:55:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728690AbfFXOzx (ORCPT ); Mon, 24 Jun 2019 10:55:53 -0400 Received: from foss.arm.com ([217.140.110.172]:52806 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727406AbfFXOzx (ORCPT ); Mon, 24 Jun 2019 10:55:53 -0400 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 B7A0E344; Mon, 24 Jun 2019 07:55:52 -0700 (PDT) Received: from arrakis.emea.arm.com (arrakis.cambridge.arm.com [10.1.196.78]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id B368D3F71E; Mon, 24 Jun 2019 07:55:51 -0700 (PDT) Date: Mon, 24 Jun 2019 15:55:49 +0100 From: Catalin Marinas To: Ard Biesheuvel Cc: linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, will.deacon@arm.com, lorenzo.pieralisi@arm.com, lee.jones@linaro.org, leif.lindholm@linaro.org Subject: Re: [RFC PATCH] acpi/arm64: ignore 5.1 FADTs that are reported as 5.0 Message-ID: <20190624145549.GF29120@arrakis.emea.arm.com> References: <20190619121831.7614-1-ard.biesheuvel@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190619121831.7614-1-ard.biesheuvel@linaro.org> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.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. > > Signed-off-by: Ard Biesheuvel Queued for 5.3. Thanks. -- Catalin