Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754199AbdLNWrj (ORCPT ); Thu, 14 Dec 2017 17:47:39 -0500 Received: from mail-it0-f41.google.com ([209.85.214.41]:39300 "EHLO mail-it0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754069AbdLNWrf (ORCPT ); Thu, 14 Dec 2017 17:47:35 -0500 X-Google-Smtp-Source: ACJfBotZDteQYKkEABDL9jD7jt+PuzKO6Tzdqd6XV/OwZvzlAa9fOhvgA0hzIZRF+TqsC1ObMboZvJOzVmVz336tvaU= MIME-Version: 1.0 In-Reply-To: References: <168050887.sZlTFXWCmO@aspire.rjw.lan> <20171206121452.GA6320@dhcp22.suse.cz> <0f1d3d63-fa10-5cef-8014-81753dc60243@mblankhorst.nl> <57c8679e-1b88-c9ad-2299-2bea7560b28f@mblankhorst.nl> <20171213162336.GG53955@bhelgaas-glaptop.roam.corp.google.com> From: Linus Torvalds Date: Thu, 14 Dec 2017 14:47:33 -0800 X-Google-Sender-Auth: QwwvsbIN8Pzm1NpkXI9XeC5NdS8 Message-ID: Subject: Re: Linux 4.15-rc2: Regression in resume from ACPI S3 To: Thomas Gleixner Cc: Bjorn Helgaas , Maarten Lankhorst , Michal Hocko , "Rafael J. Wysocki" , Andy Lutomirski , Linux Kernel Mailing List , "the arch/x86 maintainers" , Daniel Vetter , Bjorn Helgaas , "Rafael J. Wysocki" , linux-pci@vger.kernel.org, linux-pm@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 428 Lines: 10 On Thu, Dec 14, 2017 at 2:36 PM, Thomas Gleixner wrote: > > But, because the silly firmware comes out of suspend with all PIC lines > unmasked for whatever reason, the PIC can observe that IRQ being raised and > the CPU not handling it. So yes, I forgot about 7 being magic, but I still > think it's the firmware which causes it by unmasking the PIC irqs. Yes, that sounds quite likely. Linus