From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755473AbcILVZm (ORCPT ); Mon, 12 Sep 2016 17:25:42 -0400 Received: from mga05.intel.com ([192.55.52.43]:33762 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754866AbcILVZk (ORCPT ); Mon, 12 Sep 2016 17:25:40 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.30,324,1470726000"; d="scan'208";a="1028940242" Date: Mon, 12 Sep 2016 15:25:38 -0600 From: Jon Derrick To: Rui Wang Cc: bhelgaas@google.com, tglx@linutronix.de, rjw@rjwysocki.net, mingo@kernel.org, bp@alien8.de, torvalds@linux-foundation.org, peterz@infradead.org, helgaas@kernel.org, linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org, tony.luck@intel.com, x86@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86/ioapic: Ignore root bridges without a companion ACPI device Message-ID: <20160912212537.GA1740@localhost.localdomain> References: <1473522046-31329-1-git-send-email-rui.y.wang@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1473522046-31329-1-git-send-email-rui.y.wang@intel.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Sep 10, 2016 at 11:40:45PM +0800, Rui Wang wrote: > Some PCI root bridges don't have a corresponding ACPI device. > This can be the case on some old platforms. Don't call acpi_ioapic_add() > on these bridges because they can't support ioapic hotplug. Not just old platforms. VMD is a new device which initializes a root port in software without an acpi handle. What branch is this based on? I can't find the relevant code/commits