Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753367Ab3F0Nyf (ORCPT ); Thu, 27 Jun 2013 09:54:35 -0400 Received: from mga11.intel.com ([192.55.52.93]:17984 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751685Ab3F0Nyd (ORCPT ); Thu, 27 Jun 2013 09:54:33 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,952,1363158000"; d="scan'208";a="356649656" Date: Thu, 27 Jun 2013 16:58:19 +0300 From: Mika Westerberg To: Yinghai Lu Cc: Bjorn Helgaas , Greg Kroah-Hartman , "Rafael J. Wysocki" , Jesse Barnes , "Ronciak, John" , "Penner, Miles J" , Bruce Allan , "Kirill A. Shutemov" , Heikki Krogerus , "linux-kernel@vger.kernel.org" , "linux-pci@vger.kernel.org" , "x86@kernel.org" Subject: Re: [PATCH 6/6] x86/PCI: quirk Thunderbolt PCI-to-PCI bridges Message-ID: <20130627135819.GX9294@intel.com> References: <1372177330-28013-1-git-send-email-mika.westerberg@linux.intel.com> <1372177330-28013-7-git-send-email-mika.westerberg@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1217 Lines: 24 On Wed, Jun 26, 2013 at 03:26:59PM -0700, Yinghai Lu wrote: > On Wed, Jun 26, 2013 at 3:18 PM, Bjorn Helgaas wrote: > > On Tue, Jun 25, 2013 at 10:22 AM, Mika Westerberg > > wrote: > >> Thunderbolt PCI-to-PCI bridges typically use BIOS "assisted" enumeration. > >> This means that the BIOS will allocate bridge resources based on some > >> assumptions of a maximum Thunderbolt chain. It also disables native PCIe > >> hotplug of the root port where the Thunderbolt host router is connected. > > We should not need tricks in this patch after > > https://patchwork.kernel.org/patch/2766521/ > > [2/3] PCI / ACPI: Use boot-time resource allocation rules during hotplug Unfortunately that patch is not enough :-( We still need to make sure that we don't add anything to the bridge window sizes like __pci_bus_size_bridges() is currently doing (e.g similar to pci=hpmemsize=0,hpiosize=0 for the Thunderbolt bridges). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/