Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758288Ab3FAGDi (ORCPT ); Sat, 1 Jun 2013 02:03:38 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:25635 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750748Ab3FAGDb (ORCPT ); Sat, 1 Jun 2013 02:03:31 -0400 From: Yinghai Lu To: Bjorn Helgaas , Benjamin Herrenschmidt , Gavin Shan Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Yinghai Lu Subject: [PATCH v5 0/7] PCI: Change assign unassigned resources per root bus bassis Date: Fri, 31 May 2013 23:03:06 -0700 Message-Id: <1370066593-22736-1-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1367837311.15842.31.camel@pasglop> X-Source-IP: ucsinet22.oracle.com [156.151.31.94] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1624 Lines: 43 BenH reported that there is some assign unassigned resource problem in powerpc. It turns out after | commit 0c5be0cb0edfe3b5c4b62eac68aa2aa15ec681af | Date: Thu Feb 23 19:23:29 2012 -0800 | | PCI: Retry on IORESOURCE_IO type allocations even the root bus does not have io port range, it will keep retrying to realloc with mmio. After checking the code, found that we bound io port and mmio fail path together. First patch fix the problem, that will not make mmio fall back to must-only when only have io port fail with must+optional. During we found the fix for that problem, found that we can separate assign unassigned resources to per root bus. that will make the code simple, also could reuse it for hotadd path. These patches are targeted to 3.11 -v4: split first patch into 4 patches per Bjorn. -v5: drop two patches that will pass root bus resource mask after we found simple and less intrusive way to fix the problem. PCI: Don't let mmio fallback to must-only, if ioport fails with must+optional PCI: Don't use temp bus for pci_bus_release_bridge_resources PCI: Use pci_walk_bus to detect unassigned resources PCI: Introduce enable_local to prepare per root bus handling PCI: Split pci_assign_unassigned_resources to per root bus PCI: Enable pci bridge when it is needed PCI: Retry assign unassigned resources for hotadd root bus Thanks Yinghai -- 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/