Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752617AbaAGJAJ (ORCPT ); Tue, 7 Jan 2014 04:00:09 -0500 Received: from mga09.intel.com ([134.134.136.24]:40167 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750849AbaAGJAG (ORCPT ); Tue, 7 Jan 2014 04:00:06 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.95,617,1384329600"; d="scan'208";a="454739501" From: Jiang Liu To: Joerg Roedel , David Woodhouse , Yinghai Lu , Bjorn Helgaas , Dan Williams , Vinod Koul Cc: Jiang Liu , Ashok Raj , Yijing Wang , Tony Luck , iommu@lists.linux-foundation.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org Subject: [Patch Part2 V1 00/14] Enhance DMAR drivers to handle PCI/memory hotplug events Date: Tue, 7 Jan 2014 17:00:20 +0800 Message-Id: <1389085234-22296-1-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Intel DMA/interrupt remapping drivers scan available PCI/memory devices at startup and cache discovered hardware topologies. They don't update cached information if PCI/memory hotplug event happens at runtime, then the stale information may break DMA/interrupt remapping logic. This patchset first (Patch 1-8) tries to introduces some helper functions and fixes several bugs, then (Patch 9,10) uses a global rwsem and RCU to protect global DMA/interrupt remapping data structures, and finally (Patch 11-14) hook PCI/memory hotplug events to update cached information. It's also a preparation for supporting of DMA/interrupt remapping hotplug. Jiang Liu (14): iommu/vt-d: factor out dmar_alloc_dev_scope() for later reuse iommu/vt-d: move private structures and variables into intel-iommu.c iommu/vt-d: simplify function get_domain_for_dev() iommu/vt-d: free resources if failed to create domain for PCIe endpoint iommu/vt-d: create device_domain_info structure for intermediate P2P bridges iommu/vt-d: fix incorrect iommu_count for si_domain iommu/vt-d: fix error in detect ATS capability iommu/vt-d: introduce macro for_each_dev_scope() to walk device scope entries iommu/vt-d: introduce a rwsem to protect global data structures iommu/vt-d: use RCU to protect global resources in interrupt context iommu/vt-d, PCI: update DRHD/RMRR/ATSR device scope caches when PCI hotplug happens iommu/vt-d, PCI: unify the way to process DMAR device scope array iommu/vt-d: update device to static identity domain mapping for PCI hotplug iommu/vt-d: update IOMMU state when memory hotplug happens drivers/iommu/dmar.c | 412 +++++++++++++++++-------- drivers/iommu/intel-iommu.c | 583 +++++++++++++++++++++-------------- drivers/iommu/intel_irq_remapping.c | 108 ++++--- include/linux/dmar.h | 75 +++-- 4 files changed, 753 insertions(+), 425 deletions(-) -- 1.7.10.4 -- 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/