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    Subject[PATCH 00/47] PCI, x86: pci root bus hotplug support
    will add pci_stop_and_remove_bus() to support remove bus in

    To rescan root, need to
    echo 1 > /sys/bus/pci/rescan_root

    It supports acpi path root bus and legacy root bus.

    This patcheset include some IOMM and dmar and pnpacpi fix with device refcount leaking.
    also include some bus remove/rescan cleanup.

    The patches need to apply to pci/for-linus and pci/linux-next
    [PATCH -v3] PCI: pci_host_bridge related cleanup
    [PATCH -v11] PCI: allocate pci bus num range for unassigned bridge busn

    could get from
    git:// for-pci-root-bus-hotplug

    -v2: Address most of Bjorn's review, except still keeping .../pci_bus/.../remove
    Separate pci root hot add support from acpiphp to pci_root_hp
    add hot removal to pci_root_hp
    -v3: Reordering the patches about /sys changes at last that Bjorn objects.
    Claim hw/fw allocated bus after root bus hot add.
    add two patches for Jiang Liu about removal.

    Ashok Raj (1):
    ACPI: Enable SCI_EMULATE to manually simulate physical hotplug

    Jiang Liu (2):
    Correctly clean up pci root buses in function pci_remove_bus()
    Fix an access-after-free issue in function pci_stop_and_remove_bus()

    Yinghai Lu (44):
    IOMMU: Update dmar units devices list during hotplug
    PNPACPI: Fix device ref leaking in acpi_pnp_match
    IOMMU: Fix tboot force iommu logic
    x86, PCI: Fix non acpi path pci_sysdata leaking with release_fn
    PCI: Separate out pci_assign_unassigned_bus_resources()
    PCI: Move back pci_rescan_bus()
    PCI: pci_bus_size_bridges() should not size own bridge
    PCI: Use __pci_bus_size_bridges() directly in pci_assign_unassigned_bus_resources()
    PCI, sysfs: Use device_type and attr_groups with pci dev
    PCI, sysfs: create rescan_bridge under /sys/.../pci/devices/... for pci bridges
    PCI: Add pci_bus_add_single_device()
    PCI: Make pci_rescan_bus_bridge_resize() use pci_scan_bridge instead
    PCI: Clean up rescan_bus_bridge_resize()
    PCI: Rescan bus or bridge using callback method too
    PCI, sysfs: Clean up rescan/remove with scheule_callback
    x86, PCI: Separate pcibios_allocate_bridge_resources()
    x86, PCI: Separate pcibios_allocate_dev_resources()
    x86, PCI: Let pcibios_allocate_bus_resources() take bus instead
    PCI: Claim hw/fw allocated resources in hot add path.
    PCI: Move pci_stop_and_remove_behind_bridge() down
    PCI: Add __pci_remove_bus_devices()
    PCI: Use list_for_each_entry_safe instead of list_for_each_safe
    PCI: Add pci_stop_and_remove_bus()
    PCI, ACPI: Make acpi_pci_root_remove remove pci root bus too
    PCI, acpiphp: Separate out hot-add support of pci host bridge
    PCI, ACPI: Add pci_root_hp hot removal notification support.
    PCI, ACPI: Add alloc_acpi_hp_work()
    PCI, acpiphp: Use acpi_hp_work
    PCI, pci_root_hp: Use acpi_hp_work
    PCI, ACPI: Make kacpi_hotplug_wq static
    PCI: Add debug print out for pci related dev release
    PCI, pciehp: Separate pci_hp_add_bridge()
    PCI, cphi_hotplug: Simplify configure_slot
    PCI, shpchp: Simplify configure_device
    PCI: Kill pci_is_reassignedev()
    PCI, sysfs: Prepare to kill pci device rescan
    PCI: Add pci bus removal through /sys/.../pci_bus/.../remove
    PCI, ACPI: Add acpi_pci_root_rescan()
    PCI: Add __pci_scan_root_bus() that can skip bus_add
    x86, PCI: add __pci_scan_root_bus_on_node() that can skip bus_add
    x86, PCI: add __pcibios_scan_specific_bus that can skip bus_add
    x86, PCI: Add pcibios_root_rescan()
    x86, PCI: Add arch version pci_root_rescan()
    PCI: Add /sys/bus/pci/rescan_root

    Documentation/ABI/testing/sysfs-bus-pci | 27 +++
    Documentation/feature-removal-schedule.txt | 9 +
    arch/x86/include/asm/pci.h | 4 +
    arch/x86/pci/common.c | 35 +++-
    arch/x86/pci/i386.c | 122 ++++++++-----
    arch/x86/pci/legacy.c | 45 ++++-
    drivers/acpi/Kconfig | 10 +
    drivers/acpi/Makefile | 2 +
    drivers/acpi/bus.c | 2 +
    drivers/acpi/internal.h | 6 +
    drivers/acpi/osl.c | 24 ++-
    drivers/acpi/pci_root.c | 14 ++
    drivers/acpi/pci_root_hp.c | 288 ++++++++++++++++++++++++++++
    drivers/acpi/sci_emu.c | 141 ++++++++++++++
    drivers/iommu/intel-iommu.c | 194 +++++++++++++++++--
    drivers/pci/bus.c | 41 ++++
    drivers/pci/hotplug-pci.c | 13 ++
    drivers/pci/hotplug/acpiphp.h | 9 +-
    drivers/pci/hotplug/acpiphp_glue.c | 149 +++------------
    drivers/pci/hotplug/cpci_hotplug_pci.c | 35 +---
    drivers/pci/hotplug/pciehp_pci.c | 18 +--
    drivers/pci/hotplug/shpchp_pci.c | 45 ++---
    drivers/pci/pci-sysfs.c | 153 +++++++++++++--
    drivers/pci/pci.c | 17 +--
    drivers/pci/pci.h | 2 +
    drivers/pci/probe.c | 46 ++++-
    drivers/pci/remove.c | 96 ++++++----
    drivers/pci/setup-bus.c | 50 ++----
    drivers/pnp/pnpacpi/core.c | 7 +-
    include/acpi/acpiosxf.h | 9 +-
    include/linux/dmar.h | 4 +
    include/linux/pci-acpi.h | 7 +
    include/linux/pci.h | 8 +
    33 files changed, 1245 insertions(+), 387 deletions(-)
    create mode 100644 drivers/acpi/pci_root_hp.c
    create mode 100644 drivers/acpi/sci_emu.c


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