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    Subject[Patch v8 00/18] Enable support of IOAPIC hotplug on x86 platforms
    Date
    This patch set enhances IOAPIC core and ACPI drivers to support IOAPIC
    hotplug on x86 platforms. It's based on v3.18-rc2 at
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

    You may pull it from
    https://github.com/jiangliu/linux.git ioapic/hotplug_v8

    We have pick up several patches from Yinghai's original IOAPIC hotplug
    patch set and reimplemented IOAPIC driver as an ACPI driver instead of
    a PCI driver.

    It has been tested on a 4-socket Intel SDV with socket hot-addition
    capability. Any suggestions are welcomed!

    Patch 1-3 are bugfixes against v3.17 and should target v3.18. Patch 1
    has been merged into tip/x86/urgent.
    Patch 4-7 are bugfixes and enhancements to ACPI subsystem
    Patch 8 killes PCI IOAPIC driver
    Patch 9-17 enhances IOAPIC core to support IOAPIC hotplug
    Patch 18 reimplements ACPI IOAPIC driver and enables IOAPIC hotplug

    V7-V8:
    1) Use mutex instead of rwsem to protect IOAPIC from hotplug
    V6->V7:
    1) Rebase to v3.18-rc2
    2) Three bugfixes for v3.18
    V5->V6:
    1) Rebase to the latest v3.17-16
    2) Minor fixes for comments
    V4->V5:
    1) Fix a building error
    2) Don't rename processor_core.c as apic_id.c
    3) Improve comments
    4) Reorder patches to get rid of some temporary code
    V3->V4:
    1) Fix a bug in manage IOAPIC reference count
    2) Rebase to v3.17-rc2
    3) Refine commit messages
    V2->V3:
    1) Refine ACPI resource walk functions for PCI root bus and IOAPIC
    2) Improve commit messages
    3) Reorder patch order for better maintenence

    Jiang Liu (15):
    x86: ACPI: Do not translate GSI number if IOAPIC is disabled
    x86, intel-mid: Create IRQs for APB timers and RTC timers
    x86, irq, ACPI: Return IRQ instead of GSI in mp_register_gsi()
    x86, PCI, ACPI: Kill private function resource_to_addr() in
    arch/x86/pci/acpi.c
    ACPI: Correct return value of acpi_dev_resource_address_space()
    ACPI: Fix minor syntax issues in processor_core.c
    PCI: Remove PCI ioapic driver
    x86, irq: Remove __init marker for functions will be used by IOAPIC
    hotplug
    x86, irq: Keep balance of IOAPIC pin reference count
    x86, irq: Refine mp_register_ioapic() to prepare for IOAPIC hotplug
    x86, irq, ACPI: Introduce a rwsem to protect IOAPIC operations from
    hotplug
    x86, irq, ACPI: Implement interface to support ACPI based IOAPIC
    hot-addition
    x86, irq, ACPI: Implement interfaces to support ACPI based IOAPIC
    hot-removal
    x86, irq: Introduce helper to check whether an IOAPIC has been
    registered
    x86, irq, ACPI: Implement ACPI driver to support IOAPIC hotplug

    Yinghai Lu (3):
    ACPI: Add interfaces to parse IOAPIC ID for IOAPIC hotplug
    x86, irq: Split out alloc_ioapic_save_registers()
    x86, irq: Prefer assigned ID in APIC ID register for x86_64

    arch/x86/include/asm/io_apic.h | 6 +-
    arch/x86/kernel/acpi/boot.c | 102 ++++++++++++++--
    arch/x86/kernel/apb_timer.c | 2 -
    arch/x86/kernel/apic/io_apic.c | 234 +++++++++++++++++++++++++++++-------
    arch/x86/pci/acpi.c | 144 +++++++++--------------
    arch/x86/pci/intel_mid_pci.c | 10 +-
    arch/x86/pci/irq.c | 7 +-
    arch/x86/platform/intel-mid/sfi.c | 2 +
    drivers/acpi/Kconfig | 6 +
    drivers/acpi/Makefile | 1 +
    drivers/acpi/internal.h | 7 ++
    drivers/acpi/ioapic.c | 235 +++++++++++++++++++++++++++++++++++++
    drivers/acpi/pci_irq.c | 11 +-
    drivers/acpi/pci_root.c | 3 +
    drivers/acpi/processor_core.c | 131 ++++++++++++++++++---
    drivers/acpi/resource.c | 2 +-
    drivers/pci/Kconfig | 7 --
    drivers/pci/Makefile | 2 -
    drivers/pci/ioapic.c | 121 -------------------
    include/linux/acpi.h | 5 +
    include/linux/pci.h | 1 +
    21 files changed, 739 insertions(+), 300 deletions(-)
    create mode 100644 drivers/acpi/ioapic.c
    delete mode 100644 drivers/pci/ioapic.c

    --
    1.7.10.4



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