Pull irq updates from Thomas Gleixner:
 "The irq departement proudly presents:

   - A rework of the core infrastructure to optimally spread interrupt
     for multiqueue devices. The first version was a bit naive and
     failed to take thread siblings and other details into account.
     Developed in cooperation with Christoph and Keith.

   - Proper delegation of softirqs to ksoftirqd, so if ksoftirqd is
     active then no further softirq processsing on interrupt return
     happens. Otherwise we try to delegate and still run another batch
     of network packets in the irq return path, which then tries to
     delegate to ksoftirqd .....

   - A proper machine parseable sysfs based alternative for
     /proc/interrupts.

   - ACPI support for the GICV3-ITS and ARM interrupt remapping

   - Two new irq chips from the ARM SoC zoo: STM32-EXTI and MVEBU-PIC

   - A new irq chip for the JCore (SuperH)

   - The usual pile of small fixlets in core and irqchip drivers"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits)
  softirq: Let ksoftirqd do its job
  genirq: Make function __irq_do_set_handler() static
  ARM/dts: Add EXTI controller node to stm32f429
  ARM/STM32: Select external interrupts controller
  drivers/irqchip: Add STM32 external interrupts support
  Documentation/dt-bindings: Document STM32 EXTI controller bindings
  irqchip/mips-gic: Use for_each_set_bit to iterate over local IRQs
  pci/msi: Retrieve affinity for a vector
  genirq/affinity: Remove old irq spread infrastructure
  genirq/msi: Switch to new irq spreading infrastructure
  genirq/affinity: Provide smarter irq spreading infrastructure
  genirq/msi: Add cpumask allocation to alloc_msi_entry
  genirq: Expose interrupt information through sysfs
  irqchip/gicv3-its: Use MADT ITS subtable to do PCI/MSI domain initialization
  irqchip/gicv3-its: Factor out PCI-MSI part that might be reused for ACPI
  irqchip/gicv3-its: Probe ITS in the ACPI way
  irqchip/gicv3-its: Refactor ITS DT init code to prepare for ACPI
  irqchip/gicv3-its: Cleanup for ITS domain initialization
  PCI/MSI: Setup MSI domain on a per-device basis using IORT ACPI table
  ACPI: Add new IORT functions to support MSI domain handling
  ...

Pull x86 apic updates from Ingo Molnar:
 "The main changes are:

   - Persistent CPU/node numbering across CPU hotplug/unplug events.
     This is a pretty involved series of changes that first fetches all
     the information during bootup and then uses it for the various
     hotplug/unplug methods. (Gu Zheng, Dou Liyang)

   - IO-APIC hot-add/remove fixes and enhancements. (Rui Wang)

   - ... various fixes, cleanups and enhancements"

* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits)
  x86/apic: Fix silent & fatal merge conflict in __generic_processor_info()
  acpi: Fix broken error check in map_processor()
  acpi: Validate processor id when mapping the processor
  acpi: Provide mechanism to validate processors in the ACPI tables
  x86/acpi: Set persistent cpuid <-> nodeid mapping when booting
  x86/acpi: Enable MADT APIs to return disabled apicids
  x86/acpi: Introduce persistent storage for cpuid <-> apicid mapping
  x86/acpi: Enable acpi to register all possible cpus at boot time
  x86/numa: Online memory-less nodes at boot time
  x86/apic: Get rid of apic_version[] array
  x86/apic: Order irq_enter/exit() calls correctly vs. ack_APIC_irq()
  x86/ioapic: Ignore root bridges without a companion ACPI device
  x86/apic: Update comment about disabling processor focus
  x86/smpboot: Check APIC ID before setting up default routing
  x86/ioapic: Fix IOAPIC failing to request resource
  x86/ioapic: Fix lost IOAPIC resource after hot-removal and hotadd
  x86/ioapic: Fix setup_res() failing to get resource
  x86/ioapic: Support hot-removal of IOAPICs present during boot
  x86/ioapic: Change prototype of acpi_ioapic_add()
  x86/apic, ACPI: Fix incorrect assignment when handling apic/x2apic entries
  ...

This patch enables the following initialization order for the
new table loading mode (which is enabled by setting
acpi_gbl_parse_table_as_term_list to TRUE):

  1. Install default region handlers (SystemMemory, SystemIo, PciConfig,
     EmbeddedControl via ECDT) without evaluating _REG;

  2. Load the table and execute the module level AML opcodes instantly.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

The whole patch-set aims at making cpuid <-> nodeid mapping persistent. So that,
when node online/offline happens, cache based on cpuid <-> nodeid mapping such as
wq_numa_possible_cpumask will not cause any problem.
It contains 4 steps:
1. Enable apic registeration flow to handle both enabled and disabled cpus.
2. Introduce a new array storing all possible cpuid <-> apicid mapping.
3. Enable _MAT and MADT relative apis to return non-present or disabled cpus' apicid.
4. Establish all possible cpuid <-> nodeid mapping.

This patch finishes step 4.

This patch set the persistent cpuid <-> nodeid mapping for all enabled/disabled
processors at boot time via an additional acpi namespace walk for processors.

[ tglx: Remove the unneeded exports ]

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: mika.j.penttila@gmail.com
Cc: len.brown@intel.com
Cc: rafael@kernel.org
Cc: rjw@rjwysocki.net
Cc: yasu.isimatu@gmail.com
Cc: linux-mm@kvack.org
Cc: linux-acpi@vger.kernel.org
Cc: isimatu.yasuaki@jp.fujitsu.com
Cc: gongzhaogang@inspur.com
Cc: tj@kernel.org
Cc: izumi.taku@jp.fujitsu.com
Cc: cl@linux.com
Cc: chen.tang@easystack.cn
Cc: akpm@linux-foundation.org
Cc: kamezawa.hiroyu@jp.fujitsu.com
Cc: lenb@kernel.org
Link: http://lkml.kernel.org/r/1472114120-3281-6-git-send-email-douly.fnst@cn.fujitsu.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

IORT shows representation of IO topology for ARM based systems.
It describes how various components are connected together on
parent-child basis e.g. PCI RC -> SMMU -> ITS. Also see IORT spec.
http://infocenter.arm.com/help/topic/com.arm.doc.den0049b/DEN0049B_IO_Remapping_Table.pdf

Initial support allows to detect IORT table presence and save its
root pointer obtained through acpi_get_table(). The pointer validity
depends on acpi_gbl_permanent_mmap because if acpi_gbl_permanent_mmap
is not set while using IORT nodes we would dereference unmapped pointers.

For the aforementioned reason call acpi_iort_init() from acpi_init()
which guarantees acpi_gbl_permanent_mmap to be set at that point.

Add generic helpers which are helpful for scanning and retrieving
information from IORT table content. List of the most important helpers:
- iort_find_dev_node() finds IORT node for a given device
- iort_node_map_rid() maps device RID and returns IORT node which provides
  final translation

IORT support is placed under drivers/acpi/arm64/ new directory due to its
ARM64 specific nature. The code there is considered only for ARM64.
The long term plan is to keep all ARM64 specific tables support
in this place e.g. GTDT table.

Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Acked-by: Rafael J. Wysocki <rjw@rjwysocki.net>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

* acpi-processor:
  ACPI: enable ACPI_PROCESSOR_IDLE on ARM64
  arm64: add support for ACPI Low Power Idle(LPI)
  drivers: firmware: psci: initialise idle states using ACPI LPI
  cpuidle: introduce CPU_PM_CPU_IDLE_ENTER macro for ARM{32, 64}
  arm64: cpuidle: drop __init section marker to arm_cpuidle_init
  ACPI / processor_idle: Add support for Low Power Idle(LPI) states
  ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE

* acpi-cppc:
  mailbox: pcc: Add PCC request and free channel declarations
  ACPI / CPPC: Prevent cpc_desc_ptr points to the invalid data
  ACPI: CPPC: Return error if _CPC is invalid on a CPU

* acpi-apei:
  ACPI / APEI: Add Boot Error Record Table (BERT) support
  ACPI / einj: Make error paths more talkative
  ACPI / einj: Convert EINJ_PFX to proper pr_fmt

* acpi-sleep:
  ACPI: Execute _PTS before system reboot

* acpi-bus:
  ACPI / bus: Support for platform initiated graceful shutdown
  ACPI / bus: Correct the comments about acpi_subsystem_init()
  ACPI / bus: Use acpi_handle_debug() in acpi_print_osc_error()

* acpi-pci:
  ACPI / PCI: make pci_slot explicitly non-modular
  ACPI / PCI: pci_slot: Use generic pr_debug utility
  ACPI / PCI: pci_slot: Use more common logging style

* acpica:
  ACPICA: Linux: Enable ACPI_MUTEX_DEBUG for Linux kernel

* acpi-doc:
  ACPI / debugger: Add AML debugger documentation
  ACPI: Add documentation describing ACPICA release automation

ACPI 6.0 introduced an optional object _LPI that provides an alternate
method to describe Low Power Idle states. It defines the local power
states for each node in a hierarchical processor topology. The OSPM can
use _LPI object to select a local power state for each level of processor
hierarchy in the system. They used to produce a composite power state
request that is presented to the platform by the OSPM.

Since multiple processors affect the idle state for any non-leaf hierarchy
node, coordination of idle state requests between the processors is
required. ACPI supports two different coordination schemes: Platform
coordinated and  OS initiated.

This patch adds initial support for Platform coordination scheme of LPI.

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Add support for ACPI reconfiguration notifiers to allow subsystems
to react to changes in the ACPI tables that happen after the initial
enumeration. This is similar with the way dynamic device tree
notifications work.

The reconfigure notifications supported for now are device add and
device remove.

Since ACPICA allows only one table notification handler, this patch
makes the table notifier function generic and moves it out of the
sysfs specific code.

Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

This patch adds support for platform initited graceful shutdown as
described in sections 5.6.6(Table-143) and 6.3.5.1 of ACPI 6.1 spec

The OSPM will get a graceful shutdown request via a Notify operator
on \_SB device with a value of 0x81 per section 5.6.6. Following the
shutdown request from platform the OSPM needs to follow the
processing sequence as described in section 6.2.5.1.

v3
* Switched to regular work with delays from delayed work
* Dropped changes to actypes.h
* Small style changes

v2
* Switched from standalone driver to a simple notify handler

v1
* Initial

Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Signed-off-by: Prashanth Prakash <pprakash@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>