[Patch v7 00/18] Enable support of IOAPIC hotplug on x86 platforms

Jiang Liu
2014-10-27T05:18:55Z

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_v7

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

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):
ACPI, irq: fix regression casued by 6b9fb7082409
x86, intel-mid: Create IRQs for APB timers and RTC timers
ACPI, irq, x86: 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