Messages in this thread | | | From | Yinghai Lu <> | Subject | [PATCH 00/13] x86, irq: support ioapic device hotplug for x86 | Date | Thu, 23 Feb 2012 19:48:46 -0800 |
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Hi, Thomas
Current x86 code does not support iapic hotplug yet.
This patcheset will try to pre-reserve irq block in allocated_irqs bitmap. for hot add ioapic controller. also record irq_base in gsi_config, so later could use it to convert gsi to irq for pci device using that ioapic controller.
need to update x86/irq to support realloc_irq after those bit are pre-reserved.
It is tested with pci remove/rescan method plus some test stubs.
Please review them.
could get them from:
git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git for-x86-irq
Thanks
Yinghai
94738bb: PCI: Disable mem in the ioapic removing path 6a53ea9: PCI: Make sure hotplug ioapic driver get loaded early 77f4e2b: x86, acpi, irq: Enable pci device type ioapic hotplug b495bde: x86, irq: Make ioapics loop code skip blank slot 56cb7ba: x86, irq: Add mp_unregister_ioapic could handle hotremove ioapic bd48b79: x86, irq: Make mp_register_ioapic could handle hotadd ioapic 3b23367: x86, irq: more strict check for register ioapic 996f15b: genirq: bail out early in free_desc() f83ad47: x86, irq: add ioapic_gsi_to_irq e864fc4: x86, irq: pre-reserve irq range that are used by ioapic 16b8b29: x86, irq: Add realloc_irq_and_cfg_at() 660c577: genirq: Split __irq_reserve_irqs from irq_alloc_descs 1060703: x86, irq: Convert irq_2_pin list to generic list
arch/x86/include/asm/hw_irq.h | 2 +- arch/x86/include/asm/io_apic.h | 2 + arch/x86/include/asm/mpspec.h | 2 + arch/x86/kernel/acpi/boot.c | 28 +--- arch/x86/kernel/apic/io_apic.c | 348 +++++++++++++++++++++++++++++++--------- drivers/pci/Kconfig | 2 +- drivers/pci/Makefile | 5 +- drivers/pci/ioapic.c | 19 ++- include/linux/irq.h | 6 + kernel/irq/irqdesc.c | 84 +++++++---- 10 files changed, 366 insertions(+), 132 deletions(-)
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