[RFC Patch V2 14/16] x86, irq: introduce helper to check whether an IOAPIC has been registered

Introduce acpi_ioapic_registered() to check whether an IOAPIC has already been registered, it will be used when enabling IOAPIC hotplug. Signed-off-by: Jiang Liu --- arch/x86/include/asm/io_apic.h |1 + arch/x86/kernel/acpi/boot.c| 11 +++ arch/x86/kernel/apic/io_apic.c | 11

[RFC Patch V2 14/16] x86, irq: introduce helper to check whether an IOAPIC has been registered

Introduce acpi_ioapic_registered() to check whether an IOAPIC has already been registered, it will be used when enabling IOAPIC hotplug. Signed-off-by: Jiang Liu jiang@linux.intel.com --- arch/x86/include/asm/io_apic.h |1 + arch/x86/kernel/acpi/boot.c| 11 +++