Linux APIC Code Prepares For A Major Overhaul
The x86 APIC subsystem within the Linux kernel is beginning the process of a major overhaul with the Linux 3.17 kernel.
The Advanced Programmable Interrupt Controller (APIC) support is being overhauled to support physical IOAPIC hot-plugging. Within the Linux 3.17 kernel this feature isn't present but the prepatory work is moving forward after a first attempt at the hot-plug support was rejected on technical grounds. In prepping for the APIC hot-plug support, obsolete driver abstractions were removed and other changes made for this merge window.
Those concerned about the Linux APIC code can find out more about the forthcoming changes via this lengthy mailing list message.
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