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Linux APIC Code Prepares For A Major Overhaul

Linux Kernel

Published on 13 August 2014 08:51 AM EDT
Written by Michael Larabel in Linux Kernel
5 Comments

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.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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