KVM Gets Two New Features In Linux 3.12
Written by Michael Larabel in Virtualization on 5 September 2013 at 01:44 AM EDT. Add A Comment
The KVM pull request was accepted on Wednesday for the Linux 3.12 kernel. This KVM pull has two major new features.

New to KVM virtualization on Linux with the 3.12 kernel is support for nested EPT and PV-TicketLocks. The first is support for nested Extended Page Tables while the PV-TicketLocks code is ported to KVM from the Xen code.

The new Paravirtualized Ticket Spinlocks replaces earlier ticket lock code for virtualization and is meant to better deal with vCPUs. The work on PV-TicketLocks has mostly come from IBM for both Xen and KVM. More information on PV-TicketLocks including benchmarks can be found from the Xen.org blog.

Aside from this modest feature work, there's also KVM bug-fixes for all major supported architectures. More details on the KVM virtualization code churn for the 3.12 merge window can be found via this Git commit.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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