KVM Gets Better Windows Guest Support With Linux 3.15
Written by Michael Larabel in Virtualization on 2 April 2014 at 11:28 AM EDT. 3 Comments
The Kernel-based Virtual Machine has seen some semi-exciting enhancements with the in-development Linux 3.15 kernel.

Key changes to Linux 3.15 with regard to KVM are:

- The PowerPC KVM code now supports transactional memory within guests.

- MIPS KVM improvements, but that is expected to be more exciting for the Linux 3.16 kernel as QEMU is soon gaining MIPS KVM support.

- KVM on x86 has optimizations for debug registers since they are triggered when running some Windows games. There's also other Windows guests enhancements.

- KVM x86 also has a fix/workaround for Apple Mac OS X guests.

- Intel Broadwell CPU instruction set extensions are now exposed as well as Intel MPX.

- Asynchronous page faults for KVM s390 along with IRQ improvements that speed-up s390 VirtIO devices.

More details can be found via the Linux 3.15 pull request by Paolo Bonzini.
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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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