QEMU 4.2 Cycle Kicks Off With Inaugural Release Candidate

Written by Michael Larabel in Virtualization on 8 November 2019 at 04:24 AM EST. 10 Comments
The initial release candidate for the upcoming QEMU 4.2 is now available as a sizable update to this important piece of the open-source Linux virtualization stack.

Among the changes on deck for QEMU 4.2 include:

- Better performance for Tiny Code Generator (TCG) emulation of ARM cores.

- Another QEMU 2.4 performance improvement can come with recent Gcrypt and Nettle libraries where QEMU can now use the library's own XTS cipher mode and that can result in a big performance boost for AES-XTS encryption particularly if using LUKS disk encryption when running under QEMU.

- The LUKS block driver now supports falloc/full pre-allocation.

- Support for QEMU on ARM to run with more than 256 CPUs.

- ASpeed AST2600 model support.

There is much more via the work-in-progress change-log. At least three more release candidates are expected over the coming weeks while ideally releasing QEMU 4.2.0 around 3~10 December. The current stable and development releases are available from QEMU.org.
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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 20,000 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, LinkedIn, or contacted via MichaelLarabel.com.

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