QEMU 6.1 Released With RISC-V Improvements, AMD Emulation Fixes

Written by Michael Larabel in Virtualization on 24 August 2021 at 06:16 PM EDT. 22 Comments
QEMU 6.1 is out as the newest feature release to this widely-used, open-source Linux virtualization component.

QEMU 6.1 sees a lot of new and improved work for its extensive array of emulated device support. Some of the highlights for QEMU 6.1 include:

- Support on PowerPC for greatly increased maximum CPU count support that users are likely to hit other system limits before being restricted by QEMU.

- RISC-V on QEMU has updates around OpenTitan platform support, support for VirtIO VGA, and a variety of other architecture improvements.

- "Many fixes" to the emulation of AMD virtualization extensions.

- More work on POWER10 support within the Tiny Code Generator (TCG).

- Emulation support of more Arm CPU features, including SVE2 and BFloat16 among others.

- QEMU 6.1 on x86 adds new CPU model versions with XSAVES enabled, a new machine option to allow rate limiting bus locks by guests, and other changes.

- QEMU's virtio-mem now works with VFIO.

- QEMU 6.1 on the s390 now supports IBM Gen16 CPU models.

- Dropping of old CPU targets including Moxie, lm32, and unicore32.

Downloads and more details on QEMU 6.1 via 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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