KVM Updates For Linux 4.17 Bring VirtIO GPU Prep For S390, AMD Improvements
Written by Michael Larabel in Virtualization on 9 April 2018 at 01:15 PM EDT. 3 Comments
VIRTUALIZATION --
The latest feature pull request for the Linux 4.17 kernel are the Kernel-based Virtual Machine (KVM) virtualization updates.

On the KVM x86 front for Linux 4.17 are some AMD improvements including pause loop exiting and AMD Core Perf Extensions support. Also in the x86 space is support for VMware magic I/O port and pseudo PMCs, synchronous register access, exposing nVMX capabilities to user-space, support for Hyper-V signaling via EventFD, and other optimizations and nested virtualization improvements.

On the ARM front are VHE optimizations, EL2 address space randomization support, ARM speculative execution mitigations for Variant 3A, and other improvements.

Worth pointing out on the s390 side of the KVM changes is plumbing for VirtIO GPU support as well as support for more KVM statistics counters.

The KVM changes for Linux 4.17 are outlined via this PR.
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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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