Many Linux x86_64 KVM Changes Ready To Go For Linux 4.21
Written by Michael Larabel in Virtualization on 24 December 2018 at 12:03 AM EST. 1 Comment
VIRTUALIZATION --
Paolo Bonzini submitted the Kernel-based Virtual Machine (KVM) changes on Sunday for the now-open Linux 4.21 kernel merge window. The x86/x86_64 KVM changes represent most of the work this cycle but there are also POWER and ARM changes too.

On the Intel/AMD KVM virtualization front for Linux 4.21 is support for Processor Tracing virtualization, STIBP support for cross-HT Spectre V2 mitigation within KVM via Single Thread Indirect Branch Predictors, WBNOINVD support as an Icelake server CPU feature for writing back all modified cache lines from the processor's internal cache back to the main system memory while not invalidating/flushing the internal caches, various Microsoft Hyper-V improvements, and other changes.

On the ARM front there is improved tracing, large PUD support for HugeTLC, and more. POWER meanwhile picks up support for nested VFIO.

More details via this pull request.
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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 or contacted via MichaelLarabel.com.

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