KVM Virtualization With Linux 6.9 Brings More Optimizations For Intel & AMD
KVM Virtualization With Linux 6.9 Brings More Optimizations For Intel & AMD
Great... now if AMD actually cares about virtualization, maybe they can stop limiting virtual GPUs to their enterprise GPUs. Damn monopolies really don't want to see consumers have full virtualization support for Windows on Linux.
I'm sorry, I'm quite inexperienced when it comes to virtualisation. Can you please explain what you mean? Thanks.
I think they're referring to SR-IOV support (Single Root Input/Output Virtualization). It's a technology that allows a single hardware device, like a GPU, to be shared across multiple virtual machines (VMs) with minimal overhead. In short, it lets you split your GPU into smaller GPUs that you can then distribute to VMs. This, historically, has been the domain of enterprise and industrial applications, but that's changing. With Linux gaming on the rise, and more tech enthusiasts then ever, more and more people are trying virtualization and more and more consumers feel the need for SR-IOV. Right now, only a handful of expensive, enterprise-tier AMD GPUs have SR-IOV support. I believe it's the same situation with nVidia, but you can unlock the feature on their consumer GPUs with some third-party tool (AFAIK).
They have been working on VirtIO vulkan support as well as native context support for their cards.
This is the best summary I could come up with:
The Kernel-based Virtual Machine changes for Linux 6.9 continue to enhance the capabilities of the open-source Linux virtualization software stack.
Developers found this provides a nice approximate 10% performance improvement for VM-Exit micro-benchmarks.
The KVM x86 Xen emulation code has also seen some improvements for Linux 6.9.
Another change worth noting from the KVM pull request is AMD now reports a "ept_5level" flag in /proc/cpuinfo for VMX supporting 5-level EPT paging.
Over on the KVM RISC-V side is support for the Ztso and Zacas extensions.
More details on the KVM changes for Linux 6.9 via this pull that was already merged.
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