Intel Working To Improve Virtualization Handling For P/E-Core Hybrid CPUs

[phoronix]

Phoronix: Intel Working To Improve Virtualization Handling For P/E-Core Hybrid CPUs

While Intel has been making steady progress around enhancing the Linux kernel handling for CPUs with a mix of P and E cores for proper task placement and power optimizations, one area that still is less than desirable for these hybrid Intel Core processors is around virtualization. But Intel engineers are now actively working on improving the Linux virtualization infrastructure for being able to convey the P/E core differences among vCPUs so that the guest VMs can better behave in such environments...

https://www.phoronix.com/news/Intel-Core-Hybrid-Better-Virt

[risho]

hopefully this is general enough that it is picked up by vmware workstation for free and not just for kvm. in my experience vmware workstation is basically useless in a P/E core configuration.

[pWe00Iri3e7Z9lHOX2Qx]

hopefully this is general enough that it is picked up by vmware workstation for free and not just for kvm. in my experience vmware workstation is basically useless in a P/E core configuration.

I assume no based on this wording, "working on a QEMU API". But I do assume (possibly incorrectly) that it would be straight forward to genericize for AMD hybrid topologies with "c" cores.

[Knopornef]

Here's a recording of the presentation at the KVM Forum: https://www.youtube.com/live/qzk5qrG...nDqEA-O&t=3075.

[Sonadow]

No need to make it so complicated.

Hypervisor and guest automatically grab P-cores. background services on the host take the E-cores.