On Wed, Sep 18, 2024 at 05:08:33PM -0700, David Dai wrote: > Introduce a virtualized cpufreq driver for guest kernels to improve > performance and power of workloads within VMs. > > This driver does two main things: > > 1. Sends the frequency of vCPUs as a hint to the host. The host uses the > hint to schedule the vCPU threads and decide physical CPU frequency. > > 2. If a VM does not support a virtualized FIE(like AMUs), it queries the > host CPU frequency by reading a MMIO region of a virtual cpufreq device > to update the guest's frequency scaling factor periodically. This enables > accurate Per-Entity Load Tracking for tasks running in the guest. > Acked-by: Sudeep Holla <sudeep.holla@xxxxxxx> -- Regards, Sudeep
