On Mon, Aug 21, 2023 at 11:26:32AM +0800, Hao Xiang wrote: >For intel platform, The BzyMhz field of Turbostat shows zero >due to the missing of part msr bits of MSR_PLATFORM_INFO. > >Acquire necessary msr bits, and expose following msr info to guest, >to make sure guest can get correct turbo frequency info. Userspace VMM (e.g., QEMU) can configure this MSR for guests. Please refer to tools/testing/selftests/kvm/x86_64/platform_info_test.c. The question is why KVM needs this patch given KVM already provides interfaces for QEMU to configure the MSR.
