Merge tag 'kvm-riscv-6.15-1' of https://github.com/kvm-riscv/linux into HEAD

Merge tag 'kvm-riscv-6.15-1' of https://github.com/kvm-riscv/linux into HEAD

KVM/riscv changes for 6.15

- Disable the kernel perf counter during configure
- KVM selftests improvements for PMU
- Fix warning at the time of KVM module removal