F: arch/x86/kvm/
F: arch/x86/include/uapi/asm/kvm*
F: arch/x86/include/asm/kvm*
+F: arch/x86/include/asm/pvclock-abi.h
F: arch/x86/kernel/kvm.c
F: arch/x86/kernel/kvmclock.c
F: drivers/*/xen-*front.c
F: drivers/xen/
F: arch/x86/include/asm/xen/
+F: arch/x86/include/asm/pvclock-abi.h
F: include/xen/
F: include/uapi/xen/
F: Documentation/ABI/stable/sysfs-hypervisor-xen