Nit: there is a typo in the commit header: "iff" -> "if" > -void kvm_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa, const u8 *new, > - int bytes) > +void __kvm_page_track_write(struct kvm *kvm, gpa_t gpa, const u8 *new, int bytes) Line length is 81 characters. A little longer than 80 :) > +static inline bool kvm_page_track_has_external_user(struct kvm *kvm) { return false; } This line is also too long.