On 22/10/19 02:35, Sean Christopherson wrote: > +static inline int kvm_shift_memslots_forward(struct kvm_memslots *slots, > + struct kvm_memory_slot *new) > +{ > + struct kvm_memory_slot *mslots = slots->memslots; > + int i; > + > + if (WARN_ON_ONCE(slots->id_to_index[new->id] == -1) || > + WARN_ON_ONCE(!slots->used_slots)) > + return -1; > + > + for (i = slots->id_to_index[new->id]; i < slots->used_slots - 1; i++) { > + if (new->base_gfn > mslots[i + 1].base_gfn) > + break; > + > + WARN_ON_ONCE(new->base_gfn == mslots[i + 1].base_gfn); > + > + /* Shift the next memslot forward one and update its index. */ > + mslots[i] = mslots[i + 1]; > + slots->id_to_index[mslots[i].id] = i; > + } > + return i; > +} > + > +static inline int kvm_shift_memslots_back(struct kvm_memslots *slots, > + struct kvm_memory_slot *new, > + int start) This new implementation of the insertion sort loses the comments that were there in the old one. Please keep them as function comments. Paolo