/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __KVM_X86_PAGE_TRACK_H #define __KVM_X86_PAGE_TRACK_H #include <linux/kvm_host.h> #include <asm/kvm_page_track.h> bool kvm_page_track_write_tracking_enabled(struct kvm *kvm); int kvm_page_track_write_tracking_alloc(struct kvm_memory_slot *slot); void kvm_page_track_free_memslot(struct kvm_memory_slot *slot); int kvm_page_track_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, unsigned long npages); void __kvm_write_track_add_gfn(struct kvm *kvm, struct kvm_memory_slot *slot, gfn_t gfn); void __kvm_write_track_remove_gfn(struct kvm *kvm, struct kvm_memory_slot *slot, gfn_t gfn); bool kvm_gfn_is_write_tracked(struct kvm *kvm, const struct kvm_memory_slot *slot, gfn_t gfn); #ifdef CONFIG_KVM_EXTERNAL_WRITE_TRACKING int kvm_page_track_init(struct kvm *kvm); void kvm_page_track_cleanup(struct kvm *kvm); void __kvm_page_track_write(struct kvm *kvm, gpa_t gpa, const u8 *new, int bytes); void kvm_page_track_delete_slot(struct kvm *kvm, struct kvm_memory_slot *slot); static inline bool kvm_page_track_has_external_user(struct kvm *kvm) { return !hlist_empty(&kvm->arch.track_notifier_head.track_notifier_list); } #else static inline int kvm_page_track_init(struct kvm *kvm) { return 0; } static inline void kvm_page_track_cleanup(struct kvm *kvm) { } static inline void __kvm_page_track_write(struct kvm *kvm, gpa_t gpa, const u8 *new, int bytes) { } static inline void kvm_page_track_delete_slot(struct kvm *kvm, struct kvm_memory_slot *slot) { } static inline bool kvm_page_track_has_external_user(struct kvm *kvm) { return false; } #endif /* CONFIG_KVM_EXTERNAL_WRITE_TRACKING */ static inline void kvm_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa, const u8 *new, int bytes) { __kvm_page_track_write(vcpu->kvm, gpa, new, bytes); kvm_mmu_track_write(vcpu, gpa, new, bytes); } #endif /* __KVM_X86_PAGE_TRACK_H */