1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef __KVM_X86_PAGE_TRACK_H |
3 | #define __KVM_X86_PAGE_TRACK_H |
4 | |
5 | #include <linux/kvm_host.h> |
6 | |
7 | #include <asm/kvm_page_track.h> |
8 | |
9 | |
10 | bool kvm_page_track_write_tracking_enabled(struct kvm *kvm); |
11 | int kvm_page_track_write_tracking_alloc(struct kvm_memory_slot *slot); |
12 | |
13 | void kvm_page_track_free_memslot(struct kvm_memory_slot *slot); |
14 | int kvm_page_track_create_memslot(struct kvm *kvm, |
15 | struct kvm_memory_slot *slot, |
16 | unsigned long npages); |
17 | |
18 | void __kvm_write_track_add_gfn(struct kvm *kvm, struct kvm_memory_slot *slot, |
19 | gfn_t gfn); |
20 | void __kvm_write_track_remove_gfn(struct kvm *kvm, |
21 | struct kvm_memory_slot *slot, gfn_t gfn); |
22 | |
23 | bool kvm_gfn_is_write_tracked(struct kvm *kvm, |
24 | const struct kvm_memory_slot *slot, gfn_t gfn); |
25 | |
26 | #ifdef CONFIG_KVM_EXTERNAL_WRITE_TRACKING |
27 | int kvm_page_track_init(struct kvm *kvm); |
28 | void kvm_page_track_cleanup(struct kvm *kvm); |
29 | |
30 | void __kvm_page_track_write(struct kvm *kvm, gpa_t gpa, const u8 *new, int bytes); |
31 | void kvm_page_track_delete_slot(struct kvm *kvm, struct kvm_memory_slot *slot); |
32 | |
33 | static inline bool kvm_page_track_has_external_user(struct kvm *kvm) |
34 | { |
35 | return !hlist_empty(h: &kvm->arch.track_notifier_head.track_notifier_list); |
36 | } |
37 | #else |
38 | static inline int kvm_page_track_init(struct kvm *kvm) { return 0; } |
39 | static inline void kvm_page_track_cleanup(struct kvm *kvm) { } |
40 | |
41 | static inline void __kvm_page_track_write(struct kvm *kvm, gpa_t gpa, |
42 | const u8 *new, int bytes) { } |
43 | static inline void kvm_page_track_delete_slot(struct kvm *kvm, |
44 | struct kvm_memory_slot *slot) { } |
45 | |
46 | static inline bool kvm_page_track_has_external_user(struct kvm *kvm) { return false; } |
47 | |
48 | #endif /* CONFIG_KVM_EXTERNAL_WRITE_TRACKING */ |
49 | |
50 | static inline void kvm_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa, |
51 | const u8 *new, int bytes) |
52 | { |
53 | __kvm_page_track_write(kvm: vcpu->kvm, gpa, new, bytes); |
54 | |
55 | kvm_mmu_track_write(vcpu, gpa, new, bytes); |
56 | } |
57 | |
58 | #endif /* __KVM_X86_PAGE_TRACK_H */ |
59 | |