1 | // SPDX-License-Identifier: GPL-2.0 |
2 | |
3 | #ifndef __KVM_X86_MMU_TDP_MMU_H |
4 | #define __KVM_X86_MMU_TDP_MMU_H |
5 | |
6 | #include <linux/kvm_host.h> |
7 | |
8 | #include "spte.h" |
9 | |
10 | void kvm_mmu_init_tdp_mmu(struct kvm *kvm); |
11 | void kvm_mmu_uninit_tdp_mmu(struct kvm *kvm); |
12 | |
13 | int kvm_tdp_mmu_alloc_root(struct kvm_vcpu *vcpu); |
14 | |
15 | __must_check static inline bool kvm_tdp_mmu_get_root(struct kvm_mmu_page *root) |
16 | { |
17 | return refcount_inc_not_zero(r: &root->tdp_mmu_root_count); |
18 | } |
19 | |
20 | void kvm_tdp_mmu_put_root(struct kvm *kvm, struct kvm_mmu_page *root); |
21 | |
22 | bool kvm_tdp_mmu_zap_leafs(struct kvm *kvm, gfn_t start, gfn_t end, bool flush); |
23 | bool kvm_tdp_mmu_zap_sp(struct kvm *kvm, struct kvm_mmu_page *sp); |
24 | void kvm_tdp_mmu_zap_all(struct kvm *kvm); |
25 | void kvm_tdp_mmu_invalidate_all_roots(struct kvm *kvm); |
26 | void kvm_tdp_mmu_zap_invalidated_roots(struct kvm *kvm); |
27 | |
28 | int kvm_tdp_mmu_map(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault); |
29 | |
30 | bool kvm_tdp_mmu_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range, |
31 | bool flush); |
32 | bool kvm_tdp_mmu_age_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range); |
33 | bool kvm_tdp_mmu_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range); |
34 | bool kvm_tdp_mmu_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range); |
35 | |
36 | bool kvm_tdp_mmu_wrprot_slot(struct kvm *kvm, |
37 | const struct kvm_memory_slot *slot, int min_level); |
38 | bool kvm_tdp_mmu_clear_dirty_slot(struct kvm *kvm, |
39 | const struct kvm_memory_slot *slot); |
40 | void kvm_tdp_mmu_clear_dirty_pt_masked(struct kvm *kvm, |
41 | struct kvm_memory_slot *slot, |
42 | gfn_t gfn, unsigned long mask, |
43 | bool wrprot); |
44 | void kvm_tdp_mmu_zap_collapsible_sptes(struct kvm *kvm, |
45 | const struct kvm_memory_slot *slot); |
46 | |
47 | bool kvm_tdp_mmu_write_protect_gfn(struct kvm *kvm, |
48 | struct kvm_memory_slot *slot, gfn_t gfn, |
49 | int min_level); |
50 | |
51 | void kvm_tdp_mmu_try_split_huge_pages(struct kvm *kvm, |
52 | const struct kvm_memory_slot *slot, |
53 | gfn_t start, gfn_t end, |
54 | int target_level, bool shared); |
55 | |
56 | static inline void kvm_tdp_mmu_walk_lockless_begin(void) |
57 | { |
58 | rcu_read_lock(); |
59 | } |
60 | |
61 | static inline void kvm_tdp_mmu_walk_lockless_end(void) |
62 | { |
63 | rcu_read_unlock(); |
64 | } |
65 | |
66 | int kvm_tdp_mmu_get_walk(struct kvm_vcpu *vcpu, u64 addr, u64 *sptes, |
67 | int *root_level); |
68 | u64 *kvm_tdp_mmu_fast_pf_get_last_sptep(struct kvm_vcpu *vcpu, u64 addr, |
69 | u64 *spte); |
70 | |
71 | #ifdef CONFIG_X86_64 |
72 | static inline bool is_tdp_mmu_page(struct kvm_mmu_page *sp) { return sp->tdp_mmu_page; } |
73 | #else |
74 | static inline bool is_tdp_mmu_page(struct kvm_mmu_page *sp) { return false; } |
75 | #endif |
76 | |
77 | #endif /* __KVM_X86_MMU_TDP_MMU_H */ |
78 | |