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 hpa_t kvm_tdp_mmu_get_vcpu_root_hpa(struct kvm_vcpu *vcpu);
14
kvm_tdp_mmu_get_root(struct kvm_mmu_page * root)15 __must_check static inline bool kvm_tdp_mmu_get_root(struct kvm_mmu_page *root)
16 {
17 return refcount_inc_not_zero(&root->tdp_mmu_root_count);
18 }
19
20 void kvm_tdp_mmu_put_root(struct kvm *kvm, struct kvm_mmu_page *root,
21 bool shared);
22
23 bool kvm_tdp_mmu_zap_leafs(struct kvm *kvm, gfn_t start, gfn_t end, bool flush);
24 bool kvm_tdp_mmu_zap_sp(struct kvm *kvm, struct kvm_mmu_page *sp);
25 void kvm_tdp_mmu_zap_all(struct kvm *kvm);
26 void kvm_tdp_mmu_invalidate_all_roots(struct kvm *kvm);
27 void kvm_tdp_mmu_zap_invalidated_roots(struct kvm *kvm);
28
29 int kvm_tdp_mmu_map(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault);
30
31 bool kvm_tdp_mmu_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range,
32 bool flush);
33 bool kvm_tdp_mmu_age_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range);
34 bool kvm_tdp_mmu_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range);
35 bool kvm_tdp_mmu_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range);
36
37 bool kvm_tdp_mmu_wrprot_slot(struct kvm *kvm,
38 const struct kvm_memory_slot *slot, int min_level);
39 bool kvm_tdp_mmu_clear_dirty_slot(struct kvm *kvm,
40 const struct kvm_memory_slot *slot);
41 void kvm_tdp_mmu_clear_dirty_pt_masked(struct kvm *kvm,
42 struct kvm_memory_slot *slot,
43 gfn_t gfn, unsigned long mask,
44 bool wrprot);
45 void kvm_tdp_mmu_zap_collapsible_sptes(struct kvm *kvm,
46 const struct kvm_memory_slot *slot);
47
48 bool kvm_tdp_mmu_write_protect_gfn(struct kvm *kvm,
49 struct kvm_memory_slot *slot, gfn_t gfn,
50 int min_level);
51
52 void kvm_tdp_mmu_try_split_huge_pages(struct kvm *kvm,
53 const struct kvm_memory_slot *slot,
54 gfn_t start, gfn_t end,
55 int target_level, bool shared);
56
kvm_tdp_mmu_walk_lockless_begin(void)57 static inline void kvm_tdp_mmu_walk_lockless_begin(void)
58 {
59 rcu_read_lock();
60 }
61
kvm_tdp_mmu_walk_lockless_end(void)62 static inline void kvm_tdp_mmu_walk_lockless_end(void)
63 {
64 rcu_read_unlock();
65 }
66
67 int kvm_tdp_mmu_get_walk(struct kvm_vcpu *vcpu, u64 addr, u64 *sptes,
68 int *root_level);
69 u64 *kvm_tdp_mmu_fast_pf_get_last_sptep(struct kvm_vcpu *vcpu, u64 addr,
70 u64 *spte);
71
72 #ifdef CONFIG_X86_64
is_tdp_mmu_page(struct kvm_mmu_page * sp)73 static inline bool is_tdp_mmu_page(struct kvm_mmu_page *sp) { return sp->tdp_mmu_page; }
74 #else
is_tdp_mmu_page(struct kvm_mmu_page * sp)75 static inline bool is_tdp_mmu_page(struct kvm_mmu_page *sp) { return false; }
76 #endif
77
78 #endif /* __KVM_X86_MMU_TDP_MMU_H */
79