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
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
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
35 bool kvm_tdp_mmu_wrprot_slot(struct kvm *kvm,
36 const struct kvm_memory_slot *slot, int min_level);
37 bool kvm_tdp_mmu_clear_dirty_slot(struct kvm *kvm,
38 const struct kvm_memory_slot *slot);
39 void kvm_tdp_mmu_clear_dirty_pt_masked(struct kvm *kvm,
40 struct kvm_memory_slot *slot,
41 gfn_t gfn, unsigned long mask,
42 bool wrprot);
43 void kvm_tdp_mmu_zap_collapsible_sptes(struct kvm *kvm,
44 const struct kvm_memory_slot *slot);
45
46 bool kvm_tdp_mmu_write_protect_gfn(struct kvm *kvm,
47 struct kvm_memory_slot *slot, gfn_t gfn,
48 int min_level);
49
50 void kvm_tdp_mmu_try_split_huge_pages(struct kvm *kvm,
51 const struct kvm_memory_slot *slot,
52 gfn_t start, gfn_t end,
53 int target_level, bool shared);
54
kvm_tdp_mmu_walk_lockless_begin(void)55 static inline void kvm_tdp_mmu_walk_lockless_begin(void)
56 {
57 rcu_read_lock();
58 }
59
kvm_tdp_mmu_walk_lockless_end(void)60 static inline void kvm_tdp_mmu_walk_lockless_end(void)
61 {
62 rcu_read_unlock();
63 }
64
65 int kvm_tdp_mmu_get_walk(struct kvm_vcpu *vcpu, u64 addr, u64 *sptes,
66 int *root_level);
67 u64 *kvm_tdp_mmu_fast_pf_get_last_sptep(struct kvm_vcpu *vcpu, gfn_t gfn,
68 u64 *spte);
69
70 #ifdef CONFIG_X86_64
is_tdp_mmu_page(struct kvm_mmu_page * sp)71 static inline bool is_tdp_mmu_page(struct kvm_mmu_page *sp) { return sp->tdp_mmu_page; }
72 #else
is_tdp_mmu_page(struct kvm_mmu_page * sp)73 static inline bool is_tdp_mmu_page(struct kvm_mmu_page *sp) { return false; }
74 #endif
75
76 #endif /* __KVM_X86_MMU_TDP_MMU_H */
77