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
10void kvm_mmu_init_tdp_mmu(struct kvm *kvm);
11void kvm_mmu_uninit_tdp_mmu(struct kvm *kvm);
12
13int 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
20void kvm_tdp_mmu_put_root(struct kvm *kvm, struct kvm_mmu_page *root);
21
22bool kvm_tdp_mmu_zap_leafs(struct kvm *kvm, gfn_t start, gfn_t end, bool flush);
23bool kvm_tdp_mmu_zap_sp(struct kvm *kvm, struct kvm_mmu_page *sp);
24void kvm_tdp_mmu_zap_all(struct kvm *kvm);
25void kvm_tdp_mmu_invalidate_all_roots(struct kvm *kvm);
26void kvm_tdp_mmu_zap_invalidated_roots(struct kvm *kvm);
27
28int kvm_tdp_mmu_map(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault);
29
30bool kvm_tdp_mmu_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range,
31 bool flush);
32bool kvm_tdp_mmu_age_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range);
33bool kvm_tdp_mmu_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range);
34bool kvm_tdp_mmu_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range);
35
36bool kvm_tdp_mmu_wrprot_slot(struct kvm *kvm,
37 const struct kvm_memory_slot *slot, int min_level);
38bool kvm_tdp_mmu_clear_dirty_slot(struct kvm *kvm,
39 const struct kvm_memory_slot *slot);
40void 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);
44void kvm_tdp_mmu_zap_collapsible_sptes(struct kvm *kvm,
45 const struct kvm_memory_slot *slot);
46
47bool kvm_tdp_mmu_write_protect_gfn(struct kvm *kvm,
48 struct kvm_memory_slot *slot, gfn_t gfn,
49 int min_level);
50
51void 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
56static inline void kvm_tdp_mmu_walk_lockless_begin(void)
57{
58 rcu_read_lock();
59}
60
61static inline void kvm_tdp_mmu_walk_lockless_end(void)
62{
63 rcu_read_unlock();
64}
65
66int kvm_tdp_mmu_get_walk(struct kvm_vcpu *vcpu, u64 addr, u64 *sptes,
67 int *root_level);
68u64 *kvm_tdp_mmu_fast_pf_get_last_sptep(struct kvm_vcpu *vcpu, u64 addr,
69 u64 *spte);
70
71#ifdef CONFIG_X86_64
72static inline bool is_tdp_mmu_page(struct kvm_mmu_page *sp) { return sp->tdp_mmu_page; }
73#else
74static 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

source code of linux/arch/x86/kvm/mmu/tdp_mmu.h