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- // SPDX-License-Identifier: GPL-2.0
- #ifndef __KVM_X86_MMU_TDP_MMU_H
- #define __KVM_X86_MMU_TDP_MMU_H
- #include <linux/kvm_host.h>
- hpa_t kvm_tdp_mmu_get_vcpu_root_hpa(struct kvm_vcpu *vcpu);
- __must_check static inline bool kvm_tdp_mmu_get_root(struct kvm_mmu_page *root)
- {
- return refcount_inc_not_zero(&root->tdp_mmu_root_count);
- }
- void kvm_tdp_mmu_put_root(struct kvm *kvm, struct kvm_mmu_page *root,
- bool shared);
- bool kvm_tdp_mmu_zap_leafs(struct kvm *kvm, gfn_t start, gfn_t end, bool flush);
- bool kvm_tdp_mmu_zap_sp(struct kvm *kvm, struct kvm_mmu_page *sp);
- void kvm_tdp_mmu_zap_all(struct kvm *kvm);
- void kvm_tdp_mmu_invalidate_all_roots(struct kvm *kvm);
- void kvm_tdp_mmu_zap_invalidated_roots(struct kvm *kvm);
- int kvm_tdp_mmu_map(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault);
- bool kvm_tdp_mmu_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range,
- bool flush);
- bool kvm_tdp_mmu_age_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range);
- bool kvm_tdp_mmu_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range);
- bool kvm_tdp_mmu_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range);
- bool kvm_tdp_mmu_wrprot_slot(struct kvm *kvm,
- const struct kvm_memory_slot *slot, int min_level);
- bool kvm_tdp_mmu_clear_dirty_slot(struct kvm *kvm,
- const struct kvm_memory_slot *slot);
- void kvm_tdp_mmu_clear_dirty_pt_masked(struct kvm *kvm,
- struct kvm_memory_slot *slot,
- gfn_t gfn, unsigned long mask,
- bool wrprot);
- void kvm_tdp_mmu_zap_collapsible_sptes(struct kvm *kvm,
- const struct kvm_memory_slot *slot);
- bool kvm_tdp_mmu_write_protect_gfn(struct kvm *kvm,
- struct kvm_memory_slot *slot, gfn_t gfn,
- int min_level);
- void kvm_tdp_mmu_try_split_huge_pages(struct kvm *kvm,
- const struct kvm_memory_slot *slot,
- gfn_t start, gfn_t end,
- int target_level, bool shared);
- static inline void kvm_tdp_mmu_walk_lockless_begin(void)
- {
- rcu_read_lock();
- }
- static inline void kvm_tdp_mmu_walk_lockless_end(void)
- {
- rcu_read_unlock();
- }
- int kvm_tdp_mmu_get_walk(struct kvm_vcpu *vcpu, u64 addr, u64 *sptes,
- int *root_level);
- u64 *kvm_tdp_mmu_fast_pf_get_last_sptep(struct kvm_vcpu *vcpu, u64 addr,
- u64 *spte);
- #ifdef CONFIG_X86_64
- void kvm_mmu_init_tdp_mmu(struct kvm *kvm);
- void kvm_mmu_uninit_tdp_mmu(struct kvm *kvm);
- static inline bool is_tdp_mmu_page(struct kvm_mmu_page *sp) { return sp->tdp_mmu_page; }
- static inline bool is_tdp_mmu(struct kvm_mmu *mmu)
- {
- struct kvm_mmu_page *sp;
- hpa_t hpa = mmu->root.hpa;
- if (WARN_ON(!VALID_PAGE(hpa)))
- return false;
- /*
- * A NULL shadow page is legal when shadowing a non-paging guest with
- * PAE paging, as the MMU will be direct with root_hpa pointing at the
- * pae_root page, not a shadow page.
- */
- sp = to_shadow_page(hpa);
- return sp && is_tdp_mmu_page(sp) && sp->root_count;
- }
- #else
- static inline void kvm_mmu_init_tdp_mmu(struct kvm *kvm) {}
- static inline void kvm_mmu_uninit_tdp_mmu(struct kvm *kvm) {}
- static inline bool is_tdp_mmu_page(struct kvm_mmu_page *sp) { return false; }
- static inline bool is_tdp_mmu(struct kvm_mmu *mmu) { return false; }
- #endif
- #endif /* __KVM_X86_MMU_TDP_MMU_H */
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