45 static void tdp_mmu_put_root(struct kvm *kvm, struct kvm_mmu_page *root)  in tdp_mmu_put_root()  argument
47 	if (kvm_mmu_put_root(kvm, root))  in tdp_mmu_put_root()
48 		kvm_tdp_mmu_free_root(kvm, root);  in tdp_mmu_put_root()
52 					   struct kvm_mmu_page *root)  in tdp_mmu_next_root_valid()  argument
56 	if (list_entry_is_head(root, &kvm->arch.tdp_mmu_roots, link))  in tdp_mmu_next_root_valid()
59 	kvm_mmu_get_root(kvm, root);  in tdp_mmu_next_root_valid()
65 						     struct kvm_mmu_page *root)  in tdp_mmu_next_root()  argument
69 	next_root = list_next_entry(root, link);  in tdp_mmu_next_root()
70 	tdp_mmu_put_root(kvm, root);  in tdp_mmu_next_root()
78  * recent root. (Unless keeping a live reference is desirable.)
105 static bool zap_gfn_range(struct kvm *kvm, struct kvm_mmu_page *root,
108 void kvm_tdp_mmu_free_root(struct kvm *kvm, struct kvm_mmu_page *root)  in kvm_tdp_mmu_free_root()  argument
114 	WARN_ON(root->root_count);  in kvm_tdp_mmu_free_root()
115 	WARN_ON(!root->tdp_mmu_page);  in kvm_tdp_mmu_free_root()
117 	list_del(&root->link);  in kvm_tdp_mmu_free_root()
119 	zap_gfn_range(kvm, root, 0, max_gfn, false, false);  in kvm_tdp_mmu_free_root()
121 	free_page((unsigned long)root->spt);  in kvm_tdp_mmu_free_root()
122 	kmem_cache_free(mmu_page_header_cache, root);  in kvm_tdp_mmu_free_root()
159 	struct kvm_mmu_page *root;  in get_tdp_mmu_vcpu_root()  local
165 	/* Check for an existing root before allocating a new one. */  in get_tdp_mmu_vcpu_root()
166 	for_each_tdp_mmu_root(kvm, root) {  in get_tdp_mmu_vcpu_root()
167 		if (root->role.word == role.word) {  in get_tdp_mmu_vcpu_root()
168 			kvm_mmu_get_root(kvm, root);  in get_tdp_mmu_vcpu_root()
170 			return root;  in get_tdp_mmu_vcpu_root()
174 	root = alloc_tdp_mmu_page(vcpu, 0, vcpu->arch.mmu->shadow_root_level);  in get_tdp_mmu_vcpu_root()
175 	root->root_count = 1;  in get_tdp_mmu_vcpu_root()
177 	list_add(&root->link, &kvm->arch.tdp_mmu_roots);  in get_tdp_mmu_vcpu_root()
181 	return root;  in get_tdp_mmu_vcpu_root()
186 	struct kvm_mmu_page *root;  in kvm_tdp_mmu_get_vcpu_root_hpa()  local
188 	root = get_tdp_mmu_vcpu_root(vcpu);  in kvm_tdp_mmu_get_vcpu_root_hpa()
189 	if (!root)  in kvm_tdp_mmu_get_vcpu_root_hpa()
192 	return __pa(root->spt);  in kvm_tdp_mmu_get_vcpu_root_hpa()
357 	struct kvm_mmu_page *root = sptep_to_sp(root_pt);  in __tdp_mmu_set_spte()  local
358 	int as_id = kvm_mmu_page_as_id(root);  in __tdp_mmu_set_spte()
417  * paging structure root.
449  * non-root pages mapping GFNs strictly within that range. Returns true if
460 static bool zap_gfn_range(struct kvm *kvm, struct kvm_mmu_page *root,  in zap_gfn_range()  argument
465 	tdp_root_for_each_pte(iter, root, start, end) {  in zap_gfn_range()
494  * non-root pages mapping GFNs strictly within that range. Returns true if
501 	struct kvm_mmu_page *root;  in __kvm_tdp_mmu_zap_gfn_range()  local
504 	for_each_tdp_mmu_root_yield_safe(kvm, root)  in __kvm_tdp_mmu_zap_gfn_range()
505 		flush = zap_gfn_range(kvm, root, start, end, can_yield, flush);  in __kvm_tdp_mmu_zap_gfn_range()
656 			       struct kvm_mmu_page *root, gfn_t start,  in kvm_tdp_mmu_handle_hva_range()  argument
661 	struct kvm_mmu_page *root;  in kvm_tdp_mmu_handle_hva_range()  local
665 	for_each_tdp_mmu_root_yield_safe(kvm, root) {  in kvm_tdp_mmu_handle_hva_range()
666 		as_id = kvm_mmu_page_as_id(root);  in kvm_tdp_mmu_handle_hva_range()
684 			ret |= handler(kvm, memslot, root, gfn_start,  in kvm_tdp_mmu_handle_hva_range()
694 				     struct kvm_mmu_page *root, gfn_t start,  in zap_gfn_range_hva_wrapper()  argument
697 	return zap_gfn_range(kvm, root, start, end, false, false);  in zap_gfn_range_hva_wrapper()
712 			 struct kvm_mmu_page *root, gfn_t start, gfn_t end,  in age_gfn_range()  argument
719 	tdp_root_for_each_leaf_pte(iter, root, start, end) {  in age_gfn_range()
759 			struct kvm_mmu_page *root, gfn_t gfn, gfn_t unused,  in test_age_gfn()  argument
764 	tdp_root_for_each_leaf_pte(iter, root, gfn, gfn + 1)  in test_age_gfn()
784 			struct kvm_mmu_page *root, gfn_t gfn, gfn_t unused,  in set_tdp_spte()  argument
797 	tdp_root_for_each_pte(iter, root, gfn, gfn + 1) {  in set_tdp_spte()
837 static bool wrprot_gfn_range(struct kvm *kvm, struct kvm_mmu_page *root,  in wrprot_gfn_range()  argument
846 	for_each_tdp_pte_min_level(iter, root->spt, root->role.level,  in wrprot_gfn_range()
871 	struct kvm_mmu_page *root;  in kvm_tdp_mmu_wrprot_slot()  local
875 	for_each_tdp_mmu_root_yield_safe(kvm, root) {  in kvm_tdp_mmu_wrprot_slot()
876 		root_as_id = kvm_mmu_page_as_id(root);  in kvm_tdp_mmu_wrprot_slot()
880 		spte_set |= wrprot_gfn_range(kvm, root, slot->base_gfn,  in kvm_tdp_mmu_wrprot_slot()
894 static bool clear_dirty_gfn_range(struct kvm *kvm, struct kvm_mmu_page *root,  in clear_dirty_gfn_range()  argument
901 	tdp_root_for_each_leaf_pte(iter, root, start, end) {  in clear_dirty_gfn_range()
932 	struct kvm_mmu_page *root;  in kvm_tdp_mmu_clear_dirty_slot()  local
936 	for_each_tdp_mmu_root_yield_safe(kvm, root) {  in kvm_tdp_mmu_clear_dirty_slot()
937 		root_as_id = kvm_mmu_page_as_id(root);  in kvm_tdp_mmu_clear_dirty_slot()
941 		spte_set |= clear_dirty_gfn_range(kvm, root, slot->base_gfn,  in kvm_tdp_mmu_clear_dirty_slot()
955 static void clear_dirty_pt_masked(struct kvm *kvm, struct kvm_mmu_page *root,  in clear_dirty_pt_masked()  argument
961 	tdp_root_for_each_leaf_pte(iter, root, gfn + __ffs(mask),  in clear_dirty_pt_masked()
1000 	struct kvm_mmu_page *root;  in kvm_tdp_mmu_clear_dirty_pt_masked()  local
1004 	for_each_tdp_mmu_root(kvm, root) {  in kvm_tdp_mmu_clear_dirty_pt_masked()
1005 		root_as_id = kvm_mmu_page_as_id(root);  in kvm_tdp_mmu_clear_dirty_pt_masked()
1009 		clear_dirty_pt_masked(kvm, root, gfn, mask, wrprot);  in kvm_tdp_mmu_clear_dirty_pt_masked()
1018 static bool set_dirty_gfn_range(struct kvm *kvm, struct kvm_mmu_page *root,  in set_dirty_gfn_range()  argument
1025 	tdp_root_for_each_pte(iter, root, start, end) {  in set_dirty_gfn_range()
1048 	struct kvm_mmu_page *root;  in kvm_tdp_mmu_slot_set_dirty()  local
1052 	for_each_tdp_mmu_root_yield_safe(kvm, root) {  in kvm_tdp_mmu_slot_set_dirty()
1053 		root_as_id = kvm_mmu_page_as_id(root);  in kvm_tdp_mmu_slot_set_dirty()
1057 		spte_set |= set_dirty_gfn_range(kvm, root, slot->base_gfn,  in kvm_tdp_mmu_slot_set_dirty()
1068 				       struct kvm_mmu_page *root,  in zap_collapsible_spte_range()  argument
1075 	tdp_root_for_each_pte(iter, root, start, end) {  in zap_collapsible_spte_range()
1107 	struct kvm_mmu_page *root;  in kvm_tdp_mmu_zap_collapsible_sptes()  local
1110 	for_each_tdp_mmu_root_yield_safe(kvm, root) {  in kvm_tdp_mmu_zap_collapsible_sptes()
1111 		root_as_id = kvm_mmu_page_as_id(root);  in kvm_tdp_mmu_zap_collapsible_sptes()
1115 		zap_collapsible_spte_range(kvm, root, slot->base_gfn,  in kvm_tdp_mmu_zap_collapsible_sptes()
1125 static bool write_protect_gfn(struct kvm *kvm, struct kvm_mmu_page *root,  in write_protect_gfn()  argument
1132 	tdp_root_for_each_leaf_pte(iter, root, gfn, gfn + 1) {  in write_protect_gfn()
1154 	struct kvm_mmu_page *root;  in kvm_tdp_mmu_write_protect_gfn()  local
1159 	for_each_tdp_mmu_root(kvm, root) {  in kvm_tdp_mmu_write_protect_gfn()
1160 		root_as_id = kvm_mmu_page_as_id(root);  in kvm_tdp_mmu_write_protect_gfn()
1164 		spte_set |= write_protect_gfn(kvm, root, gfn);  in kvm_tdp_mmu_write_protect_gfn()