KVM: x86/mmu: Rename kvm_tdp_mmu_zap_sp() to better indicate its purpose

kvm_tdp_mmu_zap_sp() is only used for NX huge page recovery, so rename
it to kvm_tdp_mmu_zap_possible_nx_huge_page(). In a future commit, this
function will be changed to include logic specific to NX huge page
recovery.

Signed-off-by: Vipin Sharma <vipinsh@google.com>
Signed-off-by: James Houghton <jthoughton@google.com>
https://lore.kernel.org/r/20250707224720.4016504-3-jthoughton@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

Author: shvipin

arch/x86/kvm/mmu/mmu.c

@@ -7673,7 +7673,7 @@ static void kvm_recover_nx_huge_pages(struct kvm *kvm,
 		if (slot && kvm_slot_dirty_track_enabled(slot))
 			unaccount_nx_huge_page(kvm, sp);
 		else if (is_tdp_mmu)
-			flush |= kvm_tdp_mmu_zap_sp(kvm, sp);
+			flush |= kvm_tdp_mmu_zap_possible_nx_huge_page(kvm, sp);
 		else
 			kvm_mmu_prepare_zap_page(kvm, sp, &invalid_list);
 		WARN_ON_ONCE(sp->nx_huge_page_disallowed);

arch/x86/kvm/mmu/tdp_mmu.c

@@ -925,7 +925,8 @@ static void tdp_mmu_zap_root(struct kvm *kvm, struct kvm_mmu_page *root,
 	rcu_read_unlock();
 }
 
-bool kvm_tdp_mmu_zap_sp(struct kvm *kvm, struct kvm_mmu_page *sp)
+bool kvm_tdp_mmu_zap_possible_nx_huge_page(struct kvm *kvm,
+					   struct kvm_mmu_page *sp)
 {
 	u64 old_spte;
 

arch/x86/kvm/mmu/tdp_mmu.h

@@ -64,7 +64,8 @@ static inline struct kvm_mmu_page *tdp_mmu_get_root(struct kvm_vcpu *vcpu,
 }
 
 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);
+bool kvm_tdp_mmu_zap_possible_nx_huge_page(struct kvm *kvm,
+					   struct kvm_mmu_page *sp);
 void kvm_tdp_mmu_zap_all(struct kvm *kvm);
 void kvm_tdp_mmu_invalidate_roots(struct kvm *kvm,
 				  enum kvm_tdp_mmu_root_types root_types);