KVM: x86/mmu: Drop @max_level from kvm_mmu_max_mapping_level()

Drop the @max_level parameter from kvm_mmu_max_mapping_level(). All
callers pass in PG_LEVEL_NUM, so @max_level can be replaced with
PG_LEVEL_NUM in the function body.

No functional change intended.

Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/20240823235648.3236880-2-dmatlack@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

Author: dmatlack

arch/x86/kvm/mmu/mmu.c

@@ -3114,13 +3114,12 @@ static int __kvm_mmu_max_mapping_level(struct kvm *kvm,
 }
 
 int kvm_mmu_max_mapping_level(struct kvm *kvm,
-			      const struct kvm_memory_slot *slot, gfn_t gfn,
-			      int max_level)
+			      const struct kvm_memory_slot *slot, gfn_t gfn)
 {
 	bool is_private = kvm_slot_can_be_private(slot) &&
 			  kvm_mem_is_private(kvm, gfn);
 
-	return __kvm_mmu_max_mapping_level(kvm, slot, gfn, max_level, is_private);
+	return __kvm_mmu_max_mapping_level(kvm, slot, gfn, PG_LEVEL_NUM, is_private);
 }
 
 void kvm_mmu_hugepage_adjust(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault)
@@ -6919,8 +6918,7 @@ static bool kvm_mmu_zap_collapsible_spte(struct kvm *kvm,
 		 * mapping if the indirect sp has level = 1.
 		 */
 		if (sp->role.direct &&
-		    sp->role.level < kvm_mmu_max_mapping_level(kvm, slot, sp->gfn,
-							       PG_LEVEL_NUM)) {
+		    sp->role.level < kvm_mmu_max_mapping_level(kvm, slot, sp->gfn)) {
 			kvm_zap_one_rmap_spte(kvm, rmap_head, sptep);
 
 			if (kvm_available_flush_remote_tlbs_range())

arch/x86/kvm/mmu/mmu_internal.h

@@ -346,8 +346,7 @@ static inline int kvm_mmu_do_page_fault(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa,
 }
 
 int kvm_mmu_max_mapping_level(struct kvm *kvm,
-			      const struct kvm_memory_slot *slot, gfn_t gfn,
-			      int max_level);
+			      const struct kvm_memory_slot *slot, gfn_t gfn);
 void kvm_mmu_hugepage_adjust(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault);
 void disallowed_hugepage_adjust(struct kvm_page_fault *fault, u64 spte, int cur_level);
 

arch/x86/kvm/mmu/tdp_mmu.c

@@ -1626,8 +1626,7 @@ static void zap_collapsible_spte_range(struct kvm *kvm,
 		if (iter.gfn < start || iter.gfn >= end)
 			continue;
 
-		max_mapping_level = kvm_mmu_max_mapping_level(kvm, slot,
-							      iter.gfn, PG_LEVEL_NUM);
+		max_mapping_level = kvm_mmu_max_mapping_level(kvm, slot, iter.gfn);
 		if (max_mapping_level < iter.level)
 			continue;