diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c
index 4efb983cff436..1ef0704420d96 100644
--- a/arch/arm64/kvm/mmu.c
+++ b/arch/arm64/kvm/mmu.c
@@ -641,7 +641,7 @@ static int get_user_mapping_size(struct kvm *kvm, u64 addr)
 {
 	struct kvm_pgtable pgt = {
 		.pgd		= (kvm_pte_t *)kvm->mm->pgd,
-		.ia_bits	= VA_BITS,
+		.ia_bits	= vabits_actual,
 		.start_level	= (KVM_PGTABLE_MAX_LEVELS -
 				   CONFIG_PGTABLE_LEVELS),
 		.mm_ops		= &kvm_user_mm_ops,