diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 0ab00666670d..6e63a0cb76f1 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -1162,6 +1162,7 @@ static inline bool __vcpu_write_sys_reg_to_cpu(u64 val, int reg)
 struct kvm_vm_stat {
 	struct kvm_vm_stat_generic generic;
 	atomic64_t protected_hyp_mem;
+	atomic64_t protected_shared_mem;
 };
 
 struct kvm_vcpu_stat {
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 0b797ed6f41b..bff8c1212f75 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -32,6 +32,7 @@
 const struct _kvm_stats_desc kvm_vm_stats_desc[] = {
 	KVM_GENERIC_VM_STATS(),
 	STATS_DESC_ICOUNTER(VM, protected_hyp_mem),
+	STATS_DESC_ICOUNTER(VM, protected_shared_mem),
 };
 
 const struct kvm_stats_header kvm_vm_stats_header = {
diff --git a/arch/arm64/kvm/hypercalls.c b/arch/arm64/kvm/hypercalls.c
index b0e9975293d4..26e1f554f430 100644
--- a/arch/arm64/kvm/hypercalls.c
+++ b/arch/arm64/kvm/hypercalls.c
@@ -85,6 +85,8 @@ static bool kvm_smccc_default_allowed(u32 func_id)
 	case ARM_SMCCC_VERSION_FUNC_ID:
 	case ARM_SMCCC_ARCH_FEATURES_FUNC_ID:
 	case ARM_SMCCC_VENDOR_HYP_KVM_MMIO_GUARD_MAP_FUNC_ID:
+	case ARM_SMCCC_VENDOR_HYP_KVM_MEM_SHARE_FUNC_ID:
+	case ARM_SMCCC_VENDOR_HYP_KVM_MEM_UNSHARE_FUNC_ID:
 		return true;
 	default:
 		/* PSCI 0.2 and up is in the 0:0x1f range */
@@ -396,6 +398,16 @@ int kvm_smccc_call_handler(struct kvm_vcpu *vcpu)
 		pkvm_host_reclaim_page(vcpu->kvm, smccc_get_arg1(vcpu));
 		val[0] = SMCCC_RET_SUCCESS;
 		break;
+	case ARM_SMCCC_VENDOR_HYP_KVM_MEM_SHARE_FUNC_ID:
+	case ARM_SMCCC_VENDOR_HYP_KVM_MEM_UNSHARE_FUNC_ID:
+		if (!kvm_vm_is_protected(vcpu->kvm))
+			break;
+		atomic64_add(
+			func_id == ARM_SMCCC_VENDOR_HYP_KVM_MEM_SHARE_FUNC_ID ?
+			PAGE_SIZE : -PAGE_SIZE,
+			&vcpu->kvm->stat.protected_shared_mem);
+		val[0] = SMCCC_RET_SUCCESS;
+		break;
 	case ARM_SMCCC_TRNG_VERSION:
 	case ARM_SMCCC_TRNG_FEATURES:
 	case ARM_SMCCC_TRNG_GET_UUID: