diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 2567998b692c..fd7726ff95c6 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -166,6 +166,11 @@ static bool kvm_use_posted_timer_interrupt(struct kvm_vcpu *vcpu)
 	return kvm_can_post_timer_interrupt(vcpu) && vcpu->mode == IN_GUEST_MODE;
 }
 
+static inline u32 kvm_apic_calc_x2apic_ldr(u32 id)
+{
+	return ((id >> 4) << 16) | (1 << (id & 0xf));
+}
+
 static inline bool kvm_apic_map_get_logical_dest(struct kvm_apic_map *map,
 		u32 dest_id, struct kvm_lapic ***cluster, u16 *mask) {
 	switch (map->logical_mode) {
@@ -320,6 +325,18 @@ void kvm_recalculate_apic_map(struct kvm *kvm)
 			continue;
 		}
 
+		/*
+		 * In x2APIC mode, the LDR is read-only and derived directly
+		 * from the x2APIC ID, thus is guaranteed to be addressable.
+		 * KVM reuses kvm_apic_map.phys_map to optimize logical mode
+		 * x2APIC interrupts by reversing the LDR calculation to get
+		 * cluster of APICs, i.e. no additional work is required.
+		 */
+		if (apic_x2apic_mode(apic)) {
+			WARN_ON_ONCE(ldr != kvm_apic_calc_x2apic_ldr(x2apic_id));
+			continue;
+		}
+
 		if (WARN_ON_ONCE(!kvm_apic_map_get_logical_dest(new, ldr,
 								&cluster, &mask))) {
 			new->logical_mode = KVM_APIC_MODE_MAP_DISABLED;
@@ -386,11 +403,6 @@ static inline void kvm_apic_set_dfr(struct kvm_lapic *apic, u32 val)
 	atomic_set_release(&apic->vcpu->kvm->arch.apic_map_dirty, DIRTY);
 }
 
-static inline u32 kvm_apic_calc_x2apic_ldr(u32 id)
-{
-	return ((id >> 4) << 16) | (1 << (id & 0xf));
-}
-
 static inline void kvm_apic_set_x2apic_id(struct kvm_lapic *apic, u32 id)
 {
 	u32 ldr = kvm_apic_calc_x2apic_ldr(id);