diff --git a/arch/arm/include/asm/kvm_mmio.h b/arch/arm/include/asm/kvm_mmio.h
index adcc0d7d3175..3f83db2f6cf0 100644
--- a/arch/arm/include/asm/kvm_mmio.h
+++ b/arch/arm/include/asm/kvm_mmio.h
@@ -37,6 +37,7 @@ struct kvm_exit_mmio {
 	u8		data[8];
 	u32		len;
 	bool		is_write;
+	void		*private;
 };
 
 static inline void kvm_prepare_mmio(struct kvm_run *run,
diff --git a/arch/arm64/include/asm/kvm_mmio.h b/arch/arm64/include/asm/kvm_mmio.h
index fc2f689c0694..9f52beb7cb13 100644
--- a/arch/arm64/include/asm/kvm_mmio.h
+++ b/arch/arm64/include/asm/kvm_mmio.h
@@ -40,6 +40,7 @@ struct kvm_exit_mmio {
 	u8		data[8];
 	u32		len;
 	bool		is_write;
+	void		*private;
 };
 
 static inline void kvm_prepare_mmio(struct kvm_run *run,
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 0e84292c2197..b6e17c886ce2 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -709,6 +709,7 @@ static bool call_range_handler(struct kvm_vcpu *vcpu,
 
 	mmio32.len = 4;
 	mmio32.is_write = mmio->is_write;
+	mmio32.private = mmio->private;
 
 	mmio32.phys_addr = mmio->phys_addr + 4;
 	if (mmio->is_write)