diff --git a/hypervisor/arch/x86/vtd.c b/hypervisor/arch/x86/vtd.c
index a0d896634..38c84c178 100644
--- a/hypervisor/arch/x86/vtd.c
+++ b/hypervisor/arch/x86/vtd.c
@@ -1301,11 +1301,6 @@ void enable_iommu(void)
 	do_action_for_iommus(dmar_enable);
 }
 
-void disable_iommu(void)
-{
-	do_action_for_iommus(dmar_disable);
-}
-
 void suspend_iommu(void)
 {
 	do_action_for_iommus(dmar_suspend);
diff --git a/hypervisor/include/arch/x86/vtd.h b/hypervisor/include/arch/x86/vtd.h
index 84e29d7dc..bc681243a 100644
--- a/hypervisor/include/arch/x86/vtd.h
+++ b/hypervisor/include/arch/x86/vtd.h
@@ -604,14 +604,6 @@ void destroy_iommu_domain(struct iommu_domain *domain);
  */
 void enable_iommu(void);
 
-/**
- * @brief Disable translation of IOMMUs.
- *
- * Disable address translation of all IOMMUs, which are not ignored on the platform.
- *
- */
-void disable_iommu(void);
-
 /**
  * @brief Suspend IOMMUs.
  *