diff --git a/hypervisor/arch/x86/Kconfig b/hypervisor/arch/x86/Kconfig
index 24b3f6ca5..bb377d119 100644
--- a/hypervisor/arch/x86/Kconfig
+++ b/hypervisor/arch/x86/Kconfig
@@ -340,13 +340,6 @@ config MCE_ON_PSC_WORKAROUND_DISABLED
 	  the software workaround has negative impact on performance. If all the guest OS
 	  kernels are trusted, this option may be set for performance.
 
-config IOMMU_ENFORCE_SNP
-	bool "IOMMU enforce snoop behavior of DMA operation"
-	default n
-	help
-	  GPU IOMMU doesn't support snoop control capability,
-	  To enable gvt-d,disable IOMMU snoop control by default.
-
 config ENFORCE_TURNOFF_AC
 	bool "Force to disable #AC for Split-locked Access"
 	default n
diff --git a/hypervisor/arch/x86/vtd.c b/hypervisor/arch/x86/vtd.c
index 4cfe3341c..0464278af 100644
--- a/hypervisor/arch/x86/vtd.c
+++ b/hypervisor/arch/x86/vtd.c
@@ -278,6 +278,11 @@ static inline uint8_t iommu_cap_rwbf(uint64_t cap)
 	return ((uint8_t)(cap >> 4U) & 1U);
 }
 
+static inline uint8_t iommu_ecap_sc(uint64_t ecap)
+{
+	return ((uint8_t)(ecap >> 7U) & 1U);
+}
+
 static void dmar_unit_show_capability(struct dmar_drhd_rt *dmar_unit)
 {
 	pr_info("dmar unit[0x%x]", dmar_unit->drhd->reg_base_addr);
@@ -482,17 +487,6 @@ static int32_t dmar_register_hrhd(struct dmar_drhd_rt *dmar_unit)
 		if ((iommu_ecap_c(dmar_unit->ecap) == 0U) && (!dmar_unit->drhd->ignore)) {
 			iommu_page_walk_coherent = false;
 		}
-
-		/* when the hardware support snoop control,
-		 * to make sure snoop control is always enabled,
-		 * the SNP filed in the leaf PTE should be set.
-		 * How to guarantee it when EPT is used as second-level
-		 * translation paging structures?
-		 */
-		if (iommu_ecap_sc(dmar_unit->ecap) == 0U) {
-			dev_dbg(DBG_LEVEL_IOMMU, "dmar uint doesn't support snoop control!");
-		}
-
 		dmar_disable_translation(dmar_unit);
 	}
 
@@ -1020,10 +1014,6 @@ static int32_t iommu_attach_device(const struct iommu_domain *domain, uint8_t bu
 		pr_err("invalid dmar unit");
 		ret = -EINVAL;
 	} else {
-		if (iommu_ecap_sc(dmar_unit->ecap) == 0U) {
-			dev_dbg(DBG_LEVEL_IOMMU, "vm=%d add %x:%x no snoop control!", domain->vm_id, bus, devfun);
-		}
-
 		root_table = (struct dmar_entry *)hpa2hva(dmar_unit->root_table_addr);
 
 		root_entry = root_table + bus;
diff --git a/hypervisor/include/arch/x86/vtd.h b/hypervisor/include/arch/x86/vtd.h
index 73690d11a..7c0b50364 100644
--- a/hypervisor/include/arch/x86/vtd.h
+++ b/hypervisor/include/arch/x86/vtd.h
@@ -212,11 +212,6 @@ static inline uint8_t iommu_ecap_pt(uint64_t ecap)
 	return ((uint8_t)(ecap >> 6U) & 1U);
 }
 
-static inline uint8_t iommu_ecap_sc(uint64_t ecap)
-{
-	return ((uint8_t)(ecap >> 7U) & 1U);
-}
-
 static inline uint16_t iommu_ecap_iro(uint64_t ecap)
 {
 	return ((uint16_t)(ecap >> 8U) & 0x3ffU);