diff --git a/devicemodel/hw/pci/passthrough.c b/devicemodel/hw/pci/passthrough.c
index 2c04a051e..bea9d469f 100644
--- a/devicemodel/hw/pci/passthrough.c
+++ b/devicemodel/hw/pci/passthrough.c
@@ -57,6 +57,8 @@
  */
 #define AUDIO_NHLT_HACK 1
 
+#define PCI_BDF_GPU			0x00000010	/* 00:02.0 */
+
 #define GPU_GSM_SIZE			0x4000000
 /* set gsm gpa=0xDB000000, which is reserved in e820 table */
 #define GPU_GSM_GPA  			0xDB000000
@@ -75,6 +77,9 @@ extern uint64_t audio_nhlt_len;
 static int pciaccess_ref_cnt;
 static pthread_mutex_t ref_cnt_mtx = PTHREAD_MUTEX_INITIALIZER;
 
+uint32_t gsm_start_hpa = 0;
+uint32_t opregion_start_hpa = 0;
+
 struct passthru_dev {
 	struct pci_vdev *dev;
 	struct pcibar bar[PCI_BARMAX + 1];
@@ -412,6 +417,11 @@ passthru_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
 		return -EINVAL;
 	}
 
+	if (is_rtvm && (PCI_BDF(bus, slot, func) == PCI_BDF_GPU)) {
+		warnx("%s RTVM doesn't support GVT-D.", __func__);
+		return -EINVAL;
+	}
+
 	while ((opt = strsep(&opts, ",")) != NULL) {
 		if (!strncmp(opt, "keep_gsi", 8))
 			keep_gsi = true;
@@ -491,6 +501,24 @@ passthru_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
 	if (error < 0)
 		goto done;
 
+	if (ptdev->phys_bdf == PCI_BDF_GPU) {
+		uint32_t gsm_phys, opregion_phys;
+		/* get gsm hpa */
+		gsm_phys = read_config(ptdev->phys_dev, PCIR_BDSM, 4);
+		gsm_start_hpa = gsm_phys & PCIM_BDSM_GSM_MASK;
+		/* initialize the EPT mapping for passthrough GPU gsm region */
+		vm_map_ptdev_mmio(ctx, 0, 2, 0, GPU_GSM_GPA, GPU_GSM_SIZE, gsm_start_hpa);
+
+		/* get opregion hpa */
+		opregion_phys = read_config(ptdev->phys_dev, PCIR_ASLS_CTL, 4);
+		opregion_start_hpa = opregion_phys & PCIM_ASLS_OPREGION_MASK;
+		/* initialize the EPT mapping for passthrough GPU opregion */
+		vm_map_ptdev_mmio(ctx, 0, 2, 0, GPU_OPREGION_GPA, GPU_OPREGION_SIZE, opregion_start_hpa);
+
+		pcidev.rsvd2[0] = GPU_GSM_GPA | (gsm_phys & ~PCIM_BDSM_GSM_MASK) ;
+		pcidev.rsvd2[1] = GPU_OPREGION_GPA | (opregion_phys & ~PCIM_ASLS_OPREGION_MASK);
+	}
+
 	pcidev.virt_bdf = PCI_BDF(dev->bus, dev->slot, dev->func);
 	pcidev.phys_bdf = ptdev->phys_bdf;
 	for (idx = 0; idx <= PCI_BARMAX; idx++) {
@@ -555,6 +583,11 @@ passthru_deinit(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
 		vm_reset_ptdev_intx_info(ctx, virt_bdf, ptdev->phys_bdf, dev->lintr.ioapic_irq, false);
 	}
 
+	if (ptdev->phys_bdf == PCI_BDF_GPU) {
+		vm_unmap_ptdev_mmio(ctx, 0, 2, 0, GPU_GSM_GPA, GPU_GSM_SIZE, gsm_start_hpa);
+		vm_unmap_ptdev_mmio(ctx, 0, 2, 0, GPU_OPREGION_GPA, GPU_OPREGION_SIZE, opregion_start_hpa);
+	}
+
 	pcidev.virt_bdf = PCI_BDF(dev->bus, dev->slot, dev->func);
 	pcidev.phys_bdf = ptdev->phys_bdf;
 	pciaccess_cleanup();
diff --git a/hypervisor/dm/vpci/vpci.c b/hypervisor/dm/vpci/vpci.c
index dfc6b9494..f27e92225 100644
--- a/hypervisor/dm/vpci/vpci.c
+++ b/hypervisor/dm/vpci/vpci.c
@@ -482,8 +482,12 @@ static int32_t write_pt_dev_cfg(struct pci_vdev *vdev, uint32_t offset,
 	} else if (sriovcap_access(vdev, offset)) {
 		write_sriov_cap_reg(vdev, offset, bytes, val);
 	} else {
-		/* passthru to physical device */
-		pci_pdev_write_cfg(vdev->pdev->bdf, offset, bytes, val);
+		/* For GVT-D, prevent stolen memory and opregion memory write */
+		if (!(is_postlaunched_vm(vdev->vpci->vm) && is_gvtd(vdev->pdev->bdf) &&
+			((offset == PCIR_BDSM) || (offset == PCIR_ASLS_CTL)))) {
+			/* passthru to physical device */
+			pci_pdev_write_cfg(vdev->pdev->bdf, offset, bytes, val);
+		}
 	}
 
 	return 0;
@@ -501,8 +505,14 @@ static int32_t read_pt_dev_cfg(const struct pci_vdev *vdev, uint32_t offset,
 	} else if (sriovcap_access(vdev, offset)) {
 		read_sriov_cap_reg(vdev, offset, bytes, val);
 	} else {
-		/* passthru to physical device */
-		*val = pci_pdev_read_cfg(vdev->pdev->bdf, offset, bytes);
+		/* For GVT-D, just return GPA for stolen memory and opregion memory read. */
+		if (is_postlaunched_vm(vdev->vpci->vm) && is_gvtd(vdev->pdev->bdf) &&
+				((offset == PCIR_BDSM) || (offset == PCIR_ASLS_CTL))) {
+			*val = pci_vdev_read_vcfg(vdev, offset, bytes);
+		} else {
+			/* passthru to physical device */
+			*val = pci_pdev_read_cfg(vdev->pdev->bdf, offset, bytes);
+		}
 	}
 
 	return 0;
@@ -752,6 +762,12 @@ int32_t vpci_assign_pcidev(struct acrn_vm *tgt_vm, struct acrn_assign_pcidev *pc
 				pci_vdev_write_vbar(vdev, idx, pcidev->bar[idx]);
 			}
 
+			if (is_gvtd(bdf)) {
+				/* rsvd2[0U] for stolen memory GPA; rsvd2[1U] for opregion memory GPA */
+				pci_vdev_write_vcfg(vdev, PCIR_BDSM, 4U, pcidev->rsvd2[0U]);
+				pci_vdev_write_vcfg(vdev, PCIR_ASLS_CTL, 4U, pcidev->rsvd2[1U]);
+			}
+
 			vdev->bdf.value = pcidev->virt_bdf;
 			spinlock_release(&tgt_vm->vpci.lock);
 			vdev_in_sos->new_owner = vdev;
@@ -800,7 +816,6 @@ int32_t vpci_deassign_pcidev(struct acrn_vm *tgt_vm, struct acrn_assign_pcidev *
 			deinit_vmsi(vdev);
 
 			deinit_vmsix(vdev);
-
 		}
 		spinlock_release(&tgt_vm->vpci.lock);
 
diff --git a/hypervisor/include/hw/pci.h b/hypervisor/include/hw/pci.h
index c594e77f8..a200f6fa3 100644
--- a/hypervisor/include/hw/pci.h
+++ b/hypervisor/include/hw/pci.h
@@ -186,6 +186,10 @@
 #define HOST_BRIDGE_BDF		0U
 #define PCI_STD_NUM_BARS        6U
 
+/* Graphics definitions */
+#define PCIR_BDSM             0x5CU /* BDSM graphics base data of stolen memory register */
+#define PCIR_ASLS_CTL         0xFCU /* Opregion start addr register */
+
 union pci_bdf {
 	uint16_t value;
 	struct {
@@ -251,6 +255,11 @@ struct pci_cfg_ops {
 	void (*pci_write_cfg)(union pci_bdf bdf, uint32_t offset, uint32_t bytes, uint32_t val);
 };
 
+static inline bool is_gvtd(union pci_bdf bdf)
+{
+	return (bdf.value == CONFIG_GPU_SBDF);
+}
+
 static inline uint32_t pci_bar_offset(uint32_t idx)
 {
 	return PCIR_BARS + (idx << 2U);