diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index 2d4bb4c..11718b49 100644
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -2937,20 +2937,41 @@
 	ICH_PCR, ICH_SCR, ICH_SIS_TCR
 };
 
-static int __devinit snd_intel8x0_inside_vm(void)
+static int __devinit snd_intel8x0_inside_vm(struct pci_dev *pci)
 {
-	int result = inside_vm;
+	int result  = inside_vm;
+	char *msg   = NULL;
 
-	if (result < 0) {
-		/* detect KVM and Parallels virtual environments */
-		result = kvm_para_available();
-#if defined(__i386__) || defined(__x86_64__)
-		result = result || boot_cpu_has(X86_FEATURE_HYPERVISOR);
-#endif
+	/* check module parameter first (override detection) */
+	if (result >= 0) {
+		msg = result ? "enable (forced) VM" : "disable (forced) VM";
+		goto fini;
 	}
 
-	if (result)
-		printk(KERN_INFO "intel8x0: enable KVM optimization\n");
+	/* detect KVM and Parallels virtual environments */
+	result = kvm_para_available();
+#ifdef X86_FEATURE_HYPERVISOR
+	result = result || boot_cpu_has(X86_FEATURE_HYPERVISOR);
+#endif
+	if (!result)
+		goto fini;
+
+	/* check for known (emulated) devices */
+	if (pci->subsystem_vendor == 0x1af4 &&
+	    pci->subsystem_device == 0x1100) {
+		/* KVM emulated sound, PCI SSID: 1af4:1100 */
+		msg = "enable KVM";
+	} else if (pci->subsystem_vendor == 0x1ab8) {
+		/* Parallels VM emulated sound, PCI SSID: 1ab8:xxxx */
+		msg = "enable Parallels VM";
+	} else {
+		msg = "disable (unknown or VT-d) VM";
+		result = 0;
+	}
+
+fini:
+	if (msg != NULL)
+		printk(KERN_INFO "intel8x0: %s optimization\n", msg);
 
 	return result;
 }
@@ -3022,7 +3043,7 @@
 	if (xbox)
 		chip->xbox = 1;
 
-	chip->inside_vm = snd_intel8x0_inside_vm();
+	chip->inside_vm = snd_intel8x0_inside_vm(pci);
 
 	if (pci->vendor == PCI_VENDOR_ID_INTEL &&
 	    pci->device == PCI_DEVICE_ID_INTEL_440MX)