diff --git a/blk-virtio.c b/blk-virtio.c
index 7670f0c..e7eb44e 100644
--- a/blk-virtio.c
+++ b/blk-virtio.c
@@ -6,12 +6,80 @@
 
 #define VIRTIO_PCI_IOPORT_SIZE		24
 
+struct device {
+	uint32_t		guest_features;
+	uint8_t			status;
+};
+
+static struct device device;
+
+static bool blk_virtio_in(struct kvm *self, uint16_t port, void *data, int size, uint32_t count)
+{
+	unsigned long offset;
+
+	offset		= port - IOPORT_VIRTIO;
+
+	switch (offset) {
+	case VIRTIO_PCI_HOST_FEATURES:
+		ioport__write32(data, 0x00);
+		break;
+	case VIRTIO_PCI_GUEST_FEATURES:
+	case VIRTIO_PCI_QUEUE_PFN:
+	case VIRTIO_PCI_QUEUE_NUM:
+	case VIRTIO_PCI_QUEUE_SEL:
+	case VIRTIO_PCI_QUEUE_NOTIFY:
+		return false;
+	case VIRTIO_PCI_STATUS:
+		ioport__write8(data, device.status);
+		break;
+	case VIRTIO_PCI_ISR:
+	case VIRTIO_MSI_CONFIG_VECTOR:
+	default:
+		return false;
+	};
+
+	return true;
+}
+
+#include <stdio.h>
+
+static bool blk_virtio_out(struct kvm *self, uint16_t port, void *data, int size, uint32_t count)
+{
+	unsigned long offset;
+
+	offset		= port - IOPORT_VIRTIO;
+
+	switch (offset) {
+	case VIRTIO_PCI_GUEST_FEATURES:
+		device.guest_features	= ioport__read32(data);
+		break;
+	case VIRTIO_PCI_QUEUE_PFN:
+	case VIRTIO_PCI_QUEUE_SEL:
+	case VIRTIO_PCI_QUEUE_NOTIFY:
+		return false;
+	case VIRTIO_PCI_STATUS:
+		device.status		= ioport__read8(data);
+		break;
+	case VIRTIO_MSI_CONFIG_VECTOR:
+	case VIRTIO_MSI_QUEUE_VECTOR:
+	default:
+		return false;
+	};
+
+	return true;
+}
+
+static struct ioport_operations blk_virtio_io_ops = {
+	.io_in		= blk_virtio_in,
+	.io_out		= blk_virtio_out,
+};
+
 #define PCI_VENDOR_ID_REDHAT_QUMRANET		0x1af4
 #define PCI_DEVICE_ID_VIRTIO_BLK		0x1001
 #define PCI_SUBSYSTEM_VENDOR_ID_REDHAT_QUMRANET	0x1af4
 #define PCI_SUBSYSTEM_ID_VIRTIO_BLK		0x0002
 
-static struct pci_device_header blk_virtio_device = {
+static struct pci_device_header blk_virtio_pci_device = {
 	.vendor_id		= PCI_VENDOR_ID_REDHAT_QUMRANET,
 	.device_id		= PCI_DEVICE_ID_VIRTIO_BLK,
 	.header_type		= PCI_HEADER_TYPE_NORMAL,
@@ -22,56 +90,9 @@ static struct pci_device_header blk_virtio_device = {
 	.bar[0]			= IOPORT_VIRTIO | PCI_BASE_ADDRESS_SPACE_IO,
 };
 
-static bool blk_virtio_in(struct kvm *self, uint16_t port, void *data, int size, uint32_t count)
-{
-	unsigned long offset;
-
-	offset		= port - IOPORT_VIRTIO;
-
-	switch (offset) {
-	case VIRTIO_PCI_HOST_FEATURES:
-	case VIRTIO_PCI_GUEST_FEATURES:
-	case VIRTIO_PCI_QUEUE_PFN:
-	case VIRTIO_PCI_QUEUE_NUM:
-	case VIRTIO_PCI_QUEUE_SEL:
-	case VIRTIO_PCI_QUEUE_NOTIFY:
-	case VIRTIO_PCI_STATUS:
-	case VIRTIO_PCI_ISR:
-	case VIRTIO_MSI_CONFIG_VECTOR:
-		return true;
-	};
-
-	return false;
-}
-
-static bool blk_virtio_out(struct kvm *self, uint16_t port, void *data, int size, uint32_t count)
-{
-	unsigned long offset;
-
-	offset		= port - IOPORT_VIRTIO;
-
-	switch (offset) {
-	case VIRTIO_PCI_GUEST_FEATURES:
-	case VIRTIO_PCI_QUEUE_PFN:
-	case VIRTIO_PCI_QUEUE_SEL:
-	case VIRTIO_PCI_QUEUE_NOTIFY:
-	case VIRTIO_PCI_STATUS:
-	case VIRTIO_MSI_CONFIG_VECTOR:
-	case VIRTIO_MSI_QUEUE_VECTOR:
-		return true;
-	};
-
-	return false;
-}
-
-static struct ioport_operations blk_virtio_io_ops = {
-	.io_in		= blk_virtio_in,
-	.io_out		= blk_virtio_out,
-};
-
 void blk_virtio__init(void)
 {
-	pci__register(&blk_virtio_device, 1);
+	pci__register(&blk_virtio_pci_device, 1);
 
 	ioport__register(IOPORT_VIRTIO, &blk_virtio_io_ops, VIRTIO_PCI_IOPORT_SIZE);
 }
diff --git a/include/kvm/ioport.h b/include/kvm/ioport.h
index eaedc1e..b4ae9ab 100644
--- a/include/kvm/ioport.h
+++ b/include/kvm/ioport.h
@@ -17,4 +17,24 @@ struct ioport_operations {
 
 void ioport__register(uint16_t port, struct ioport_operations *ops, int count);
 
+static inline uint8_t ioport__read8(uint8_t *data)
+{
+	return *data;
+}
+
+static inline uint32_t ioport__read32(uint32_t *data)
+{
+	return *data;
+}
+
+static inline void ioport__write8(uint8_t *data, uint8_t value)
+{
+	*data		 = value;
+}
+
+static inline void ioport__write32(uint32_t *data, uint32_t value)
+{
+	*data		 = value;
+}
+
 #endif /* KVM__IOPORT_H */