5 files changed, 15 insertions, 2 deletions
diff --git a/include/hw/compat.h b/include/hw/compat.h
index 94c8097..095de5d 100644
--- a/include/hw/compat.h
+++ b/include/hw/compat.h
@@ -1,6 +1,9 @@
 #ifndef HW_COMPAT_H
 #define HW_COMPAT_H
 
+#define HW_COMPAT_2_4 \
+        /* empty */
+
 #define HW_COMPAT_2_3 \
         {\
             .driver   = "virtio-blk-pci",\
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 7c9f3a5..ab5413f 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -296,7 +296,11 @@ int e820_add_entry(uint64_t, uint64_t, uint32_t);
 int e820_get_num_entries(void);
 bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
 
+#define PC_COMPAT_2_4 \
+        HW_COMPAT_2_4
+
 #define PC_COMPAT_2_3 \
+        PC_COMPAT_2_4 \
         HW_COMPAT_2_3 \
         {\
             .driver   = TYPE_X86_CPU,\
diff --git a/include/hw/timer/hpet.h b/include/hw/timer/hpet.h
index 773953b..d872909 100644
--- a/include/hw/timer/hpet.h
+++ b/include/hw/timer/hpet.h
@@ -16,9 +16,9 @@
 #include "qom/object.h"
 
 #define HPET_BASE               0xfed00000
-#define HPET_CLK_PERIOD         10000000ULL /* 10000000 femtoseconds == 10ns*/
+#define HPET_CLK_PERIOD         10 /* 10 ns*/
 
-#define FS_PER_NS 1000000
+#define FS_PER_NS 1000000       /* 1000000 femtoseconds == 1 ns */
 #define HPET_MIN_TIMERS         3
 #define HPET_MAX_TIMERS         32
 
diff --git a/include/hw/virtio/vhost-backend.h b/include/hw/virtio/vhost-backend.h
index e472f29..3a0f6e2 100644
--- a/include/hw/virtio/vhost-backend.h
+++ b/include/hw/virtio/vhost-backend.h
@@ -24,12 +24,16 @@ typedef int (*vhost_call)(struct vhost_dev *dev, unsigned long int request,
              void *arg);
 typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque);
 typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev);
+typedef int (*vhost_backend_get_vq_index)(struct vhost_dev *dev, int idx);
+typedef int (*vhost_backend_set_vring_enable)(struct vhost_dev *dev, int enable);
 
 typedef struct VhostOps {
     VhostBackendType backend_type;
     vhost_call vhost_call;
     vhost_backend_init vhost_backend_init;
     vhost_backend_cleanup vhost_backend_cleanup;
+    vhost_backend_get_vq_index vhost_backend_get_vq_index;
+    vhost_backend_set_vring_enable vhost_backend_set_vring_enable;
 } VhostOps;
 
 extern const VhostOps user_ops;
diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index dd51050..c3758f3 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -47,6 +47,8 @@ struct vhost_dev {
     unsigned long long features;
     unsigned long long acked_features;
     unsigned long long backend_features;
+    unsigned long long protocol_features;
+    unsigned long long max_queues;
     bool started;
     bool log_enabled;
     unsigned long long log_size;