pc,vhost,virtio fixes, enhancements

virtio bi-endian support
 new command to resync RTC
 misc bugfixes and cleanups
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc,vhost,virtio fixes, enhancements

virtio bi-endian support
new command to resync RTC
misc bugfixes and cleanups

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Sun 29 Jun 2014 17:41:13 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"

* remotes/mst/tags/for_upstream: (37 commits)
  tests: add human format test for string output visitor
  vhost-net: disable when cross-endian
  target-ppc: enable virtio endian ambivalent support
  virtio-9p: use virtio wrappers to access headers
  virtio-serial-bus: use virtio wrappers to access headers
  virtio-scsi: use virtio wrappers to access headers
  virtio-blk: use virtio wrappers to access headers
  virtio-balloon: use virtio wrappers to access page frame numbers
  virtio-net: use virtio wrappers to access headers
  virtio: allow byte swapping for vring
  virtio: memory accessors for endian-ambivalent targets
  virtio: add endian-ambivalent support to VirtIODevice
  cpu: introduce CPUClass::virtio_is_big_endian()
  exec: introduce target_words_bigendian() helper
  virtio: add subsections to the migration stream
  virtio-rng: implement per-device migration calls
  virtio-balloon: implement per-device migration calls
  virtio-serial: implement per-device migration calls
  virtio-blk: implement per-device migration calls
  virtio-net: implement per-device migration calls
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

docs/specs/vhost-user.txt

@@ -78,14 +78,14 @@ Depending on the request type, payload can be:
    Padding: 32-bit
 
    A region is:
-   ---------------------------------------
+   -----------------------------------------------------
-   | guest address | size | user address |
+   | guest address | size | user address | mmap offset |
-   ---------------------------------------
+   -----------------------------------------------------
 
    Guest address: a 64-bit guest address of the region
    Size: a 64-bit size
    User address: a 64-bit user address
-
+   mmap offset: 64-bit offset where region starts in the mapped memory
 
 In QEMU the vhost-user message is implemented with the following struct:
 
@@ -132,7 +132,7 @@ Message types
 
  * VHOST_USER_GET_FEATURES
 
-      Id: 2
+      Id: 1
       Equivalent ioctl: VHOST_GET_FEATURES
       Master payload: N/A
       Slave payload: u64
@@ -141,7 +141,7 @@ Message types
 
  * VHOST_USER_SET_FEATURES
 
-      Id: 3
+      Id: 2
       Ioctl: VHOST_SET_FEATURES
       Master payload: u64
 
@@ -149,7 +149,7 @@ Message types
 
  * VHOST_USER_SET_OWNER
 
-      Id: 4
+      Id: 3
       Equivalent ioctl: VHOST_SET_OWNER
       Master payload: N/A
 
@@ -159,7 +159,7 @@ Message types
 
  * VHOST_USER_RESET_OWNER
 
-      Id: 5
+      Id: 4
       Equivalent ioctl: VHOST_RESET_OWNER
       Master payload: N/A
 
@@ -168,7 +168,7 @@ Message types
 
  * VHOST_USER_SET_MEM_TABLE
 
-      Id: 6
+      Id: 5
       Equivalent ioctl: VHOST_SET_MEM_TABLE
       Master payload: memory regions description
 
@@ -179,7 +179,7 @@ Message types
 
  * VHOST_USER_SET_LOG_BASE
 
-      Id: 7
+      Id: 6
       Equivalent ioctl: VHOST_SET_LOG_BASE
       Master payload: u64
 
@@ -187,7 +187,7 @@ Message types
 
  * VHOST_USER_SET_LOG_FD
 
-      Id: 8
+      Id: 7
       Equivalent ioctl: VHOST_SET_LOG_FD
       Master payload: N/A
 
@@ -195,7 +195,7 @@ Message types
 
  * VHOST_USER_SET_VRING_NUM
 
-      Id: 9
+      Id: 8
       Equivalent ioctl: VHOST_SET_VRING_NUM
       Master payload: vring state description
 
@@ -203,7 +203,7 @@ Message types
 
  * VHOST_USER_SET_VRING_ADDR
 
-      Id: 10
+      Id: 9
       Equivalent ioctl: VHOST_SET_VRING_ADDR
       Master payload: vring address description
       Slave payload: N/A
@@ -212,7 +212,7 @@ Message types
 
  * VHOST_USER_SET_VRING_BASE
 
-      Id: 11
+      Id: 10
       Equivalent ioctl: VHOST_SET_VRING_BASE
       Master payload: vring state description
 
@@ -220,7 +220,7 @@ Message types
 
  * VHOST_USER_GET_VRING_BASE
 
-      Id: 12
+      Id: 11
       Equivalent ioctl: VHOST_USER_GET_VRING_BASE
       Master payload: vring state description
       Slave payload: vring state description
@@ -229,7 +229,7 @@ Message types
 
  * VHOST_USER_SET_VRING_KICK
 
-      Id: 13
+      Id: 12
       Equivalent ioctl: VHOST_SET_VRING_KICK
       Master payload: u64
 
@@ -242,7 +242,7 @@ Message types
 
  * VHOST_USER_SET_VRING_CALL
 
-      Id: 14
+      Id: 13
       Equivalent ioctl: VHOST_SET_VRING_CALL
       Master payload: u64
 
@@ -255,7 +255,7 @@ Message types
 
  * VHOST_USER_SET_VRING_ERR
 
-      Id: 15
+      Id: 14
       Equivalent ioctl: VHOST_SET_VRING_ERR
       Master payload: u64
 

exec.c

@@ -1456,6 +1456,13 @@ int qemu_get_ram_fd(ram_addr_t addr)
     return block->fd;
 }
 
+void *qemu_get_ram_block_host_ptr(ram_addr_t addr)
+{
+    RAMBlock *block = qemu_get_ram_block(addr);
+
+    return block->host;
+}
+
 /* Return a host pointer to ram allocated with qemu_ram_alloc.
    With the exception of the softmmu code in this file, this should
    only be used for local memory (e.g. video ram) that the device owns,
@@ -2752,14 +2759,12 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr,
 }
 #endif
 
-#if !defined(CONFIG_USER_ONLY)
-
 /*
  * A helper function for the _utterly broken_ virtio device model to find out if
  * it's running on a big endian machine. Don't do this at home kids!
  */
-bool virtio_is_big_endian(void);
+bool target_words_bigendian(void);
-bool virtio_is_big_endian(void)
+bool target_words_bigendian(void)
 {
 #if defined(TARGET_WORDS_BIGENDIAN)
     return true;
@@ -2768,8 +2773,6 @@ bool virtio_is_big_endian(void)
 #endif
 }
 
-#endif
-
 #ifndef CONFIG_USER_ONLY
 bool cpu_physical_memory_is_io(hwaddr phys_addr)
 {

hw/9pfs/virtio-9p-device.c

@@ -19,6 +19,7 @@
 #include "fsdev/qemu-fsdev.h"
 #include "virtio-9p-xattr.h"
 #include "virtio-9p-coth.h"
+#include "hw/virtio/virtio-access.h"
 
 static uint32_t virtio_9p_get_features(VirtIODevice *vdev, uint32_t features)
 {
@@ -34,7 +35,7 @@ static void virtio_9p_get_config(VirtIODevice *vdev, uint8_t *config)
 
     len = strlen(s->tag);
     cfg = g_malloc0(sizeof(struct virtio_9p_config) + len);
-    stw_p(&cfg->tag_len, len);
+    virtio_stw_p(vdev, &cfg->tag_len, len);
     /* We don't copy the terminating null to config space */
     memcpy(cfg->tag, s->tag, len);
     memcpy(config, cfg, s->config_size);

hw/block/virtio-blk.c

@@ -27,6 +27,7 @@
 # include <scsi/sg.h>
 #endif
 #include "hw/virtio/virtio-bus.h"
+#include "hw/virtio/virtio-access.h"
 
 static VirtIOBlockReq *virtio_blk_alloc_request(VirtIOBlock *s)
 {
@@ -88,7 +89,8 @@ static void virtio_blk_rw_complete(void *opaque, int ret)
     trace_virtio_blk_rw_complete(req, ret);
 
     if (ret) {
-        bool is_read = !(ldl_p(&req->out.type) & VIRTIO_BLK_T_OUT);
+        int p = virtio_ldl_p(VIRTIO_DEVICE(req->dev), &req->out.type);
+        bool is_read = !(p & VIRTIO_BLK_T_OUT);
         if (virtio_blk_handle_rw_error(req, -ret, is_read))
             return;
     }
@@ -130,6 +132,8 @@ int virtio_blk_handle_scsi_req(VirtIOBlock *blk,
 {
     int status = VIRTIO_BLK_S_OK;
     struct virtio_scsi_inhdr *scsi = NULL;
+    VirtIODevice *vdev = VIRTIO_DEVICE(blk);
+
 #ifdef __linux__
     int i;
     struct sg_io_hdr hdr;
@@ -224,12 +228,12 @@ int virtio_blk_handle_scsi_req(VirtIOBlock *blk,
         hdr.status = CHECK_CONDITION;
     }
 
-    stl_p(&scsi->errors,
+    virtio_stl_p(vdev, &scsi->errors,
                  hdr.status | (hdr.msg_status << 8) |
                  (hdr.host_status << 16) | (hdr.driver_status << 24));
-    stl_p(&scsi->residual, hdr.resid);
+    virtio_stl_p(vdev, &scsi->residual, hdr.resid);
-    stl_p(&scsi->sense_len, hdr.sb_len_wr);
+    virtio_stl_p(vdev, &scsi->sense_len, hdr.sb_len_wr);
-    stl_p(&scsi->data_len, hdr.dxfer_len);
+    virtio_stl_p(vdev, &scsi->data_len, hdr.dxfer_len);
 
     return status;
 #else
@@ -239,7 +243,7 @@ int virtio_blk_handle_scsi_req(VirtIOBlock *blk,
 fail:
     /* Just put anything nonzero so that the ioctl fails in the guest.  */
     if (scsi) {
-        stl_p(&scsi->errors, 255);
+        virtio_stl_p(vdev, &scsi->errors, 255);
     }
     return status;
 }
@@ -289,7 +293,7 @@ static void virtio_blk_handle_write(VirtIOBlockReq *req, MultiReqBuffer *mrb)
     BlockRequest *blkreq;
     uint64_t sector;
 
-    sector = ldq_p(&req->out.sector);
+    sector = virtio_ldq_p(VIRTIO_DEVICE(req->dev), &req->out.sector);
 
     bdrv_acct_start(req->dev->bs, &req->acct, req->qiov.size, BDRV_ACCT_WRITE);
 
@@ -323,7 +327,7 @@ static void virtio_blk_handle_read(VirtIOBlockReq *req)
 {
     uint64_t sector;
 
-    sector = ldq_p(&req->out.sector);
+    sector = virtio_ldq_p(VIRTIO_DEVICE(req->dev), &req->out.sector);
 
     bdrv_acct_start(req->dev->bs, &req->acct, req->qiov.size, BDRV_ACCT_READ);
 
@@ -374,7 +378,7 @@ void virtio_blk_handle_request(VirtIOBlockReq *req, MultiReqBuffer *mrb)
               - sizeof(struct virtio_blk_inhdr);
     iov_discard_back(in_iov, &in_num, sizeof(struct virtio_blk_inhdr));
 
-    type = ldl_p(&req->out.type);
+    type = virtio_ldl_p(VIRTIO_DEVICE(req->dev), &req->out.type);
 
     if (type & VIRTIO_BLK_T_FLUSH) {
         virtio_blk_handle_flush(req, mrb);
@@ -504,12 +508,12 @@ static void virtio_blk_update_config(VirtIODevice *vdev, uint8_t *config)
 
     bdrv_get_geometry(s->bs, &capacity);
     memset(&blkcfg, 0, sizeof(blkcfg));
-    stq_p(&blkcfg.capacity, capacity);
+    virtio_stq_p(vdev, &blkcfg.capacity, capacity);
-    stl_p(&blkcfg.seg_max, 128 - 2);
+    virtio_stl_p(vdev, &blkcfg.seg_max, 128 - 2);
-    stw_p(&blkcfg.cylinders, s->conf->cyls);
+    virtio_stw_p(vdev, &blkcfg.cylinders, s->conf->cyls);
-    stl_p(&blkcfg.blk_size, blk_size);
+    virtio_stl_p(vdev, &blkcfg.blk_size, blk_size);
-    stw_p(&blkcfg.min_io_size, s->conf->min_io_size / blk_size);
+    virtio_stw_p(vdev, &blkcfg.min_io_size, s->conf->min_io_size / blk_size);
-    stw_p(&blkcfg.opt_io_size, s->conf->opt_io_size / blk_size);
+    virtio_stw_p(vdev, &blkcfg.opt_io_size, s->conf->opt_io_size / blk_size);
     blkcfg.heads = s->conf->heads;
     /*
      * We must ensure that the block device capacity is a multiple of
@@ -611,11 +615,15 @@ static void virtio_blk_set_status(VirtIODevice *vdev, uint8_t status)
 
 static void virtio_blk_save(QEMUFile *f, void *opaque)
 {
-    VirtIOBlock *s = opaque;
+    VirtIODevice *vdev = VIRTIO_DEVICE(opaque);
-    VirtIODevice *vdev = VIRTIO_DEVICE(s);
-    VirtIOBlockReq *req = s->rq;
 
     virtio_save(vdev, f);
+}
+    
+static void virtio_blk_save_device(VirtIODevice *vdev, QEMUFile *f)
+{
+    VirtIOBlock *s = VIRTIO_BLK(vdev);
+    VirtIOBlockReq *req = s->rq;
 
     while (req) {
         qemu_put_sbyte(f, 1);
@@ -630,16 +638,18 @@ static int virtio_blk_load(QEMUFile *f, void *opaque, int version_id)
 {
     VirtIOBlock *s = opaque;
     VirtIODevice *vdev = VIRTIO_DEVICE(s);
-    int ret;
 
     if (version_id != 2)
         return -EINVAL;
 
-    ret = virtio_load(vdev, f);
+    return virtio_load(vdev, f, version_id);
-    if (ret) {
-        return ret;
 }
 
+static int virtio_blk_load_device(VirtIODevice *vdev, QEMUFile *f,
+                                  int version_id)
+{
+    VirtIOBlock *s = VIRTIO_BLK(vdev);
+
     while (qemu_get_sbyte(f)) {
         VirtIOBlockReq *req = virtio_blk_alloc_request(s);
         qemu_get_buffer(f, (unsigned char *)req->elem,
@@ -799,6 +809,8 @@ static void virtio_blk_class_init(ObjectClass *klass, void *data)
     vdc->get_features = virtio_blk_get_features;
     vdc->set_status = virtio_blk_set_status;
     vdc->reset = virtio_blk_reset;
+    vdc->save = virtio_blk_save_device;
+    vdc->load = virtio_blk_load_device;
 }
 
 static const TypeInfo virtio_device_info = {

hw/char/virtio-serial-bus.c

@@ -24,6 +24,7 @@
 #include "hw/sysbus.h"
 #include "trace.h"
 #include "hw/virtio/virtio-serial.h"
+#include "hw/virtio/virtio-access.h"
 
 static VirtIOSerialPort *find_port_by_id(VirtIOSerial *vser, uint32_t id)
 {
@@ -183,11 +184,12 @@ static size_t send_control_msg(VirtIOSerial *vser, void *buf, size_t len)
 static size_t send_control_event(VirtIOSerial *vser, uint32_t port_id,
                                  uint16_t event, uint16_t value)
 {
+    VirtIODevice *vdev = VIRTIO_DEVICE(vser);
     struct virtio_console_control cpkt;
 
-    stl_p(&cpkt.id, port_id);
+    virtio_stl_p(vdev, &cpkt.id, port_id);
-    stw_p(&cpkt.event, event);
+    virtio_stw_p(vdev, &cpkt.event, event);
-    stw_p(&cpkt.value, value);
+    virtio_stw_p(vdev, &cpkt.value, value);
 
     trace_virtio_serial_send_control_event(port_id, event, value);
     return send_control_msg(vser, &cpkt, sizeof(cpkt));
@@ -278,6 +280,7 @@ void virtio_serial_throttle_port(VirtIOSerialPort *port, bool throttle)
 /* Guest wants to notify us of some event */
 static void handle_control_message(VirtIOSerial *vser, void *buf, size_t len)
 {
+    VirtIODevice *vdev = VIRTIO_DEVICE(vser);
     struct VirtIOSerialPort *port;
     VirtIOSerialPortClass *vsc;
     struct virtio_console_control cpkt, *gcpkt;
@@ -291,8 +294,8 @@ static void handle_control_message(VirtIOSerial *vser, void *buf, size_t len)
         return;
     }
 
-    cpkt.event = lduw_p(&gcpkt->event);
+    cpkt.event = virtio_lduw_p(vdev, &gcpkt->event);
-    cpkt.value = lduw_p(&gcpkt->value);
+    cpkt.value = virtio_lduw_p(vdev, &gcpkt->value);
 
     trace_virtio_serial_handle_control_message(cpkt.event, cpkt.value);
 
@@ -312,10 +315,10 @@ static void handle_control_message(VirtIOSerial *vser, void *buf, size_t len)
         return;
     }
 
-    port = find_port_by_id(vser, ldl_p(&gcpkt->id));
+    port = find_port_by_id(vser, virtio_ldl_p(vdev, &gcpkt->id));
     if (!port) {
         error_report("virtio-serial-bus: Unexpected port id %u for device %s",
-                     ldl_p(&gcpkt->id), vser->bus.qbus.name);
+                     virtio_ldl_p(vdev, &gcpkt->id), vser->bus.qbus.name);
         return;
     }
 
@@ -342,9 +345,9 @@ static void handle_control_message(VirtIOSerial *vser, void *buf, size_t len)
         }
 
         if (port->name) {
-            stl_p(&cpkt.id, port->id);
+            virtio_stl_p(vdev, &cpkt.id, port->id);
-            stw_p(&cpkt.event, VIRTIO_CONSOLE_PORT_NAME);
+            virtio_stw_p(vdev, &cpkt.event, VIRTIO_CONSOLE_PORT_NAME);
-            stw_p(&cpkt.value, 1);
+            virtio_stw_p(vdev, &cpkt.value, 1);
 
             buffer_len = sizeof(cpkt) + strlen(port->name) + 1;
             buffer = g_malloc(buffer_len);
@@ -510,18 +513,25 @@ static void vser_reset(VirtIODevice *vdev)
 
     vser = VIRTIO_SERIAL(vdev);
     guest_reset(vser);
+
+    /* In case we have switched endianness */
+    vser->config.max_nr_ports =
+        virtio_tswap32(vdev, vser->serial.max_virtserial_ports);
 }
 
 static void virtio_serial_save(QEMUFile *f, void *opaque)
 {
-    VirtIOSerial *s = VIRTIO_SERIAL(opaque);
+    /* The virtio device */
+    virtio_save(VIRTIO_DEVICE(opaque), f);
+}
+
+static void virtio_serial_save_device(VirtIODevice *vdev, QEMUFile *f)
+{
+    VirtIOSerial *s = VIRTIO_SERIAL(vdev);
     VirtIOSerialPort *port;
     uint32_t nr_active_ports;
     unsigned int i, max_nr_ports;
 
-    /* The virtio device */
-    virtio_save(VIRTIO_DEVICE(s), f);
-
     /* The config space */
     qemu_put_be16s(f, &s->config.cols);
     qemu_put_be16s(f, &s->config.rows);
@@ -529,7 +539,7 @@ static void virtio_serial_save(QEMUFile *f, void *opaque)
     qemu_put_be32s(f, &s->config.max_nr_ports);
 
     /* The ports map */
-    max_nr_ports = tswap32(s->config.max_nr_ports);
+    max_nr_ports = virtio_tswap32(vdev, s->config.max_nr_ports);
     for (i = 0; i < (max_nr_ports + 31) / 32; i++) {
         qemu_put_be32s(f, &s->ports_map[i]);
     }
@@ -659,36 +669,39 @@ static int fetch_active_ports_list(QEMUFile *f, int version_id,
 
 static int virtio_serial_load(QEMUFile *f, void *opaque, int version_id)
 {
-    VirtIOSerial *s = VIRTIO_SERIAL(opaque);
-    uint32_t max_nr_ports, nr_active_ports, ports_map;
-    unsigned int i;
-    int ret;
-
     if (version_id > 3) {
         return -EINVAL;
     }
 
     /* The virtio device */
-    ret = virtio_load(VIRTIO_DEVICE(s), f);
+    return virtio_load(VIRTIO_DEVICE(opaque), f, version_id);
-    if (ret) {
-        return ret;
 }
 
+static int virtio_serial_load_device(VirtIODevice *vdev, QEMUFile *f,
+                                     int version_id)
+{
+    VirtIOSerial *s = VIRTIO_SERIAL(vdev);
+    uint32_t max_nr_ports, nr_active_ports, ports_map;
+    unsigned int i;
+    int ret;
+    uint32_t tmp;
+
     if (version_id < 2) {
         return 0;
     }
 
-    /* The config space */
+    /* Unused */
-    qemu_get_be16s(f, &s->config.cols);
+    qemu_get_be16s(f, (uint16_t *) &tmp);
-    qemu_get_be16s(f, &s->config.rows);
+    qemu_get_be16s(f, (uint16_t *) &tmp);
-
+    qemu_get_be32s(f, &tmp);
-    qemu_get_be32s(f, &max_nr_ports);
-    tswap32s(&max_nr_ports);
-    if (max_nr_ports > tswap32(s->config.max_nr_ports)) {
-        /* Source could have had more ports than us. Fail migration. */
-        return -EINVAL;
-    }
 
+    /* Note: this is the only location where we use tswap32() instead of
+     * virtio_tswap32() because:
+     * - virtio_tswap32() only makes sense when the device is fully restored
+     * - the target endianness that was used to populate s->config is
+     *   necessarly the default one
+     */
+    max_nr_ports = tswap32(s->config.max_nr_ports);
     for (i = 0; i < (max_nr_ports + 31) / 32; i++) {
         qemu_get_be32s(f, &ports_map);
 
@@ -751,9 +764,10 @@ static void virtser_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent)
 /* This function is only used if a port id is not provided by the user */
 static uint32_t find_free_port_id(VirtIOSerial *vser)
 {
+    VirtIODevice *vdev = VIRTIO_DEVICE(vser);
     unsigned int i, max_nr_ports;
 
-    max_nr_ports = tswap32(vser->config.max_nr_ports);
+    max_nr_ports = virtio_tswap32(vdev, vser->config.max_nr_ports);
     for (i = 0; i < (max_nr_ports + 31) / 32; i++) {
         uint32_t map, bit;
 
@@ -806,6 +820,7 @@ static void virtser_port_device_realize(DeviceState *dev, Error **errp)
     VirtIOSerialPort *port = VIRTIO_SERIAL_PORT(dev);
     VirtIOSerialPortClass *vsc = VIRTIO_SERIAL_PORT_GET_CLASS(port);
     VirtIOSerialBus *bus = VIRTIO_SERIAL_BUS(qdev_get_parent_bus(dev));
+    VirtIODevice *vdev = VIRTIO_DEVICE(bus->vser);
     int max_nr_ports;
     bool plugging_port0;
     Error *err = NULL;
@@ -841,7 +856,7 @@ static void virtser_port_device_realize(DeviceState *dev, Error **errp)
         }
     }
 
-    max_nr_ports = tswap32(port->vser->config.max_nr_ports);
+    max_nr_ports = virtio_tswap32(vdev, port->vser->config.max_nr_ports);
     if (port->id >= max_nr_ports) {
         error_setg(errp, "virtio-serial-bus: Out-of-range port id specified, "
                          "max. allowed: %u", max_nr_ports - 1);
@@ -863,7 +878,7 @@ static void virtser_port_device_realize(DeviceState *dev, Error **errp)
     add_port(port->vser, port->id);
 
     /* Send an update to the guest about this new port added */
-    virtio_notify_config(VIRTIO_DEVICE(port->vser));
+    virtio_notify_config(vdev);
 }
 
 static void virtser_port_device_unrealize(DeviceState *dev, Error **errp)
@@ -942,7 +957,8 @@ static void virtio_serial_device_realize(DeviceState *dev, Error **errp)
         vser->ovqs[i] = virtio_add_queue(vdev, 128, handle_output);
     }
 
-    vser->config.max_nr_ports = tswap32(vser->serial.max_virtserial_ports);
+    vser->config.max_nr_ports =
+        virtio_tswap32(vdev, vser->serial.max_virtserial_ports);
     vser->ports_map = g_malloc0(((vser->serial.max_virtserial_ports + 31) / 32)
         * sizeof(vser->ports_map[0]));
     /*
@@ -1019,6 +1035,8 @@ static void virtio_serial_class_init(ObjectClass *klass, void *data)
     vdc->get_config = get_config;
     vdc->set_status = set_status;
     vdc->reset = vser_reset;
+    vdc->save = virtio_serial_save_device;
+    vdc->load = virtio_serial_load_device;
 }
 
 static const TypeInfo virtio_device_info = {

hw/i386/pc_piix.c

@@ -392,6 +392,11 @@ static void pc_init_pci_no_kvmclock(MachineState *machine)
     has_pci_info = false;
     has_acpi_build = false;
     smbios_defaults = false;
+    gigabyte_align = false;
+    smbios_legacy_mode = true;
+    has_reserved_memory = false;
+    option_rom_has_mr = true;
+    rom_file_has_mr = false;
     x86_cpu_compat_disable_kvm_features(FEAT_KVM, KVM_FEATURE_PV_EOI);
     enable_compat_apic_id_mode();
     pc_init1(machine, 1, 0);
@@ -402,6 +407,11 @@ static void pc_init_isa(MachineState *machine)
     has_pci_info = false;
     has_acpi_build = false;
     smbios_defaults = false;
+    gigabyte_align = false;
+    smbios_legacy_mode = true;
+    has_reserved_memory = false;
+    option_rom_has_mr = true;
+    rom_file_has_mr = false;
     if (!machine->cpu_model) {
         machine->cpu_model = "486";
     }

hw/i386/pc_q35.c

@@ -361,7 +361,7 @@ static QEMUMachine pc_q35_machine_v2_0 = {
     .name = "pc-q35-2.0",
     .init = pc_q35_init_2_0,
     .compat_props = (GlobalProperty[]) {
-        PC_Q35_COMPAT_2_0,
+        PC_COMPAT_2_0,
         { /* end of list */ }
     },
 };
@@ -373,7 +373,7 @@ static QEMUMachine pc_q35_machine_v1_7 = {
     .name = "pc-q35-1.7",
     .init = pc_q35_init_1_7,
     .compat_props = (GlobalProperty[]) {
-        PC_Q35_COMPAT_1_7,
+        PC_COMPAT_1_7,
         { /* end of list */ }
     },
 };
@@ -385,7 +385,7 @@ static QEMUMachine pc_q35_machine_v1_6 = {
     .name = "pc-q35-1.6",
     .init = pc_q35_init_1_6,
     .compat_props = (GlobalProperty[]) {
-        PC_Q35_COMPAT_1_6,
+        PC_COMPAT_1_6,
         { /* end of list */ }
     },
 };
@@ -395,7 +395,7 @@ static QEMUMachine pc_q35_machine_v1_5 = {
     .name = "pc-q35-1.5",
     .init = pc_q35_init_1_5,
     .compat_props = (GlobalProperty[]) {
-        PC_Q35_COMPAT_1_5,
+        PC_COMPAT_1_5,
         { /* end of list */ }
     },
 };
@@ -409,7 +409,7 @@ static QEMUMachine pc_q35_machine_v1_4 = {
     .name = "pc-q35-1.4",
     .init = pc_q35_init_1_4,
     .compat_props = (GlobalProperty[]) {
-        PC_Q35_COMPAT_1_4,
+        PC_COMPAT_1_4,
         { /* end of list */ }
     },
 };

hw/net/vhost_net.c

@@ -275,6 +275,19 @@ static void vhost_net_stop_one(struct vhost_net *net,
     vhost_dev_disable_notifiers(&net->dev, dev);
 }
 
+static bool vhost_net_device_endian_ok(VirtIODevice *vdev)
+{
+#ifdef TARGET_IS_BIENDIAN
+#ifdef HOST_WORDS_BIGENDIAN
+    return virtio_is_big_endian(vdev);
+#else
+    return !virtio_is_big_endian(vdev);
+#endif
+#else
+    return true;
+#endif
+}
+
 int vhost_net_start(VirtIODevice *dev, NetClientState *ncs,
                     int total_queues)
 {
@@ -283,6 +296,12 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs,
     VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(vbus);
     int r, i = 0;
 
+    if (!vhost_net_device_endian_ok(dev)) {
+        error_report("vhost-net does not support cross-endian");
+        r = -ENOSYS;
+        goto err;
+    }
+
     if (!k->set_guest_notifiers) {
         error_report("binding does not support guest notifiers");
         r = -ENOSYS;

hw/net/virtio-net.c

@@ -23,6 +23,7 @@
 #include "hw/virtio/virtio-bus.h"
 #include "qapi/qmp/qjson.h"
 #include "qapi-event.h"
+#include "hw/virtio/virtio-access.h"
 
 #define VIRTIO_NET_VM_VERSION    11
 
@@ -72,8 +73,8 @@ static void virtio_net_get_config(VirtIODevice *vdev, uint8_t *config)
     VirtIONet *n = VIRTIO_NET(vdev);
     struct virtio_net_config netcfg;
 
-    stw_p(&netcfg.status, n->status);
+    virtio_stw_p(vdev, &netcfg.status, n->status);
-    stw_p(&netcfg.max_virtqueue_pairs, n->max_queues);
+    virtio_stw_p(vdev, &netcfg.max_virtqueue_pairs, n->max_queues);
     memcpy(netcfg.mac, n->mac, ETH_ALEN);
     memcpy(config, &netcfg, n->config_size);
 }
@@ -604,6 +605,7 @@ static int virtio_net_handle_offloads(VirtIONet *n, uint8_t cmd,
 static int virtio_net_handle_mac(VirtIONet *n, uint8_t cmd,
                                  struct iovec *iov, unsigned int iov_cnt)
 {
+    VirtIODevice *vdev = VIRTIO_DEVICE(n);
     struct virtio_net_ctrl_mac mac_data;
     size_t s;
     NetClientState *nc = qemu_get_queue(n->nic);
@@ -632,7 +634,7 @@ static int virtio_net_handle_mac(VirtIONet *n, uint8_t cmd,
 
     s = iov_to_buf(iov, iov_cnt, 0, &mac_data.entries,
                    sizeof(mac_data.entries));
-    mac_data.entries = ldl_p(&mac_data.entries);
+    mac_data.entries = virtio_ldl_p(vdev, &mac_data.entries);
     if (s != sizeof(mac_data.entries)) {
         goto error;
     }
@@ -659,7 +661,7 @@ static int virtio_net_handle_mac(VirtIONet *n, uint8_t cmd,
 
     s = iov_to_buf(iov, iov_cnt, 0, &mac_data.entries,
                    sizeof(mac_data.entries));
-    mac_data.entries = ldl_p(&mac_data.entries);
+    mac_data.entries = virtio_ldl_p(vdev, &mac_data.entries);
     if (s != sizeof(mac_data.entries)) {
         goto error;
     }
@@ -699,12 +701,13 @@ error:
 static int virtio_net_handle_vlan_table(VirtIONet *n, uint8_t cmd,
                                         struct iovec *iov, unsigned int iov_cnt)
 {
+    VirtIODevice *vdev = VIRTIO_DEVICE(n);
     uint16_t vid;
     size_t s;
     NetClientState *nc = qemu_get_queue(n->nic);
 
     s = iov_to_buf(iov, iov_cnt, 0, &vid, sizeof(vid));
-    vid = lduw_p(&vid);
+    vid = virtio_lduw_p(vdev, &vid);
     if (s != sizeof(vid)) {
         return VIRTIO_NET_ERR;
     }
@@ -758,7 +761,7 @@ static int virtio_net_handle_mq(VirtIONet *n, uint8_t cmd,
         return VIRTIO_NET_ERR;
     }
 
-    queues = lduw_p(&mq.virtqueue_pairs);
+    queues = virtio_lduw_p(vdev, &mq.virtqueue_pairs);
 
     if (queues < VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN ||
         queues > VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX ||
@@ -875,6 +878,14 @@ static int virtio_net_has_buffers(VirtIONetQueue *q, int bufsize)
     return 1;
 }
 
+static void virtio_net_hdr_swap(VirtIODevice *vdev, struct virtio_net_hdr *hdr)
+{
+    virtio_tswap16s(vdev, &hdr->hdr_len);
+    virtio_tswap16s(vdev, &hdr->gso_size);
+    virtio_tswap16s(vdev, &hdr->csum_start);
+    virtio_tswap16s(vdev, &hdr->csum_offset);
+}
+
 /* dhclient uses AF_PACKET but doesn't pass auxdata to the kernel so
  * it never finds out that the packets don't have valid checksums.  This
  * causes dhclient to get upset.  Fedora's carried a patch for ages to
@@ -910,6 +921,7 @@ static void receive_header(VirtIONet *n, const struct iovec *iov, int iov_cnt,
         void *wbuf = (void *)buf;
         work_around_broken_dhclient(wbuf, wbuf + n->host_hdr_len,
                                     size - n->host_hdr_len);
+        virtio_net_hdr_swap(VIRTIO_DEVICE(n), wbuf);
         iov_from_buf(iov, iov_cnt, 0, buf, sizeof(struct virtio_net_hdr));
     } else {
         struct virtio_net_hdr hdr = {
@@ -1059,7 +1071,7 @@ static ssize_t virtio_net_receive(NetClientState *nc, const uint8_t *buf, size_t
     }
 
     if (mhdr_cnt) {
-        stw_p(&mhdr.num_buffers, i);
+        virtio_stw_p(vdev, &mhdr.num_buffers, i);
         iov_from_buf(mhdr_sg, mhdr_cnt,
                      0,
                      &mhdr.num_buffers, sizeof mhdr.num_buffers);
@@ -1118,6 +1130,14 @@ static int32_t virtio_net_flush_tx(VirtIONetQueue *q)
             exit(1);
         }
 
+        if (n->has_vnet_hdr) {
+            if (out_sg[0].iov_len < n->guest_hdr_len) {
+                error_report("virtio-net header incorrect");
+                exit(1);
+            }
+            virtio_net_hdr_swap(vdev, (void *) out_sg[0].iov_base);
+        }
+
         /*
          * If host wants to see the guest header as is, we can
          * pass it on unchanged. Otherwise, copy just the parts
@@ -1297,7 +1317,6 @@ static void virtio_net_set_multiqueue(VirtIONet *n, int multiqueue)
 
 static void virtio_net_save(QEMUFile *f, void *opaque)
 {
-    int i;
     VirtIONet *n = opaque;
     VirtIODevice *vdev = VIRTIO_DEVICE(n);
 
@@ -1305,6 +1324,12 @@ static void virtio_net_save(QEMUFile *f, void *opaque)
      * it might keep writing to memory. */
     assert(!n->vhost_started);
     virtio_save(vdev, f);
+}
+
+static void virtio_net_save_device(VirtIODevice *vdev, QEMUFile *f)
+{
+    VirtIONet *n = VIRTIO_NET(vdev);
+    int i;
 
     qemu_put_buffer(f, n->mac, ETH_ALEN);
     qemu_put_be32(f, n->vqs[0].tx_waiting);
@@ -1340,16 +1365,19 @@ static int virtio_net_load(QEMUFile *f, void *opaque, int version_id)
 {
     VirtIONet *n = opaque;
     VirtIODevice *vdev = VIRTIO_DEVICE(n);
-    int ret, i, link_down;
 
     if (version_id < 2 || version_id > VIRTIO_NET_VM_VERSION)
         return -EINVAL;
 
-    ret = virtio_load(vdev, f);
+    return virtio_load(vdev, f, version_id);
-    if (ret) {
-        return ret;
 }
 
+static int virtio_net_load_device(VirtIODevice *vdev, QEMUFile *f,
+                                  int version_id)
+{
+    VirtIONet *n = VIRTIO_NET(vdev);
+    int i, link_down;
+
     qemu_get_buffer(f, n->mac, ETH_ALEN);
     n->vqs[0].tx_waiting = qemu_get_be32(f);
 
@@ -1694,6 +1722,8 @@ static void virtio_net_class_init(ObjectClass *klass, void *data)
     vdc->set_status = virtio_net_set_status;
     vdc->guest_notifier_mask = virtio_net_guest_notifier_mask;
     vdc->guest_notifier_pending = virtio_net_guest_notifier_pending;
+    vdc->load = virtio_net_load_device;
+    vdc->save = virtio_net_save_device;
 }
 
 static const TypeInfo virtio_net_info = {

hw/scsi/virtio-scsi.c

@@ -19,6 +19,7 @@
 #include <hw/scsi/scsi.h>
 #include <block/scsi.h>
 #include <hw/virtio/virtio-bus.h>
+#include "hw/virtio/virtio-access.h"
 
 typedef struct VirtIOSCSIReq {
     VirtIOSCSI *dev;
@@ -235,7 +236,7 @@ static void virtio_scsi_do_tmf(VirtIOSCSI *s, VirtIOSCSIReq *req)
     /* Here VIRTIO_SCSI_S_OK means "FUNCTION COMPLETE".  */
     req->resp.tmf.response = VIRTIO_SCSI_S_OK;
 
-    tswap32s(&req->req.tmf.subtype);
+    virtio_tswap32s(VIRTIO_DEVICE(s), &req->req.tmf.subtype);
     switch (req->req.tmf.subtype) {
     case VIRTIO_SCSI_T_TMF_ABORT_TASK:
     case VIRTIO_SCSI_T_TMF_QUERY_TASK:
@@ -346,7 +347,7 @@ static void virtio_scsi_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
             continue;
         }
 
-        tswap32s(&req->req.tmf.type);
+        virtio_tswap32s(vdev, &req->req.tmf.type);
         if (req->req.tmf.type == VIRTIO_SCSI_T_TMF) {
             if (virtio_scsi_parse_req(req, sizeof(VirtIOSCSICtrlTMFReq),
                                       sizeof(VirtIOSCSICtrlTMFResp)) < 0) {
@@ -384,6 +385,7 @@ static void virtio_scsi_command_complete(SCSIRequest *r, uint32_t status,
     VirtIOSCSIReq *req = r->hba_private;
     uint8_t sense[SCSI_SENSE_BUF_SIZE];
     uint32_t sense_len;
+    VirtIODevice *vdev = VIRTIO_DEVICE(req->dev);
 
     if (r->io_canceled) {
         return;
@@ -392,14 +394,14 @@ static void virtio_scsi_command_complete(SCSIRequest *r, uint32_t status,
     req->resp.cmd.response = VIRTIO_SCSI_S_OK;
     req->resp.cmd.status = status;
     if (req->resp.cmd.status == GOOD) {
-        req->resp.cmd.resid = tswap32(resid);
+        req->resp.cmd.resid = virtio_tswap32(vdev, resid);
     } else {
         req->resp.cmd.resid = 0;
         sense_len = scsi_req_get_sense(r, sense, sizeof(sense));
         sense_len = MIN(sense_len, req->resp_iov.size - sizeof(req->resp.cmd));
         qemu_iovec_from_buf(&req->resp_iov, sizeof(req->resp.cmd),
                             &req->resp, sense_len);
-        req->resp.cmd.sense_len = tswap32(sense_len);
+        req->resp.cmd.sense_len = virtio_tswap32(vdev, sense_len);
     }
     virtio_scsi_complete_cmd_req(req);
 }
@@ -487,16 +489,16 @@ static void virtio_scsi_get_config(VirtIODevice *vdev,
     VirtIOSCSIConfig *scsiconf = (VirtIOSCSIConfig *)config;
     VirtIOSCSICommon *s = VIRTIO_SCSI_COMMON(vdev);
 
-    stl_p(&scsiconf->num_queues, s->conf.num_queues);
+    virtio_stl_p(vdev, &scsiconf->num_queues, s->conf.num_queues);
-    stl_p(&scsiconf->seg_max, 128 - 2);
+    virtio_stl_p(vdev, &scsiconf->seg_max, 128 - 2);
-    stl_p(&scsiconf->max_sectors, s->conf.max_sectors);
+    virtio_stl_p(vdev, &scsiconf->max_sectors, s->conf.max_sectors);
-    stl_p(&scsiconf->cmd_per_lun, s->conf.cmd_per_lun);
+    virtio_stl_p(vdev, &scsiconf->cmd_per_lun, s->conf.cmd_per_lun);
-    stl_p(&scsiconf->event_info_size, sizeof(VirtIOSCSIEvent));
+    virtio_stl_p(vdev, &scsiconf->event_info_size, sizeof(VirtIOSCSIEvent));
-    stl_p(&scsiconf->sense_size, s->sense_size);
+    virtio_stl_p(vdev, &scsiconf->sense_size, s->sense_size);
-    stl_p(&scsiconf->cdb_size, s->cdb_size);
+    virtio_stl_p(vdev, &scsiconf->cdb_size, s->cdb_size);
-    stw_p(&scsiconf->max_channel, VIRTIO_SCSI_MAX_CHANNEL);
+    virtio_stw_p(vdev, &scsiconf->max_channel, VIRTIO_SCSI_MAX_CHANNEL);
-    stw_p(&scsiconf->max_target, VIRTIO_SCSI_MAX_TARGET);
+    virtio_stw_p(vdev, &scsiconf->max_target, VIRTIO_SCSI_MAX_TARGET);
-    stl_p(&scsiconf->max_lun, VIRTIO_SCSI_MAX_LUN);
+    virtio_stl_p(vdev, &scsiconf->max_lun, VIRTIO_SCSI_MAX_LUN);
 }
 
 static void virtio_scsi_set_config(VirtIODevice *vdev,
@@ -505,14 +507,14 @@ static void virtio_scsi_set_config(VirtIODevice *vdev,
     VirtIOSCSIConfig *scsiconf = (VirtIOSCSIConfig *)config;
     VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev);
 
-    if ((uint32_t) ldl_p(&scsiconf->sense_size) >= 65536 ||
+    if ((uint32_t) virtio_ldl_p(vdev, &scsiconf->sense_size) >= 65536 ||
-        (uint32_t) ldl_p(&scsiconf->cdb_size) >= 256) {
+        (uint32_t) virtio_ldl_p(vdev, &scsiconf->cdb_size) >= 256) {
         error_report("bad data written to virtio-scsi configuration space");
         exit(1);
     }
 
-    vs->sense_size = ldl_p(&scsiconf->sense_size);
+    vs->sense_size = virtio_ldl_p(vdev, &scsiconf->sense_size);
-    vs->cdb_size = ldl_p(&scsiconf->cdb_size);
+    vs->cdb_size = virtio_ldl_p(vdev, &scsiconf->cdb_size);
 }
 
 static uint32_t virtio_scsi_get_features(VirtIODevice *vdev,
@@ -549,7 +551,7 @@ static int virtio_scsi_load(QEMUFile *f, void *opaque, int version_id)
     VirtIODevice *vdev = VIRTIO_DEVICE(opaque);
     int ret;
 
-    ret = virtio_load(vdev, f);
+    ret = virtio_load(vdev, f, version_id);
     if (ret) {
         return ret;
     }

hw/timer/mc146818rtc.c

@@ -27,6 +27,7 @@
 #include "hw/timer/mc146818rtc.h"
 #include "qapi/visitor.h"
 #include "qapi-event.h"
+#include "qmp-commands.h"
 
 #ifdef TARGET_I386
 #include "hw/i386/apic.h"
@@ -85,6 +86,7 @@ typedef struct RTCState {
     Notifier clock_reset_notifier;
     LostTickPolicy lost_tick_policy;
     Notifier suspend_notifier;
+    QLIST_ENTRY(RTCState) link;
 } RTCState;
 
 static void rtc_set_time(RTCState *s);
@@ -523,6 +525,20 @@ static void rtc_get_time(RTCState *s, struct tm *tm)
         rtc_from_bcd(s, s->cmos_data[RTC_CENTURY]) * 100 - 1900;
 }
 
+static QLIST_HEAD(, RTCState) rtc_devices =
+    QLIST_HEAD_INITIALIZER(rtc_devices);
+
+#ifdef TARGET_I386
+void qmp_rtc_reset_reinjection(Error **errp)
+{
+    RTCState *s;
+
+    QLIST_FOREACH(s, &rtc_devices, link) {
+        s->irq_coalesced = 0;
+    }
+}
+#endif
+
 static void rtc_set_time(RTCState *s)
 {
     struct tm tm;
@@ -911,6 +927,8 @@ ISADevice *rtc_init(ISABus *bus, int base_year, qemu_irq intercept_irq)
     } else {
         isa_init_irq(isadev, &s->irq, RTC_ISA_IRQ);
     }
+    QLIST_INSERT_HEAD(&rtc_devices, s, link);
+
     return isadev;
 }
 

hw/virtio/vhost-user.c

@@ -14,6 +14,7 @@
 #include "sysemu/kvm.h"
 #include "qemu/error-report.h"
 #include "qemu/sockets.h"
+#include "exec/ram_addr.h"
 
 #include <fcntl.h>
 #include <unistd.h>
@@ -47,6 +48,7 @@ typedef struct VhostUserMemoryRegion {
     uint64_t guest_phys_addr;
     uint64_t memory_size;
     uint64_t userspace_addr;
+    uint64_t mmap_offset;
 } VhostUserMemoryRegion;
 
 typedef struct VhostUserMemory {
@@ -183,10 +185,10 @@ static int vhost_user_call(struct vhost_dev *dev, unsigned long int request,
 {
     VhostUserMsg msg;
     VhostUserRequest msg_request;
-    RAMBlock *block = 0;
     struct vhost_vring_file *file = 0;
     int need_reply = 0;
     int fds[VHOST_MEMORY_MAX_NREGIONS];
+    int i, fd;
     size_t fd_num = 0;
 
     assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_USER);
@@ -212,14 +214,17 @@ static int vhost_user_call(struct vhost_dev *dev, unsigned long int request,
         break;
 
     case VHOST_SET_MEM_TABLE:
-        QTAILQ_FOREACH(block, &ram_list.blocks, next)
+        for (i = 0; i < dev->mem->nregions; ++i) {
-        {
+            struct vhost_memory_region *reg = dev->mem->regions + i;
-            if (block->fd > 0) {
+            fd = qemu_get_ram_fd(reg->guest_phys_addr);
-                msg.memory.regions[fd_num].userspace_addr =
+            if (fd > 0) {
-                    (uintptr_t) block->host;
+                msg.memory.regions[fd_num].userspace_addr = reg->userspace_addr;
-                msg.memory.regions[fd_num].memory_size = block->length;
+                msg.memory.regions[fd_num].memory_size  = reg->memory_size;
-                msg.memory.regions[fd_num].guest_phys_addr = block->offset;
+                msg.memory.regions[fd_num].guest_phys_addr = reg->guest_phys_addr;
-                fds[fd_num++] = block->fd;
+                msg.memory.regions[fd_num].mmap_offset = reg->userspace_addr -
+                    (uintptr_t) qemu_get_ram_block_host_ptr(reg->guest_phys_addr);
+                assert(fd_num < VHOST_MEMORY_MAX_NREGIONS);
+                fds[fd_num++] = fd;
             }
         }
 

hw/virtio/virtio-balloon.c

@@ -31,6 +31,7 @@
 #endif
 
 #include "hw/virtio/virtio-bus.h"
+#include "hw/virtio/virtio-access.h"
 
 static void balloon_page(void *addr, int deflate)
 {
@@ -206,8 +207,9 @@ static void virtio_balloon_handle_output(VirtIODevice *vdev, VirtQueue *vq)
         while (iov_to_buf(elem.out_sg, elem.out_num, offset, &pfn, 4) == 4) {
             ram_addr_t pa;
             ram_addr_t addr;
+            int p = virtio_ldl_p(vdev, &pfn);
 
-            pa = (ram_addr_t)ldl_p(&pfn) << VIRTIO_BALLOON_PFN_SHIFT;
+            pa = (ram_addr_t) p << VIRTIO_BALLOON_PFN_SHIFT;
             offset += 4;
 
             /* FIXME: remove get_system_memory(), but how? */
@@ -248,8 +250,8 @@ static void virtio_balloon_receive_stats(VirtIODevice *vdev, VirtQueue *vq)
 
     while (iov_to_buf(elem->out_sg, elem->out_num, offset, &stat, sizeof(stat))
            == sizeof(stat)) {
-        uint16_t tag = tswap16(stat.tag);
+        uint16_t tag = virtio_tswap16(vdev, stat.tag);
-        uint64_t val = tswap64(stat.val);
+        uint64_t val = virtio_tswap64(vdev, stat.val);
 
         offset += sizeof(stat);
         if (tag < VIRTIO_BALLOON_S_NR)
@@ -325,10 +327,12 @@ static void virtio_balloon_to_target(void *opaque, ram_addr_t target)
 
 static void virtio_balloon_save(QEMUFile *f, void *opaque)
 {
-    VirtIOBalloon *s = VIRTIO_BALLOON(opaque);
+    virtio_save(VIRTIO_DEVICE(opaque), f);
-    VirtIODevice *vdev = VIRTIO_DEVICE(s);
+}
 
-    virtio_save(vdev, f);
+static void virtio_balloon_save_device(VirtIODevice *vdev, QEMUFile *f)
+{
+    VirtIOBalloon *s = VIRTIO_BALLOON(vdev);
 
     qemu_put_be32(f, s->num_pages);
     qemu_put_be32(f, s->actual);
@@ -336,18 +340,17 @@ static void virtio_balloon_save(QEMUFile *f, void *opaque)
 
 static int virtio_balloon_load(QEMUFile *f, void *opaque, int version_id)
 {
-    VirtIOBalloon *s = VIRTIO_BALLOON(opaque);
-    VirtIODevice *vdev = VIRTIO_DEVICE(s);
-    int ret;
-
     if (version_id != 1)
         return -EINVAL;
 
-    ret = virtio_load(vdev, f);
+    return virtio_load(VIRTIO_DEVICE(opaque), f, version_id);
-    if (ret) {
-        return ret;
 }
 
+static int virtio_balloon_load_device(VirtIODevice *vdev, QEMUFile *f,
+                                      int version_id)
+{
+    VirtIOBalloon *s = VIRTIO_BALLOON(vdev);
+
     s->num_pages = qemu_get_be32(f);
     s->actual = qemu_get_be32(f);
     return 0;
@@ -416,6 +419,8 @@ static void virtio_balloon_class_init(ObjectClass *klass, void *data)
     vdc->get_config = virtio_balloon_get_config;
     vdc->set_config = virtio_balloon_set_config;
     vdc->get_features = virtio_balloon_get_features;
+    vdc->save = virtio_balloon_save_device;
+    vdc->load = virtio_balloon_load_device;
 }
 
 static const TypeInfo virtio_balloon_info = {

hw/virtio/virtio-pci.c

@@ -89,9 +89,6 @@
 /* Flags track per-device state like workarounds for quirks in older guests. */
 #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG  (1 << 0)
 
-/* HACK for virtio to determine if it's running a big endian guest */
-bool virtio_is_big_endian(void);
-
 static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
                                VirtIOPCIProxy *dev);
 
@@ -409,13 +406,13 @@ static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr,
         break;
     case 2:
         val = virtio_config_readw(vdev, addr);
-        if (virtio_is_big_endian()) {
+        if (virtio_is_big_endian(vdev)) {
             val = bswap16(val);
         }
         break;
     case 4:
         val = virtio_config_readl(vdev, addr);
-        if (virtio_is_big_endian()) {
+        if (virtio_is_big_endian(vdev)) {
             val = bswap32(val);
         }
         break;
@@ -443,13 +440,13 @@ static void virtio_pci_config_write(void *opaque, hwaddr addr,
         virtio_config_writeb(vdev, addr, val);
         break;
     case 2:
-        if (virtio_is_big_endian()) {
+        if (virtio_is_big_endian(vdev)) {
             val = bswap16(val);
         }
         virtio_config_writew(vdev, addr, val);
         break;
     case 4:
-        if (virtio_is_big_endian()) {
+        if (virtio_is_big_endian(vdev)) {
             val = bswap32(val);
         }
         virtio_config_writel(vdev, addr, val);

hw/virtio/virtio-rng.c

@@ -107,19 +107,20 @@ static void virtio_rng_save(QEMUFile *f, void *opaque)
 
 static int virtio_rng_load(QEMUFile *f, void *opaque, int version_id)
 {
-    VirtIORNG *vrng = opaque;
-    VirtIODevice *vdev = VIRTIO_DEVICE(vrng);
-
     if (version_id != 1) {
         return -EINVAL;
     }
-    virtio_load(vdev, f);
+    return virtio_load(VIRTIO_DEVICE(opaque), f, version_id);
+}
 
+static int virtio_rng_load_device(VirtIODevice *vdev, QEMUFile *f,
+                                  int version_id)
+{
     /* We may have an element ready but couldn't process it due to a quota
      * limit.  Make sure to try again after live migration when the quota may
      * have been reset.
      */
-    virtio_rng_process(vrng);
+    virtio_rng_process(VIRTIO_RNG(vdev));
 
     return 0;
 }
@@ -219,6 +220,7 @@ static void virtio_rng_class_init(ObjectClass *klass, void *data)
     vdc->realize = virtio_rng_device_realize;
     vdc->unrealize = virtio_rng_device_unrealize;
     vdc->get_features = get_features;
+    vdc->load = virtio_rng_load_device;
 }
 
 static void virtio_rng_initfn(Object *obj)

hw/virtio/virtio.c

@@ -19,6 +19,8 @@
 #include "hw/virtio/virtio.h"
 #include "qemu/atomic.h"
 #include "hw/virtio/virtio-bus.h"
+#include "migration/migration.h"
+#include "hw/virtio/virtio-access.h"
 
 /*
  * The alignment to use between consumer and producer parts of vring.
@@ -101,53 +103,56 @@ static void virtqueue_init(VirtQueue *vq)
                                  vq->vring.align);
 }
 
-static inline uint64_t vring_desc_addr(hwaddr desc_pa, int i)
+static inline uint64_t vring_desc_addr(VirtIODevice *vdev, hwaddr desc_pa,
+                                       int i)
 {
     hwaddr pa;
     pa = desc_pa + sizeof(VRingDesc) * i + offsetof(VRingDesc, addr);
-    return ldq_phys(&address_space_memory, pa);
+    return virtio_ldq_phys(vdev, pa);
 }
 
-static inline uint32_t vring_desc_len(hwaddr desc_pa, int i)
+static inline uint32_t vring_desc_len(VirtIODevice *vdev, hwaddr desc_pa, int i)
 {
     hwaddr pa;
     pa = desc_pa + sizeof(VRingDesc) * i + offsetof(VRingDesc, len);
-    return ldl_phys(&address_space_memory, pa);
+    return virtio_ldl_phys(vdev, pa);
 }
 
-static inline uint16_t vring_desc_flags(hwaddr desc_pa, int i)
+static inline uint16_t vring_desc_flags(VirtIODevice *vdev, hwaddr desc_pa,
+                                        int i)
 {
     hwaddr pa;
     pa = desc_pa + sizeof(VRingDesc) * i + offsetof(VRingDesc, flags);
-    return lduw_phys(&address_space_memory, pa);
+    return virtio_lduw_phys(vdev, pa);
 }
 
-static inline uint16_t vring_desc_next(hwaddr desc_pa, int i)
+static inline uint16_t vring_desc_next(VirtIODevice *vdev, hwaddr desc_pa,
+                                       int i)
 {
     hwaddr pa;
     pa = desc_pa + sizeof(VRingDesc) * i + offsetof(VRingDesc, next);
-    return lduw_phys(&address_space_memory, pa);
+    return virtio_lduw_phys(vdev, pa);
 }
 
 static inline uint16_t vring_avail_flags(VirtQueue *vq)
 {
     hwaddr pa;
     pa = vq->vring.avail + offsetof(VRingAvail, flags);
-    return lduw_phys(&address_space_memory, pa);
+    return virtio_lduw_phys(vq->vdev, pa);
 }
 
 static inline uint16_t vring_avail_idx(VirtQueue *vq)
 {
     hwaddr pa;
     pa = vq->vring.avail + offsetof(VRingAvail, idx);
-    return lduw_phys(&address_space_memory, pa);
+    return virtio_lduw_phys(vq->vdev, pa);
 }
 
 static inline uint16_t vring_avail_ring(VirtQueue *vq, int i)
 {
     hwaddr pa;
     pa = vq->vring.avail + offsetof(VRingAvail, ring[i]);
-    return lduw_phys(&address_space_memory, pa);
+    return virtio_lduw_phys(vq->vdev, pa);
 }
 
 static inline uint16_t vring_used_event(VirtQueue *vq)
@@ -159,44 +164,44 @@ static inline void vring_used_ring_id(VirtQueue *vq, int i, uint32_t val)
 {
     hwaddr pa;
     pa = vq->vring.used + offsetof(VRingUsed, ring[i].id);
-    stl_phys(&address_space_memory, pa, val);
+    virtio_stl_phys(vq->vdev, pa, val);
 }
 
 static inline void vring_used_ring_len(VirtQueue *vq, int i, uint32_t val)
 {
     hwaddr pa;
     pa = vq->vring.used + offsetof(VRingUsed, ring[i].len);
-    stl_phys(&address_space_memory, pa, val);
+    virtio_stl_phys(vq->vdev, pa, val);
 }
 
 static uint16_t vring_used_idx(VirtQueue *vq)
 {
     hwaddr pa;
     pa = vq->vring.used + offsetof(VRingUsed, idx);
-    return lduw_phys(&address_space_memory, pa);
+    return virtio_lduw_phys(vq->vdev, pa);
 }
 
 static inline void vring_used_idx_set(VirtQueue *vq, uint16_t val)
 {
     hwaddr pa;
     pa = vq->vring.used + offsetof(VRingUsed, idx);
-    stw_phys(&address_space_memory, pa, val);
+    virtio_stw_phys(vq->vdev, pa, val);
 }
 
 static inline void vring_used_flags_set_bit(VirtQueue *vq, int mask)
 {
+    VirtIODevice *vdev = vq->vdev;
     hwaddr pa;
     pa = vq->vring.used + offsetof(VRingUsed, flags);
-    stw_phys(&address_space_memory,
+    virtio_stw_phys(vdev, pa, virtio_lduw_phys(vdev, pa) | mask);
-             pa, lduw_phys(&address_space_memory, pa) | mask);
 }
 
 static inline void vring_used_flags_unset_bit(VirtQueue *vq, int mask)
 {
+    VirtIODevice *vdev = vq->vdev;
     hwaddr pa;
     pa = vq->vring.used + offsetof(VRingUsed, flags);
-    stw_phys(&address_space_memory,
+    virtio_stw_phys(vdev, pa, virtio_lduw_phys(vdev, pa) & ~mask);
-             pa, lduw_phys(&address_space_memory, pa) & ~mask);
 }
 
 static inline void vring_avail_event(VirtQueue *vq, uint16_t val)
@@ -206,7 +211,7 @@ static inline void vring_avail_event(VirtQueue *vq, uint16_t val)
         return;
     }
     pa = vq->vring.used + offsetof(VRingUsed, ring[vq->vring.num]);
-    stw_phys(&address_space_memory, pa, val);
+    virtio_stw_phys(vq->vdev, pa, val);
 }
 
 void virtio_queue_set_notification(VirtQueue *vq, int enable)
@@ -323,17 +328,18 @@ static unsigned int virtqueue_get_head(VirtQueue *vq, unsigned int idx)
     return head;
 }
 
-static unsigned virtqueue_next_desc(hwaddr desc_pa,
+static unsigned virtqueue_next_desc(VirtIODevice *vdev, hwaddr desc_pa,
                                     unsigned int i, unsigned int max)
 {
     unsigned int next;
 
     /* If this descriptor says it doesn't chain, we're done. */
-    if (!(vring_desc_flags(desc_pa, i) & VRING_DESC_F_NEXT))
+    if (!(vring_desc_flags(vdev, desc_pa, i) & VRING_DESC_F_NEXT)) {
         return max;
+    }
 
     /* Check they're not leading us off end of descriptors. */
-    next = vring_desc_next(desc_pa, i);
+    next = vring_desc_next(vdev, desc_pa, i);
     /* Make sure compiler knows to grab that: we don't want it changing! */
     smp_wmb();
 
@@ -356,6 +362,7 @@ void virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
 
     total_bufs = in_total = out_total = 0;
     while (virtqueue_num_heads(vq, idx)) {
+        VirtIODevice *vdev = vq->vdev;
         unsigned int max, num_bufs, indirect = 0;
         hwaddr desc_pa;
         int i;
@@ -365,8 +372,8 @@ void virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
         i = virtqueue_get_head(vq, idx++);
         desc_pa = vq->vring.desc;
 
-        if (vring_desc_flags(desc_pa, i) & VRING_DESC_F_INDIRECT) {
+        if (vring_desc_flags(vdev, desc_pa, i) & VRING_DESC_F_INDIRECT) {
-            if (vring_desc_len(desc_pa, i) % sizeof(VRingDesc)) {
+            if (vring_desc_len(vdev, desc_pa, i) % sizeof(VRingDesc)) {
                 error_report("Invalid size for indirect buffer table");
                 exit(1);
             }
@@ -379,8 +386,8 @@ void virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
 
             /* loop over the indirect descriptor table */
             indirect = 1;
-            max = vring_desc_len(desc_pa, i) / sizeof(VRingDesc);
+            max = vring_desc_len(vdev, desc_pa, i) / sizeof(VRingDesc);
-            desc_pa = vring_desc_addr(desc_pa, i);
+            desc_pa = vring_desc_addr(vdev, desc_pa, i);
             num_bufs = i = 0;
         }
 
@@ -391,15 +398,15 @@ void virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
                 exit(1);
             }
 
-            if (vring_desc_flags(desc_pa, i) & VRING_DESC_F_WRITE) {
+            if (vring_desc_flags(vdev, desc_pa, i) & VRING_DESC_F_WRITE) {
-                in_total += vring_desc_len(desc_pa, i);
+                in_total += vring_desc_len(vdev, desc_pa, i);
             } else {
-                out_total += vring_desc_len(desc_pa, i);
+                out_total += vring_desc_len(vdev, desc_pa, i);
             }
             if (in_total >= max_in_bytes && out_total >= max_out_bytes) {
                 goto done;
             }
-        } while ((i = virtqueue_next_desc(desc_pa, i, max)) != max);
+        } while ((i = virtqueue_next_desc(vdev, desc_pa, i, max)) != max);
 
         if (!indirect)
             total_bufs = num_bufs;
@@ -450,6 +457,7 @@ int virtqueue_pop(VirtQueue *vq, VirtQueueElement *elem)
 {
     unsigned int i, head, max;
     hwaddr desc_pa = vq->vring.desc;
+    VirtIODevice *vdev = vq->vdev;
 
     if (!virtqueue_num_heads(vq, vq->last_avail_idx))
         return 0;
@@ -460,19 +468,19 @@ int virtqueue_pop(VirtQueue *vq, VirtQueueElement *elem)
     max = vq->vring.num;
 
     i = head = virtqueue_get_head(vq, vq->last_avail_idx++);
-    if (vq->vdev->guest_features & (1 << VIRTIO_RING_F_EVENT_IDX)) {
+    if (vdev->guest_features & (1 << VIRTIO_RING_F_EVENT_IDX)) {
         vring_avail_event(vq, vring_avail_idx(vq));
     }
 
-    if (vring_desc_flags(desc_pa, i) & VRING_DESC_F_INDIRECT) {
+    if (vring_desc_flags(vdev, desc_pa, i) & VRING_DESC_F_INDIRECT) {
-        if (vring_desc_len(desc_pa, i) % sizeof(VRingDesc)) {
+        if (vring_desc_len(vdev, desc_pa, i) % sizeof(VRingDesc)) {
             error_report("Invalid size for indirect buffer table");
             exit(1);
         }
 
         /* loop over the indirect descriptor table */
-        max = vring_desc_len(desc_pa, i) / sizeof(VRingDesc);
+        max = vring_desc_len(vdev, desc_pa, i) / sizeof(VRingDesc);
-        desc_pa = vring_desc_addr(desc_pa, i);
+        desc_pa = vring_desc_addr(vdev, desc_pa, i);
         i = 0;
     }
 
@@ -480,30 +488,30 @@ int virtqueue_pop(VirtQueue *vq, VirtQueueElement *elem)
     do {
         struct iovec *sg;
 
-        if (vring_desc_flags(desc_pa, i) & VRING_DESC_F_WRITE) {
+        if (vring_desc_flags(vdev, desc_pa, i) & VRING_DESC_F_WRITE) {
             if (elem->in_num >= ARRAY_SIZE(elem->in_sg)) {
                 error_report("Too many write descriptors in indirect table");
                 exit(1);
             }
-            elem->in_addr[elem->in_num] = vring_desc_addr(desc_pa, i);
+            elem->in_addr[elem->in_num] = vring_desc_addr(vdev, desc_pa, i);
             sg = &elem->in_sg[elem->in_num++];
         } else {
             if (elem->out_num >= ARRAY_SIZE(elem->out_sg)) {
                 error_report("Too many read descriptors in indirect table");
                 exit(1);
             }
-            elem->out_addr[elem->out_num] = vring_desc_addr(desc_pa, i);
+            elem->out_addr[elem->out_num] = vring_desc_addr(vdev, desc_pa, i);
             sg = &elem->out_sg[elem->out_num++];
         }
 
-        sg->iov_len = vring_desc_len(desc_pa, i);
+        sg->iov_len = vring_desc_len(vdev, desc_pa, i);
 
         /* If we've got too many, that implies a descriptor loop. */
         if ((elem->in_num + elem->out_num) > max) {
             error_report("Looped descriptor");
             exit(1);
         }
-    } while ((i = virtqueue_next_desc(desc_pa, i, max)) != max);
+    } while ((i = virtqueue_next_desc(vdev, desc_pa, i, max)) != max);
 
     /* Now map what we have collected */
     virtqueue_map_sg(elem->in_sg, elem->in_addr, elem->in_num, 1);
@@ -544,6 +552,27 @@ void virtio_set_status(VirtIODevice *vdev, uint8_t val)
     vdev->status = val;
 }
 
+bool target_words_bigendian(void);
+static enum virtio_device_endian virtio_default_endian(void)
+{
+    if (target_words_bigendian()) {
+        return VIRTIO_DEVICE_ENDIAN_BIG;
+    } else {
+        return VIRTIO_DEVICE_ENDIAN_LITTLE;
+    }
+}
+
+static enum virtio_device_endian virtio_current_cpu_endian(void)
+{
+    CPUClass *cc = CPU_GET_CLASS(current_cpu);
+
+    if (cc->virtio_is_big_endian(current_cpu)) {
+        return VIRTIO_DEVICE_ENDIAN_BIG;
+    } else {
+        return VIRTIO_DEVICE_ENDIAN_LITTLE;
+    }
+}
+
 void virtio_reset(void *opaque)
 {
     VirtIODevice *vdev = opaque;
@@ -551,6 +580,13 @@ void virtio_reset(void *opaque)
     int i;
 
     virtio_set_status(vdev, 0);
+    if (current_cpu) {
+        /* Guest initiated reset */
+        vdev->device_endian = virtio_current_cpu_endian();
+    } else {
+        /* System reset */
+        vdev->device_endian = virtio_default_endian();
+    }
 
     if (k->reset) {
         k->reset(vdev);
@@ -839,10 +875,46 @@ void virtio_notify_config(VirtIODevice *vdev)
     virtio_notify_vector(vdev, vdev->config_vector);
 }
 
+static bool virtio_device_endian_needed(void *opaque)
+{
+    VirtIODevice *vdev = opaque;
+
+    assert(vdev->device_endian != VIRTIO_DEVICE_ENDIAN_UNKNOWN);
+    return vdev->device_endian != virtio_default_endian();
+}
+
+static const VMStateDescription vmstate_virtio_device_endian = {
+    .name = "virtio/device_endian",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT8(device_endian, VirtIODevice),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static const VMStateDescription vmstate_virtio = {
+    .name = "virtio",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .minimum_version_id_old = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_END_OF_LIST()
+    },
+    .subsections = (VMStateSubsection[]) {
+        {
+            .vmsd = &vmstate_virtio_device_endian,
+            .needed = &virtio_device_endian_needed
+        },
+        { 0 }
+    }
+};
+
 void virtio_save(VirtIODevice *vdev, QEMUFile *f)
 {
     BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));
     VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
+    VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
     int i;
 
     if (k->save_config) {
@@ -877,6 +949,13 @@ void virtio_save(VirtIODevice *vdev, QEMUFile *f)
             k->save_queue(qbus->parent, i, f);
         }
     }
+
+    if (vdc->save != NULL) {
+        vdc->save(vdev, f);
+    }
+
+    /* Subsections */
+    vmstate_save_state(f, &vmstate_virtio, vdev);
 }
 
 int virtio_set_features(VirtIODevice *vdev, uint32_t val)
@@ -895,7 +974,7 @@ int virtio_set_features(VirtIODevice *vdev, uint32_t val)
     return bad ? -1 : 0;
 }
 
-int virtio_load(VirtIODevice *vdev, QEMUFile *f)
+int virtio_load(VirtIODevice *vdev, QEMUFile *f, int version_id)
 {
     int i, ret;
     int32_t config_len;
@@ -904,6 +983,13 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f)
     uint32_t supported_features;
     BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));
     VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
+    VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
+
+    /*
+     * We poison the endianness to ensure it does not get used before
+     * subsections have been loaded.
+     */
+    vdev->device_endian = VIRTIO_DEVICE_ENDIAN_UNKNOWN;
 
     if (k->load_config) {
         ret = k->load_config(qbus->parent, f);
@@ -926,12 +1012,18 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f)
         return -1;
     }
     config_len = qemu_get_be32(f);
-    if (config_len != vdev->config_len) {
+
-        error_report("Unexpected config length 0x%x. Expected 0x%zx",
+    /*
-                     config_len, vdev->config_len);
+     * There are cases where the incoming config can be bigger or smaller
-        return -1;
+     * than what we have; so load what we have space for, and skip
+     * any excess that's in the stream.
+     */
+    qemu_get_buffer(f, vdev->config, MIN(config_len, vdev->config_len));
+
+    while (config_len > vdev->config_len) {
+        qemu_get_byte(f);
+        config_len--;
     }
-    qemu_get_buffer(f, vdev->config, vdev->config_len);
 
     num = qemu_get_be32(f);
 
@@ -951,18 +1043,7 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f)
         vdev->vq[i].notification = true;
 
         if (vdev->vq[i].pa) {
-            uint16_t nheads;
             virtqueue_init(&vdev->vq[i]);
-            nheads = vring_avail_idx(&vdev->vq[i]) - vdev->vq[i].last_avail_idx;
-            /* Check it isn't doing very strange things with descriptor numbers. */
-            if (nheads > vdev->vq[i].vring.num) {
-                error_report("VQ %d size 0x%x Guest index 0x%x "
-                             "inconsistent with Host index 0x%x: delta 0x%x",
-                             i, vdev->vq[i].vring.num,
-                             vring_avail_idx(&vdev->vq[i]),
-                             vdev->vq[i].last_avail_idx, nheads);
-                return -1;
-            }
         } else if (vdev->vq[i].last_avail_idx) {
             error_report("VQ %d address 0x0 "
                          "inconsistent with Host index 0x%x",
@@ -977,6 +1058,40 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f)
     }
 
     virtio_notify_vector(vdev, VIRTIO_NO_VECTOR);
+
+    if (vdc->load != NULL) {
+        ret = vdc->load(vdev, f, version_id);
+        if (ret) {
+            return ret;
+        }
+    }
+
+    /* Subsections */
+    ret = vmstate_load_state(f, &vmstate_virtio, vdev, 1);
+    if (ret) {
+        return ret;
+    }
+
+    if (vdev->device_endian == VIRTIO_DEVICE_ENDIAN_UNKNOWN) {
+        vdev->device_endian = virtio_default_endian();
+    }
+
+    for (i = 0; i < num; i++) {
+        if (vdev->vq[i].pa) {
+            uint16_t nheads;
+            nheads = vring_avail_idx(&vdev->vq[i]) - vdev->vq[i].last_avail_idx;
+            /* Check it isn't doing strange things with descriptor numbers. */
+            if (nheads > vdev->vq[i].vring.num) {
+                error_report("VQ %d size 0x%x Guest index 0x%x "
+                             "inconsistent with Host index 0x%x: delta 0x%x",
+                             i, vdev->vq[i].vring.num,
+                             vring_avail_idx(&vdev->vq[i]),
+                             vdev->vq[i].last_avail_idx, nheads);
+                return -1;
+            }
+        }
+    }
+
     return 0;
 }
 
@@ -1034,6 +1149,7 @@ void virtio_init(VirtIODevice *vdev, const char *name,
     }
     vdev->vmstate = qemu_add_vm_change_state_handler(virtio_vmstate_change,
                                                      vdev);
+    vdev->device_endian = virtio_default_endian();
 }
 
 hwaddr virtio_queue_get_desc_addr(VirtIODevice *vdev, int n)

include/exec/ram_addr.h

@@ -29,6 +29,7 @@ ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
                                    MemoryRegion *mr);
 ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr);
 int qemu_get_ram_fd(ram_addr_t addr);
+void *qemu_get_ram_block_host_ptr(ram_addr_t addr);
 void *qemu_get_ram_ptr(ram_addr_t addr);
 void qemu_ram_free(ram_addr_t addr);
 void qemu_ram_free_from_ptr(ram_addr_t addr);

include/hw/i386/pc.h

@@ -294,43 +294,6 @@ 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_Q35_COMPAT_2_0 \
-        PC_COMPAT_2_0, \
-        {\
-            .driver   = "ICH9-LPC",\
-            .property = "memory-hotplug-support",\
-            .value    = "off",\
-        },{\
-            .driver   = "xio3130-downstream",\
-            .property = COMPAT_PROP_PCP,\
-            .value    = "off",\
-        },{\
-            .driver   = "ioh3420",\
-            .property = COMPAT_PROP_PCP,\
-            .value    = "off",\
-        }
- 
-#define PC_Q35_COMPAT_1_7 \
-        PC_COMPAT_1_7, \
-        PC_Q35_COMPAT_2_0, \
-        {\
-            .driver   = "hpet",\
-            .property = HPET_INTCAP,\
-            .value    = stringify(4),\
-        }
-
-#define PC_Q35_COMPAT_1_6 \
-        PC_COMPAT_1_6, \
-        PC_Q35_COMPAT_1_7
-
-#define PC_Q35_COMPAT_1_5 \
-        PC_COMPAT_1_5, \
-        PC_Q35_COMPAT_1_6
-
-#define PC_Q35_COMPAT_1_4 \
-        PC_COMPAT_1_4, \
-        PC_Q35_COMPAT_1_5
-
 #define PC_COMPAT_2_0 \
         {\
             .driver   = "virtio-scsi-pci",\
@@ -358,7 +321,7 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
         },\
         {\
             .driver   = "pci-serial-2x",\
-            .property = "prof_if",\
+            .property = "prog_if",\
             .value    = stringify(0),\
         },\
         {\
@@ -370,6 +333,19 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
             .driver   = "virtio-net-pci",\
             .property = "guest_announce",\
             .value    = "off",\
+        },\
+        {\
+            .driver   = "ICH9-LPC",\
+            .property = "memory-hotplug-support",\
+            .value    = "off",\
+        },{\
+            .driver   = "xio3130-downstream",\
+            .property = COMPAT_PROP_PCP,\
+            .value    = "off",\
+        },{\
+            .driver   = "ioh3420",\
+            .property = COMPAT_PROP_PCP,\
+            .value    = "off",\
         }
 
 #define PC_COMPAT_1_7 \
@@ -383,6 +359,11 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
             .driver   = "PIIX4_PM",\
             .property = "acpi-pci-hotplug-with-bridge-support",\
             .value    = "off",\
+        },\
+        {\
+            .driver   = "hpet",\
+            .property = HPET_INTCAP,\
+            .value    = stringify(4),\
         }
 
 #define PC_COMPAT_1_6 \

include/hw/virtio/virtio-access.h

@@ -0,0 +1,170 @@
+/*
+ * Virtio Accessor Support: In case your target can change endian.
+ *
+ * Copyright IBM, Corp. 2013
+ *
+ * Authors:
+ *  Rusty Russell   <rusty@au.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+#ifndef _QEMU_VIRTIO_ACCESS_H
+#define _QEMU_VIRTIO_ACCESS_H
+#include "hw/virtio/virtio.h"
+#include "exec/address-spaces.h"
+
+static inline bool virtio_access_is_big_endian(VirtIODevice *vdev)
+{
+#if defined(TARGET_IS_BIENDIAN)
+    return virtio_is_big_endian(vdev);
+#elif defined(TARGET_WORDS_BIGENDIAN)
+    return true;
+#else
+    return false;
+#endif
+}
+
+static inline uint16_t virtio_lduw_phys(VirtIODevice *vdev, hwaddr pa)
+{
+    if (virtio_access_is_big_endian(vdev)) {
+        return lduw_be_phys(&address_space_memory, pa);
+    }
+    return lduw_le_phys(&address_space_memory, pa);
+}
+
+static inline uint32_t virtio_ldl_phys(VirtIODevice *vdev, hwaddr pa)
+{
+    if (virtio_access_is_big_endian(vdev)) {
+        return ldl_be_phys(&address_space_memory, pa);
+    }
+    return ldl_le_phys(&address_space_memory, pa);
+}
+
+static inline uint64_t virtio_ldq_phys(VirtIODevice *vdev, hwaddr pa)
+{
+    if (virtio_access_is_big_endian(vdev)) {
+        return ldq_be_phys(&address_space_memory, pa);
+    }
+    return ldq_le_phys(&address_space_memory, pa);
+}
+
+static inline void virtio_stw_phys(VirtIODevice *vdev, hwaddr pa,
+                                   uint16_t value)
+{
+    if (virtio_access_is_big_endian(vdev)) {
+        stw_be_phys(&address_space_memory, pa, value);
+    } else {
+        stw_le_phys(&address_space_memory, pa, value);
+    }
+}
+
+static inline void virtio_stl_phys(VirtIODevice *vdev, hwaddr pa,
+                                   uint32_t value)
+{
+    if (virtio_access_is_big_endian(vdev)) {
+        stl_be_phys(&address_space_memory, pa, value);
+    } else {
+        stl_le_phys(&address_space_memory, pa, value);
+    }
+}
+
+static inline void virtio_stw_p(VirtIODevice *vdev, void *ptr, uint16_t v)
+{
+    if (virtio_access_is_big_endian(vdev)) {
+        stw_be_p(ptr, v);
+    } else {
+        stw_le_p(ptr, v);
+    }
+}
+
+static inline void virtio_stl_p(VirtIODevice *vdev, void *ptr, uint32_t v)
+{
+    if (virtio_access_is_big_endian(vdev)) {
+        stl_be_p(ptr, v);
+    } else {
+        stl_le_p(ptr, v);
+    }
+}
+
+static inline void virtio_stq_p(VirtIODevice *vdev, void *ptr, uint64_t v)
+{
+    if (virtio_access_is_big_endian(vdev)) {
+        stq_be_p(ptr, v);
+    } else {
+        stq_le_p(ptr, v);
+    }
+}
+
+static inline int virtio_lduw_p(VirtIODevice *vdev, const void *ptr)
+{
+    if (virtio_access_is_big_endian(vdev)) {
+        return lduw_be_p(ptr);
+    } else {
+        return lduw_le_p(ptr);
+    }
+}
+
+static inline int virtio_ldl_p(VirtIODevice *vdev, const void *ptr)
+{
+    if (virtio_access_is_big_endian(vdev)) {
+        return ldl_be_p(ptr);
+    } else {
+        return ldl_le_p(ptr);
+    }
+}
+
+static inline uint64_t virtio_ldq_p(VirtIODevice *vdev, const void *ptr)
+{
+    if (virtio_access_is_big_endian(vdev)) {
+        return ldq_be_p(ptr);
+    } else {
+        return ldq_le_p(ptr);
+    }
+}
+
+static inline uint16_t virtio_tswap16(VirtIODevice *vdev, uint16_t s)
+{
+#ifdef HOST_WORDS_BIGENDIAN
+    return virtio_access_is_big_endian(vdev) ? s : bswap16(s);
+#else
+    return virtio_access_is_big_endian(vdev) ? bswap16(s) : s;
+#endif
+}
+
+static inline void virtio_tswap16s(VirtIODevice *vdev, uint16_t *s)
+{
+    *s = virtio_tswap16(vdev, *s);
+}
+
+static inline uint32_t virtio_tswap32(VirtIODevice *vdev, uint32_t s)
+{
+#ifdef HOST_WORDS_BIGENDIAN
+    return virtio_access_is_big_endian(vdev) ? s : bswap32(s);
+#else
+    return virtio_access_is_big_endian(vdev) ? bswap32(s) : s;
+#endif
+}
+
+static inline void virtio_tswap32s(VirtIODevice *vdev, uint32_t *s)
+{
+    *s = virtio_tswap32(vdev, *s);
+}
+
+static inline uint64_t virtio_tswap64(VirtIODevice *vdev, uint64_t s)
+{
+#ifdef HOST_WORDS_BIGENDIAN
+    return virtio_access_is_big_endian(vdev) ? s : bswap64(s);
+#else
+    return virtio_access_is_big_endian(vdev) ? bswap64(s) : s;
+#endif
+}
+
+static inline void virtio_tswap64s(VirtIODevice *vdev, uint64_t *s)
+{
+    *s = virtio_tswap64(vdev, *s);
+}
+#endif /* _QEMU_VIRTIO_ACCESS_H */

include/hw/virtio/virtio.h

@@ -104,6 +104,12 @@ typedef struct VirtQueueElement
 #define VIRTIO_DEVICE(obj) \
         OBJECT_CHECK(VirtIODevice, (obj), TYPE_VIRTIO_DEVICE)
 
+enum virtio_device_endian {
+    VIRTIO_DEVICE_ENDIAN_UNKNOWN,
+    VIRTIO_DEVICE_ENDIAN_LITTLE,
+    VIRTIO_DEVICE_ENDIAN_BIG,
+};
+
 struct VirtIODevice
 {
     DeviceState parent_obj;
@@ -121,6 +127,7 @@ struct VirtIODevice
     bool vm_running;
     VMChangeStateEntry *vmstate;
     char *bus_name;
+    uint8_t device_endian;
 };
 
 typedef struct VirtioDeviceClass {
@@ -150,6 +157,8 @@ typedef struct VirtioDeviceClass {
      * must mask in frontend instead.
      */
     void (*guest_notifier_mask)(VirtIODevice *vdev, int n, bool mask);
+    void (*save)(VirtIODevice *vdev, QEMUFile *f);
+    int (*load)(VirtIODevice *vdev, QEMUFile *f, int version_id);
 } VirtioDeviceClass;
 
 void virtio_init(VirtIODevice *vdev, const char *name,
@@ -184,7 +193,7 @@ void virtio_notify(VirtIODevice *vdev, VirtQueue *vq);
 
 void virtio_save(VirtIODevice *vdev, QEMUFile *f);
 
-int virtio_load(VirtIODevice *vdev, QEMUFile *f);
+int virtio_load(VirtIODevice *vdev, QEMUFile *f, int version_id);
 
 void virtio_notify_config(VirtIODevice *vdev);
 
@@ -253,4 +262,10 @@ void virtio_queue_set_host_notifier_fd_handler(VirtQueue *vq, bool assign,
                                                bool set_handler);
 void virtio_queue_notify_vq(VirtQueue *vq);
 void virtio_irq(VirtQueue *vq);
+
+static inline bool virtio_is_big_endian(VirtIODevice *vdev)
+{
+    assert(vdev->device_endian != VIRTIO_DEVICE_ENDIAN_UNKNOWN);
+    return vdev->device_endian == VIRTIO_DEVICE_ENDIAN_BIG;
+}
 #endif

include/qom/cpu.h

@@ -116,6 +116,7 @@ typedef struct CPUClass {
     CPUUnassignedAccess do_unassigned_access;
     void (*do_unaligned_access)(CPUState *cpu, vaddr addr,
                                 int is_write, int is_user, uintptr_t retaddr);
+    bool (*virtio_is_big_endian)(CPUState *cpu);
     int (*memory_rw_debug)(CPUState *cpu, vaddr addr,
                            uint8_t *buf, int len, bool is_write);
     void (*dump_state)(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,

include/sysemu/sysemu.h

@@ -146,11 +146,16 @@ extern int mem_prealloc;
  */
 #define MAX_CPUMASK_BITS 255
 
-extern int nb_numa_nodes;
+extern int nb_numa_nodes;   /* Number of NUMA nodes */
+extern int max_numa_nodeid; /* Highest specified NUMA node ID, plus one.
+                             * For all nodes, nodeid < max_numa_nodeid
+                             */
+
 typedef struct node_info {
     uint64_t node_mem;
     DECLARE_BITMAP(node_cpu, MAX_CPUMASK_BITS);
     struct HostMemoryBackend *node_memdev;
+    bool present;
 } NodeInfo;
 extern NodeInfo numa_info[MAX_NODES];
 void set_numa_nodes(void);

monitor.c

@@ -5441,3 +5441,10 @@ QemuOptsList qemu_mon_opts = {
         { /* end of list */ }
     },
 };
+
+#ifndef TARGET_I386
+void qmp_rtc_reset_reinjection(Error **errp)
+{
+    error_set(errp, QERR_FEATURE_DISABLED, "rtc-reset-reinjection");
+}
+#endif

numa.c

@@ -62,6 +62,11 @@ static void numa_node_parse(NumaNodeOptions *node, QemuOpts *opts, Error **errp)
         return;
     }
 
+    if (numa_info[nodenr].present) {
+        error_setg(errp, "Duplicate NUMA nodeid: %" PRIu16, nodenr);
+        return;
+    }
+
     for (cpus = node->cpus; cpus; cpus = cpus->next) {
         if (cpus->value > MAX_CPUMASK_BITS) {
             error_setg(errp, "CPU number %" PRIu16 " is bigger than %d",
@@ -106,6 +111,8 @@ static void numa_node_parse(NumaNodeOptions *node, QemuOpts *opts, Error **errp)
         numa_info[nodenr].node_mem = object_property_get_int(o, "size", NULL);
         numa_info[nodenr].node_memdev = MEMORY_BACKEND(o);
     }
+    numa_info[nodenr].present = true;
+    max_numa_nodeid = MAX(max_numa_nodeid, nodenr + 1);
 }
 
 int numa_init_func(QemuOpts *opts, void *opaque)
@@ -153,15 +160,30 @@ error:
 
 void set_numa_nodes(void)
 {
+    int i;
+
+    assert(max_numa_nodeid <= MAX_NODES);
+
+    /* No support for sparse NUMA node IDs yet: */
+    for (i = max_numa_nodeid - 1; i >= 0; i--) {
+        /* Report large node IDs first, to make mistakes easier to spot */
+        if (!numa_info[i].present) {
+            error_report("numa: Node ID missing: %d", i);
+            exit(1);
+        }
+    }
+
+    /* This must be always true if all nodes are present: */
+    assert(nb_numa_nodes == max_numa_nodeid);
+
     if (nb_numa_nodes > 0) {
         uint64_t numa_total;
-        int i;
 
         if (nb_numa_nodes > MAX_NODES) {
             nb_numa_nodes = MAX_NODES;
         }
 
-        /* If no memory size if given for any node, assume the default case
+        /* If no memory size is given for any node, assume the default case
          * and distribute the available memory equally across all nodes
          */
         for (i = 0; i < nb_numa_nodes; i++) {
@@ -172,7 +194,7 @@ void set_numa_nodes(void)
         if (i == nb_numa_nodes) {
             uint64_t usedmem = 0;
 
-            /* On Linux, the each node's border has to be 8MB aligned,
+            /* On Linux, each node's border has to be 8MB aligned,
              * the final node gets the rest.
              */
             for (i = 0; i < nb_numa_nodes - 1; i++) {

qapi-schema.json

@@ -3468,3 +3468,15 @@
 ##
 { 'enum': 'GuestPanicAction',
   'data': [ 'pause' ] }
+
+##
+# @rtc-reset-reinjection
+#
+# This command will reset the RTC interrupt reinjection backlog.
+# Can be used if another mechanism to synchronize guest time
+# is in effect, for example QEMU guest agent's guest-set-time
+# command.
+#
+# Since: 2.1
+##
+{ 'command': 'rtc-reset-reinjection' }

qmp-commands.hx

@@ -3675,3 +3675,26 @@ Example:
                  { "slot": "3", "slot-type": "DIMM", "source": 0, "status": 0}
    ]}
 EQMP
+
+#if defined TARGET_I386
+    {
+        .name       = "rtc-reset-reinjection",
+        .args_type  = "",
+        .mhandler.cmd_new = qmp_marshal_input_rtc_reset_reinjection,
+    },
+#endif
+
+SQMP
+rtc-reset-reinjection
+---------------------
+
+Reset the RTC interrupt reinjection backlog.
+
+Arguments: None.
+
+Example:
+
+-> { "execute": "rtc-reset-reinjection" }
+<- { "return": {} }
+
+EQMP

qom/cpu.c

@@ -196,6 +196,11 @@ static int cpu_common_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg)
     return 0;
 }
 
+bool target_words_bigendian(void);
+static bool cpu_common_virtio_is_big_endian(CPUState *cpu)
+{
+    return target_words_bigendian();
+}
 
 void cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
                     int flags)
@@ -334,6 +339,7 @@ static void cpu_class_init(ObjectClass *klass, void *data)
     k->write_elf64_note = cpu_common_write_elf64_note;
     k->gdb_read_register = cpu_common_gdb_read_register;
     k->gdb_write_register = cpu_common_gdb_write_register;
+    k->virtio_is_big_endian = cpu_common_virtio_is_big_endian;
     dc->realize = cpu_common_realizefn;
     /*
      * Reason: CPUs still need special care by board code: wiring up

target-openrisc/translate.c

@@ -531,7 +531,7 @@ static void dec_calc(DisasContext *dc, uint32_t insn)
                 TCGv_i64 high = tcg_temp_new_i64();
                 TCGv_i32 sr_ove = tcg_temp_local_new_i32();
                 int lab = gen_new_label();
-                /* Calculate the each result.  */
+                /* Calculate each result. */
                 tcg_gen_extu_i32_i64(tra, cpu_R[ra]);
                 tcg_gen_extu_i32_i64(trb, cpu_R[rb]);
                 tcg_gen_mul_i64(result, tra, trb);

target-ppc/cpu.h

@@ -29,6 +29,8 @@
 #define TARGET_LONG_BITS 64
 #define TARGET_PAGE_BITS 12
 
+#define TARGET_IS_BIENDIAN 1
+
 /* Note that the official physical address space bits is 62-M where M
    is implementation dependent.  I've not looked up M for the set of
    cpus we emulate at the system level.  */

target-ppc/translate_init.c

@@ -9597,6 +9597,18 @@ static void ppc_cpu_reset(CPUState *s)
     tlb_flush(s, 1);
 }
 
+#ifndef CONFIG_USER_ONLY
+static bool ppc_cpu_is_big_endian(CPUState *cs)
+{
+    PowerPCCPU *cpu = POWERPC_CPU(cs);
+    CPUPPCState *env = &cpu->env;
+
+    cpu_synchronize_state(cs);
+
+    return !msr_le;
+}
+#endif
+
 static void ppc_cpu_initfn(Object *obj)
 {
     CPUState *cs = CPU(obj);
@@ -9692,6 +9704,9 @@ static void ppc_cpu_class_init(ObjectClass *oc, void *data)
 #else
     cc->gdb_core_xml_file = "power-core.xml";
 #endif
+#ifndef CONFIG_USER_ONLY
+    cc->virtio_is_big_endian = ppc_cpu_is_big_endian;
+#endif
 
     dc->fw_name = "PowerPC,UNKNOWN";
 }

tests/test-string-output-visitor.c

@@ -21,12 +21,25 @@
 typedef struct TestOutputVisitorData {
     StringOutputVisitor *sov;
     Visitor *ov;
+    bool human;
 } TestOutputVisitorData;
 
 static void visitor_output_setup(TestOutputVisitorData *data,
                                  const void *unused)
 {
-    data->sov = string_output_visitor_new(false);
+    data->human = false;
+    data->sov = string_output_visitor_new(data->human);
+    g_assert(data->sov != NULL);
+
+    data->ov = string_output_get_visitor(data->sov);
+    g_assert(data->ov != NULL);
+}
+
+static void visitor_output_setup_human(TestOutputVisitorData *data,
+                                       const void *unused)
+{
+    data->human = true;
+    data->sov = string_output_visitor_new(data->human);
     g_assert(data->sov != NULL);
 
     data->ov = string_output_get_visitor(data->sov);
@@ -53,7 +66,11 @@ static void test_visitor_out_int(TestOutputVisitorData *data,
 
     str = string_output_get_string(data->sov);
     g_assert(str != NULL);
+    if (data->human) {
+        g_assert_cmpstr(str, ==, "42 (0x2a)");
+    } else {
         g_assert_cmpstr(str, ==, "42");
+    }
     g_free(str);
 }
 
@@ -78,8 +95,15 @@ static void test_visitor_out_intList(TestOutputVisitorData *data,
 
     str = string_output_get_string(data->sov);
     g_assert(str != NULL);
+    if (data->human) {
+        g_assert_cmpstr(str, ==,
+            "0-1,3-6,9-16,21-22,9223372036854775806-9223372036854775807 "
+            "(0x0-0x1,0x3-0x6,0x9-0x10,0x15-0x16,"
+            "0x7ffffffffffffffe-0x7fffffffffffffff)");
+    } else {
         g_assert_cmpstr(str, ==,
             "0-1,3-6,9-16,21-22,9223372036854775806-9223372036854775807");
+    }
     g_free(str);
     while (list) {
         intList *tmp2;
@@ -125,6 +149,7 @@ static void test_visitor_out_string(TestOutputVisitorData *data,
                                     const void *unused)
 {
     char *string = (char *) "Q E M U";
+    const char *string_human = "\"Q E M U\"";
     Error *err = NULL;
     char *str;
 
@@ -133,7 +158,11 @@ static void test_visitor_out_string(TestOutputVisitorData *data,
 
     str = string_output_get_string(data->sov);
     g_assert(str != NULL);
+    if (data->human) {
+        g_assert_cmpstr(str, ==, string_human);
+    } else {
         g_assert_cmpstr(str, ==, string);
+    }
     g_free(str);
 }
 
@@ -150,7 +179,11 @@ static void test_visitor_out_no_string(TestOutputVisitorData *data,
 
     str = string_output_get_string(data->sov);
     g_assert(str != NULL);
+    if (data->human) {
+        g_assert_cmpstr(str, ==, "<null>");
+    } else {
         g_assert_cmpstr(str, ==, "");
+    }
     g_free(str);
 }
 
@@ -162,12 +195,26 @@ static void test_visitor_out_enum(TestOutputVisitorData *data,
     EnumOne i;
 
     for (i = 0; i < ENUM_ONE_MAX; i++) {
+        char *str_human;
+        int len;
+
         visit_type_EnumOne(data->ov, &i, "unused", &err);
         g_assert(!err);
 
+        len = strlen(EnumOne_lookup[i]) + 2;
+        str_human = g_malloc0(len);
+        str_human[0] = '"';
+        strncpy(str_human + 1, EnumOne_lookup[i], strlen(EnumOne_lookup[i]));
+        str_human[len - 1] = '"';
+
         str = string_output_get_string(data->sov);
         g_assert(str != NULL);
+        if (data->human) {
+            g_assert_cmpstr(str, ==, str_human);
+        } else {
             g_assert_cmpstr(str, ==, EnumOne_lookup[i]);
+        }
+        g_free(str_human);
 	g_free(str);
     }
 }
@@ -186,11 +233,15 @@ static void test_visitor_out_enum_errors(TestOutputVisitorData *data,
     }
 }
 
-static void output_visitor_test_add(const char *testpath,
+static void
+output_visitor_test_add(const char *testpath,
                         TestOutputVisitorData *data,
-                                    void (*test_func)(TestOutputVisitorData *data, const void *user_data))
+                        void (*test_func)(TestOutputVisitorData *data,
+                                          const void *user_data),
+                        bool human)
 {
-    g_test_add(testpath, TestOutputVisitorData, data, visitor_output_setup,
+    g_test_add(testpath, TestOutputVisitorData, data,
+               human ? visitor_output_setup_human : visitor_output_setup,
                test_func, visitor_output_teardown);
 }
 
@@ -201,21 +252,41 @@ int main(int argc, char **argv)
     g_test_init(&argc, &argv, NULL);
 
     output_visitor_test_add("/string-visitor/output/int",
-                            &out_visitor_data, test_visitor_out_int);
+                            &out_visitor_data, test_visitor_out_int, false);
+    output_visitor_test_add("/string-visitor/output/int",
+                            &out_visitor_data, test_visitor_out_int, true);
     output_visitor_test_add("/string-visitor/output/bool",
-                            &out_visitor_data, test_visitor_out_bool);
+                            &out_visitor_data, test_visitor_out_bool, false);
+    output_visitor_test_add("/string-visitor/output/bool",
+                            &out_visitor_data, test_visitor_out_bool, true);
     output_visitor_test_add("/string-visitor/output/number",
-                            &out_visitor_data, test_visitor_out_number);
+                            &out_visitor_data, test_visitor_out_number, false);
+    output_visitor_test_add("/string-visitor/output/number",
+                            &out_visitor_data, test_visitor_out_number, true);
     output_visitor_test_add("/string-visitor/output/string",
-                            &out_visitor_data, test_visitor_out_string);
+                            &out_visitor_data, test_visitor_out_string, false);
+    output_visitor_test_add("/string-visitor/output/string",
+                            &out_visitor_data, test_visitor_out_string, true);
     output_visitor_test_add("/string-visitor/output/no-string",
-                            &out_visitor_data, test_visitor_out_no_string);
+                            &out_visitor_data, test_visitor_out_no_string,
+                            false);
+    output_visitor_test_add("/string-visitor/output/no-string",
+                            &out_visitor_data, test_visitor_out_no_string,
+                            true);
     output_visitor_test_add("/string-visitor/output/enum",
-                            &out_visitor_data, test_visitor_out_enum);
+                            &out_visitor_data, test_visitor_out_enum, false);
+    output_visitor_test_add("/string-visitor/output/enum",
+                            &out_visitor_data, test_visitor_out_enum, true);
     output_visitor_test_add("/string-visitor/output/enum-errors",
-                            &out_visitor_data, test_visitor_out_enum_errors);
+                            &out_visitor_data, test_visitor_out_enum_errors,
+                            false);
+    output_visitor_test_add("/string-visitor/output/enum-errors",
+                            &out_visitor_data, test_visitor_out_enum_errors,
+                            true);
     output_visitor_test_add("/string-visitor/output/intList",
-                            &out_visitor_data, test_visitor_out_intList);
+                            &out_visitor_data, test_visitor_out_intList, false);
+    output_visitor_test_add("/string-visitor/output/intList",
+                            &out_visitor_data, test_visitor_out_intList, true);
 
     g_test_run();
 

vl.c

@@ -196,6 +196,7 @@ static QTAILQ_HEAD(, FWBootEntry) fw_boot_order =
     QTAILQ_HEAD_INITIALIZER(fw_boot_order);
 
 int nb_numa_nodes;
+int max_numa_nodeid;
 NodeInfo numa_info[MAX_NODES];
 
 uint8_t qemu_uuid[16];
@@ -2984,10 +2985,12 @@ int main(int argc, char **argv, char **envp)
 
     for (i = 0; i < MAX_NODES; i++) {
         numa_info[i].node_mem = 0;
+        numa_info[i].present = false;
         bitmap_zero(numa_info[i].node_cpu, MAX_CPUMASK_BITS);
     }
 
     nb_numa_nodes = 0;
+    max_numa_nodeid = 0;
     nb_nics = 0;
 
     bdrv_init_with_whitelist();