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| author | Christoph Hellwig <hch@lst.de> | 2011-01-24 13:32:51 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2011-01-31 10:03:00 +0100 |
| commit | e5051fc70807750f7a4798d2d83e159793c466d3 (patch) | |
| tree | 456a6b31f2d267a71f175a33618db5360682d53f /hw | |
| parent | db97ee6a976bacbb0d18818e951cfc41b39269a7 (diff) | |
| download | qemu-e5051fc70807750f7a4798d2d83e159793c466d3.zip qemu-e5051fc70807750f7a4798d2d83e159793c466d3.tar.gz qemu-e5051fc70807750f7a4798d2d83e159793c466d3.tar.bz2 | |
virtio-blk: tell the guest about size changes
Raise a config change interrupt when the size changed. This allows
virtio-blk guest drivers to read-read the information from the
config space once it got the config chaged interrupt.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/virtio-blk.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c index 9f2a9c0..ffac5a4 100644 --- a/hw/virtio-blk.c +++ b/hw/virtio-blk.c @@ -514,6 +514,15 @@ static int virtio_blk_load(QEMUFile *f, void *opaque, int version_id) return 0; } +static void virtio_blk_change_cb(void *opaque, int reason) +{ + VirtIOBlock *s = opaque; + + if (reason & CHANGE_SIZE) { + virtio_notify_config(&s->vdev); + } +} + VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf) { VirtIOBlock *s; @@ -556,6 +565,7 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf) register_savevm(dev, "virtio-blk", virtio_blk_id++, 2, virtio_blk_save, virtio_blk_load, s); bdrv_set_removable(s->bs, 0); + bdrv_set_change_cb(s->bs, virtio_blk_change_cb, s); s->bs->buffer_alignment = conf->logical_block_size; add_boot_device_path(conf->bootindex, dev, "/disk@0,0"); |