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virtio-blk: add VirtIOBlockConf->num_queues

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The num_queues field is always 1 for the time being.  A later patch will
make it a configurable device property so that multiqueue can be
enabled.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1466511196-12612-2-git-send-email-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2016-06-21 13:13:10 +01:00
parent 5fa78b2a1c
commit 84419863f7
2 changed files with 2 additions and 0 deletions
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1
hw/block/virtio-blk.c
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@ -883,6 +883,7 @@ static void virtio_blk_device_realize(DeviceState *dev, Error **errp)
s->rq = NULL;
s->sector_mask = (s->conf.conf.logical_block_size / BDRV_SECTOR_SIZE) - 1;
conf->num_queues = 1;
s->vq = virtio_add_queue(vdev, 128, virtio_blk_handle_output);
virtio_blk_data_plane_create(vdev, conf, &s->dataplane, &err);
if (err != NULL) {

1
include/hw/virtio/virtio-blk.h
View File

@ -38,6 +38,7 @@ struct VirtIOBlkConf
uint32_t scsi;
uint32_t config_wce;
uint32_t request_merging;
uint16_t num_queues;
};
struct VirtIOBlockDataPlane;