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virtio-scsi: introduce a constant for fixed virtqueues

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The event and control virtqueues are always present, regardless of the
multi-queue configuration.  Define a constant so that virtqueue number
calculations are easier to read.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Message-Id: <20200818143348.310613-5-stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2020-08-18 15:33:45 +01:00 • committed by Michael S. Tsirkin
parent 1436f32a84
commit 4e5163bd84
6 changed files with 14 additions and 7 deletions
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3
hw/virtio/vhost-user-scsi-pci.c
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@ -56,7 +56,8 @@ static void vhost_user_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev);
if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
vpci_dev->nvectors = vs->conf.num_queues + 3;
vpci_dev->nvectors = vs->conf.num_queues +
VIRTIO_SCSI_VQ_NUM_FIXED + 1;
}
qdev_realize(vdev, BUS(&vpci_dev->bus), errp);