Re: [PATCH 2/2 v1] virtio-scsi: set per-LUN queue limits for sg devices

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On Tue, Aug 21, 2012 at 9:23 AM, Cong Meng <mc@xxxxxxxxxxxxxxxxxx> wrote:
> @@ -557,6 +621,7 @@ static uint32_t virtio_scsi_get_features(VirtIODevice *vdev,
>  {
>      requested_features |= (1UL << VIRTIO_SCSI_F_HOTPLUG);
>      requested_features |= (1UL << VIRTIO_SCSI_F_CHANGE);
> +    requested_features |= (1UL << VIRTIO_SCSI_F_LUN_QUERY);

This should be a QEMU 1.3 and later feature bit.  VMs running with -m
pc-1.2 or earlier should not see it by default, this ensure the device
ABI is stable.  For more info, see:
http://patchwork.ozlabs.org/patch/177924/

Stefan
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