Re: [Qemu-devel] [TestDays] s390x emulation error

[Andreas Färber]

Am 09.11.2011 23:53, schrieb Andreas Färber:
> I get the following error:
> 
> $ s390x-softmmu/qemu-system-s390x
> qemu-system-s390x: Guest moved used index from 0 to 47802

This is coming from hw/virtio.c:

static int virtqueue_num_heads(VirtQueue *vq, unsigned int idx)
{
    uint16_t num_heads = vring_avail_idx(vq) - idx;

    /* Check it isn't doing very strange things with descriptor numbers. */
    if (num_heads > vq->vring.num) {
        error_report("Guest moved used index from %u to %u",
                     idx, vring_avail_idx(vq));
        exit(1);
    }

    return num_heads;
}

Any idea? Couldn't find a related s390-specific patch on the list.

Andreas

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