Re: [Qemu-devel] [vhost] virtio (guest) interrupt kernel modules

[Catalin Vasile]

It seems that the problem is from the code itself.
If I call vhost_dev_start() in set_status() (in qemu), when the status
changes to VIRTIO_CONFIG_S_DRIVER_OK, only the communication path from
guest to vhost works.

In another scenario I send a message from guest to qemu, and the vq
handler in qemu calls vhost_dev_start(). From here right on the
communication works both ways between guest and vhost (I can also
receive signals from vhost to guest).

I used the first scenario because I took vhost-scsi as an example. The
thing is I don't understand what I'm doing different.

On Thu, Jun 11, 2015 at 5:26 PM, Catalin Vasile
<address@hidden> wrote:
> Is there something I need to install (kernel module or something like
> that) so that the virtio guest receives signals from vhost?
> The communication from and to qemu works (I can send a message from
> guest to qemu, and I can send a message from qemu to guest), and I can
> send a message from guest to vhost, but I don't get any signals when I
> call vhost_add_used_and_signal()).