I am trying to achieve a host->guest comm channel. so far, I have written a device in the launcher which simply registers one IN vq and a handler function for the interrupt. I have a virtio driver, which on initialization (probe), kmallocs a buffer, calls sg_init_one, places the buffer via virtqueue_add_buf and then kicks the vq.
on the host side (launcher), my handler is called, and I can see the data I had filled in on the guest side, however, when I try to set data into the buffers by changing the iov[0].base to the addr of data in the host and try a trigger_irq, my guest gets notified, but I don't see the updated data. -Earlence
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