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Hi, I’m currently trying to make vhost-net work on arndale board. For this I’m using latest irqfd patches from Eric Auger. So far I can properly generate irqs to the guest using vgic and irq-routing , but as far as I can see virtio registers (interrupt status register @ offset 0x60) are not update by vhost. Does it mean that virtio virtual registers have to be managed by Qemu, even when using a vhost kernel back-end ??? I cannot find inside vhost code where those registers could be updated, and I can clearly see any mmio accesses from guest to those registers causing a qemu virtio_mmio_read or virtio_mmio-write… I thought vhost was added to prevent any qemu interaction in the data path … Could someone more familiar with vhost could tell me if and where I‘m wrong ? Thanks a lot in advance Regards Rémy |
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