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This attempts to implement a "virtual I/O" layer which should allow common drivers to be efficiently used across most virtual I/O mechanisms. It will no-doubt need further enhancement. The details of probing the device are left to hypervisor-specific code: it simple constructs the "struct virtio_device" and hands it to the probe function (eg. virtnet_probe() or

This attempts to implement a "virtual I/O" layer which should allow common drivers to be efficiently used across most virtual I/O mechanisms. It will no-doubt need further enhancement. The details of probing the device are left to hypervisor-specific code: it simple constructs the "struct virtio_device" and hands it to the probe function (eg. virtnet_probe() or

This attempts to implement a "virtual I/O" layer which should allow common drivers to be efficiently used across most virtual I/O mechanisms. It will no-doubt need further enhancement. The details of probing the device are left to hypervisor-specific code: it simple constructs the "struct virtio_device" and hands it to the probe function (eg. virtnet_probe() or

...iver changes (+30 lines) 1) Convert to callbacks not interrupt. 2) Ensure both outbuf & inbuf have been used up before finishing request. This avoids potential remote access to freed memory. Net driver changes (+6 lines) 1) Convert to callbacks. 2) Store id in skb->cb, not array. 3) Remove NET_BUFS limit: we queue packets until virtio chokes. 4) Locking should now be correct, thanks mainly to virtio changes. BTW, the lguest implementations (very rough) are in the lguest patch repo for your viewing pleasure: Implementation over dumb read/write interface: http://lguest.ozlabs.org/patches/?fi...

...iver changes (+30 lines) 1) Convert to callbacks not interrupt. 2) Ensure both outbuf & inbuf have been used up before finishing request. This avoids potential remote access to freed memory. Net driver changes (+6 lines) 1) Convert to callbacks. 2) Store id in skb->cb, not array. 3) Remove NET_BUFS limit: we queue packets until virtio chokes. 4) Locking should now be correct, thanks mainly to virtio changes. BTW, the lguest implementations (very rough) are in the lguest patch repo for your viewing pleasure: Implementation over dumb read/write interface: http://lguest.ozlabs.org/patches/?fi...

...iver changes (+30 lines) 1) Convert to callbacks not interrupt. 2) Ensure both outbuf & inbuf have been used up before finishing request. This avoids potential remote access to freed memory. Net driver changes (+6 lines) 1) Convert to callbacks. 2) Store id in skb->cb, not array. 3) Remove NET_BUFS limit: we queue packets until virtio chokes. 4) Locking should now be correct, thanks mainly to virtio changes. BTW, the lguest implementations (very rough) are in the lguest patch repo for your viewing pleasure: Implementation over dumb read/write interface: http://lguest.ozlabs.org/patches/?fi...