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...rivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -269,7 +269,7 @@ static inline int virtqueue_add(struct virtqueue *_vq, struct vring_virtqueue *vq = to_vvq(_vq); struct scatterlist *sg; struct vring_desc *desc; - unsigned int i, n, avail, descs_used, uninitialized_var(prev), err_idx; + unsigned int i, n, descs_used, uninitialized_var(prev), err_id; int head; bool indirect; @@ -387,10 +387,68 @@ static inline int virtqueue_add(struct virtqueue *_vq, else vq->free_head = i; - /* Store token and indirect buffer state. */ + END_USE(vq); + + return virtqueue_add_ch...

This patch series enhances the existing virtio-balloon with the following new features: 1) fast ballooning: transfer ballooned pages between the guest and host in chunks using sgs, instead of one by one; and 2) cmdq: a new virtqueue to send commands between the device and driver. Currently, it supports commands to report memory stats (replace the old statq mechanism) and report guest unused pages.

This patch series enhances the existing virtio-balloon with the following new features: 1) fast ballooning: transfer ballooned pages between the guest and host in chunks using sgs, instead of one by one; and 2) cmdq: a new virtqueue to send commands between the device and driver. Currently, it supports commands to report memory stats (replace the old statq mechanism) and report guest unused pages.