search for: send_unused_pag

...+ /* Request header */ + struct virtio_balloon_req_hdr req_hdr; /* * The pages we've told the Host we're not using are enqueued * at vb_dev_info->pages list. @@ -568,6 +570,81 @@ static void stats_handle_request(struct virtio_balloon *vb) virtqueue_kick(vq); } +static void __send_unused_pages(struct virtio_balloon *vb, + unsigned long req_id, unsigned int pos, + bool done) +{ + struct virtio_balloon_resp_hdr *hdr = vb->resp_hdr; + struct virtqueue *vq = vb->host_req_vq; + + vb->resp_pos = pos; + hdr->cmd = BALLOON_GET_UNUSED_PAGES; + hdr->id = cpu_to_le16(req_id);...

...+ /* Request header */ + struct virtio_balloon_req_hdr req_hdr; /* * The pages we've told the Host we're not using are enqueued * at vb_dev_info->pages list. @@ -549,6 +551,80 @@ static void stats_handle_request(struct virtio_balloon *vb) virtqueue_kick(vq); } +static void __send_unused_pages(struct virtio_balloon *vb, + unsigned long req_id, unsigned int pos, bool done) +{ + struct virtio_balloon_resp_hdr *hdr = &vb->resp_hdr; + struct virtqueue *vq = vb->host_req_vq; + + vb->resp_pos = pos; + hdr->cmd = BALLOON_GET_UNUSED_PAGES; + hdr->id = req_id; + if (!done) +...

This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 2) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Please read each patch commit log for details. Changes: v7->v8: 1) Use only one chunk format, instead of two. 2) re-write the virtio-balloon implementation patch. 3) commit changes 4)

This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 2) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Please read each patch commit log for details. Changes: v7->v8: 1) Use only one chunk format, instead of two. 2) re-write the virtio-balloon implementation patch. 3) commit changes 4)

This patch set contains two parts of changes to the virtio-balloon. One is the change for speeding up the inflating & deflating process, the main idea of this optimization is to use {pfn|length} to present the page information instead of the PFNs, to reduce the overhead of virtio data transmission, address translation and madvise(). This can help to improve the performance by about 85%.

This patch set contains two parts of changes to the virtio-balloon. One is the change for speeding up the inflating & deflating process, the main idea of this optimization is to use {pfn|length} to present the page information instead of the PFNs, to reduce the overhead of virtio data transmission, address translation and madvise(). This can help to improve the performance by about 85%.

Take over this work from Liang. This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 1) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Please check patch 0003 for more details about optimization 1). For an idle guest with 8GB RAM, optimization 2) can help shorten the total live migration

Take over this work from Liang. This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 1) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Please check patch 0003 for more details about optimization 1). For an idle guest with 8GB RAM, optimization 2) can help shorten the total live migration