search for: virtio_balloon_req_hdr

...delegated to a freezable workqueue. */ struct work_struct update_balloon_stats_work; @@ -104,6 +104,8 @@ struct virtio_balloon { * pfn_start & pfn_stop: records the start and stop pfn in each cover */ unsigned long pfn_min, pfn_max, pfn_start, pfn_stop; + /* 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, + unsi...

...icing is delegated to a freezable workqueue. */ struct work_struct update_balloon_stats_work; @@ -83,6 +83,8 @@ struct virtio_balloon { unsigned int nr_page_bmap; /* Used to record the processed pfn range */ unsigned long min_pfn, max_pfn, start_pfn, end_pfn; + /* 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. @@ -552,6 +554,63 @@ static void update_balloon_stats(struct virtio_balloon *vb) pages_to_bytes(available)); } +static void send_unused_pages_info(struct virtio_balloon...

...a. */ unsigned long resp_pos; /* Bitmap and bitmap count used to tell the host the pages */ @@ -83,6 +85,8 @@ struct virtio_balloon { unsigned int nr_page_bmap; /* Used to record the processed pfn range */ unsigned long min_pfn, max_pfn, start_pfn, end_pfn; + /* 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. @@ -551,6 +555,58 @@ static void update_balloon_stats(struct virtio_balloon *vb) pages_to_bytes(available)); } +static void send_unused_pages_info(struct virtio_balloon...

...icing is delegated to a freezable workqueue. */ struct work_struct update_balloon_stats_work; @@ -95,6 +95,8 @@ struct virtio_balloon { unsigned int nr_page_bmap; /* Used to record the processed pfn range */ unsigned long min_pfn, max_pfn, start_pfn, end_pfn; + /* 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, + unsigne...

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)

...data_len; /* Payload len in bytes */ }; +enum virtio_balloon_req_id { + /* Get unused page information */ + BALLOON_GET_UNUSED_PAGES, +}; + +enum virtio_balloon_flag { + /* Have more data for a request */ + BALLOON_FLAG_CONT, + /* No more data for a request */ + BALLOON_FLAG_DONE, +}; + +struct virtio_balloon_req_hdr { + /* Used to distinguish different requests */ + __le16 cmd; + /* Reserved */ + __le16 reserved[3]; + /* Request parameter */ + __le64 param; +}; + #endif /* _LINUX_VIRTIO_BALLOON_H */ -- 2.7.4

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 bitmap to send the page information to host 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 bitmap to send the page information to host 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 bitmap to send the page information to host 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 bitmap to send the page information to host 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

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%.