search for: balloon_page_chunk_hdr

...alloon { struct virtio_device *vdev; struct virtqueue *inflate_vq, *deflate_vq, *stats_vq; @@ -78,6 +86,32 @@ struct virtio_balloon { /* Synchronize access/update to this struct virtio_balloon elements */ struct mutex balloon_lock; + /* + * Buffer for PAGE_CHUNK_TYPE_BALLOON: + * virtio_balloon_page_chunk_hdr + + * virtio_balloon_page_chunk * MAX_PAGE_CHUNKS + */ + struct virtio_balloon_page_chunk_hdr *balloon_page_chunk_hdr; + struct virtio_balloon_page_chunk *balloon_page_chunk; + + /* Bitmap used to record pages */ + unsigned long *page_bmap[PAGE_BMAP_COUNT_MAX]; + /* Number of the allocated page_b...

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. Changes: v8->v9: 1) Split the two new features, VIRTIO_BALLOON_F_BALLOON_CHUNKS and VIRTIO_BALLOON_F_MISC_VQ, which were mixed together in the previous implementation; 2) Simpler

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. Changes: v8->v9: 1) Split the two new features, VIRTIO_BALLOON_F_BALLOON_CHUNKS and VIRTIO_BALLOON_F_MISC_VQ, which were mixed together in the previous implementation; 2) Simpler

...; - struct virtqueue *inflate_vq, *deflate_vq, *stats_vq; + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *miscq; /* The balloon servicing is delegated to a freezable workqueue. */ struct work_struct update_balloon_stats_work; @@ -94,6 +95,19 @@ struct virtio_balloon { struct virtio_balloon_page_chunk_hdr *balloon_page_chunk_hdr; struct virtio_balloon_page_chunk *balloon_page_chunk; + /* + * Buffer for PAGE_CHUNK_TYPE_UNUSED: + * virtio_balloon_miscq_hdr + + * virtio_balloon_page_chunk_hdr + + * virtio_balloon_page_chunk * MAX_PAGE_CHUNKS + */ + struct virtio_balloon_miscq_hdr *miscq_out_hd...

...gt; struct virtqueue *inflate_vq, *deflate_vq, *stats_vq; > @@ -78,6 +86,32 @@ struct virtio_balloon { > /* Synchronize access/update to this struct virtio_balloon elements */ > struct mutex balloon_lock; > > + /* > + * Buffer for PAGE_CHUNK_TYPE_BALLOON: > + * virtio_balloon_page_chunk_hdr + > + * virtio_balloon_page_chunk * MAX_PAGE_CHUNKS > + */ > + struct virtio_balloon_page_chunk_hdr *balloon_page_chunk_hdr; > + struct virtio_balloon_page_chunk *balloon_page_chunk; > + > + /* Bitmap used to record pages */ > + unsigned long *page_bmap[PAGE_BMAP_COUNT_MAX];...

...gt; struct virtqueue *inflate_vq, *deflate_vq, *stats_vq; > @@ -78,6 +86,32 @@ struct virtio_balloon { > /* Synchronize access/update to this struct virtio_balloon elements */ > struct mutex balloon_lock; > > + /* > + * Buffer for PAGE_CHUNK_TYPE_BALLOON: > + * virtio_balloon_page_chunk_hdr + > + * virtio_balloon_page_chunk * MAX_PAGE_CHUNKS > + */ > + struct virtio_balloon_page_chunk_hdr *balloon_page_chunk_hdr; > + struct virtio_balloon_page_chunk *balloon_page_chunk; > + > + /* Bitmap used to record pages */ > + unsigned long *page_bmap[PAGE_BMAP_COUNT_MAX];...

...vq, *deflate_vq, *stats_vq; > + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *miscq; > > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -94,6 +95,19 @@ struct virtio_balloon { > struct virtio_balloon_page_chunk_hdr *balloon_page_chunk_hdr; > struct virtio_balloon_page_chunk *balloon_page_chunk; > > + /* > + * Buffer for PAGE_CHUNK_TYPE_UNUSED: > + * virtio_balloon_miscq_hdr + > + * virtio_balloon_page_chunk_hdr + > + * virtio_balloon_page_chunk * MAX_PAGE_CHUNKS > + */ > +...

...vq, *deflate_vq, *stats_vq; > + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *miscq; > > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -94,6 +95,19 @@ struct virtio_balloon { > struct virtio_balloon_page_chunk_hdr *balloon_page_chunk_hdr; > struct virtio_balloon_page_chunk *balloon_page_chunk; > > + /* > + * Buffer for PAGE_CHUNK_TYPE_UNUSED: > + * virtio_balloon_miscq_hdr + > + * virtio_balloon_page_chunk_hdr + > + * virtio_balloon_page_chunk * MAX_PAGE_CHUNKS > + */ > +...

...s of page to chunk are treated differently. Different types of page > chunks are sent to the host via different protocols. > > 1) PAGE_CHUNK_TYPE_BALLOON: Ballooned (i.e. inflated/deflated) pages > to chunk. For the ballooned type, it uses the basic chunk msg format: > > virtio_balloon_page_chunk_hdr + > virtio_balloon_page_chunk * MAX_PAGE_CHUNKS > > 2) PAGE_CHUNK_TYPE_UNUSED: unused pages to chunk. It uses this miscq msg > format: > miscq_hdr + > virtio_balloon_page_chunk_hdr + > virtio_balloon_page_chunk * MAX_PAGE_CHUNKS > > The chunk msg is actually the payload...

...s of page to chunk are treated differently. Different types of page > chunks are sent to the host via different protocols. > > 1) PAGE_CHUNK_TYPE_BALLOON: Ballooned (i.e. inflated/deflated) pages > to chunk. For the ballooned type, it uses the basic chunk msg format: > > virtio_balloon_page_chunk_hdr + > virtio_balloon_page_chunk * MAX_PAGE_CHUNKS > > 2) PAGE_CHUNK_TYPE_UNUSED: unused pages to chunk. It uses this miscq msg > format: > miscq_hdr + > virtio_balloon_page_chunk_hdr + > virtio_balloon_page_chunk * MAX_PAGE_CHUNKS > > The chunk msg is actually the payload...

...treated differently. Different types of page >> chunks are sent to the host via different protocols. >> >> 1) PAGE_CHUNK_TYPE_BALLOON: Ballooned (i.e. inflated/deflated) pages >> to chunk. For the ballooned type, it uses the basic chunk msg format: >> >> virtio_balloon_page_chunk_hdr + >> virtio_balloon_page_chunk * MAX_PAGE_CHUNKS >> >> 2) PAGE_CHUNK_TYPE_UNUSED: unused pages to chunk. It uses this miscq msg >> format: >> miscq_hdr + >> virtio_balloon_page_chunk_hdr + >> virtio_balloon_page_chunk * MAX_PAGE_CHUNKS >> >> The...

...t types of > >> page chunks are sent to the host via different protocols. > >> > >> 1) PAGE_CHUNK_TYPE_BALLOON: Ballooned (i.e. inflated/deflated) pages > >> to chunk. For the ballooned type, it uses the basic chunk msg format: > >> > >> virtio_balloon_page_chunk_hdr + > >> virtio_balloon_page_chunk * MAX_PAGE_CHUNKS > >> > >> 2) PAGE_CHUNK_TYPE_UNUSED: unused pages to chunk. It uses this miscq > >> msg > >> format: > >> miscq_hdr + > >> virtio_balloon_page_chunk_hdr + > >> virtio_balloon_p...

...t types of > >> page chunks are sent to the host via different protocols. > >> > >> 1) PAGE_CHUNK_TYPE_BALLOON: Ballooned (i.e. inflated/deflated) pages > >> to chunk. For the ballooned type, it uses the basic chunk msg format: > >> > >> virtio_balloon_page_chunk_hdr + > >> virtio_balloon_page_chunk * MAX_PAGE_CHUNKS > >> > >> 2) PAGE_CHUNK_TYPE_UNUSED: unused pages to chunk. It uses this miscq > >> msg > >> format: > >> miscq_hdr + > >> virtio_balloon_page_chunk_hdr + > >> virtio_balloon_p...

...added in another patch. Types of page to chunk are treated differently. Different types of page chunks are sent to the host via different protocols. 1) PAGE_CHUNK_TYPE_BALLOON: Ballooned (i.e. inflated/deflated) pages to chunk. For the ballooned type, it uses the basic chunk msg format: virtio_balloon_page_chunk_hdr + virtio_balloon_page_chunk * MAX_PAGE_CHUNKS 2) PAGE_CHUNK_TYPE_UNUSED: unused pages to chunk. It uses this miscq msg format: miscq_hdr + virtio_balloon_page_chunk_hdr + virtio_balloon_page_chunk * MAX_PAGE_CHUNKS The chunk msg is actually the payload of the miscq msg. >> +#define MAX_P...