search for: pfn_stop

...several times to finish measuring a long object. > + * The start location of the ruler in the next measurement is the end > + * location of the ruler in the previous measurement. > + * > + * pfn_max & pfn_min: forms the pfn range of the ballooned pages > + * pfn_start & pfn_stop: records the start and stop pfn in each cover cover? what does this mean? looks like you only use these to pass data to tell_host. so pass these as parameters and you won't need to keep them in this structure. And then you can move this comment to set_page_bmap where it belongs. > + */...

...several times to finish measuring a long object. > + * The start location of the ruler in the next measurement is the end > + * location of the ruler in the previous measurement. > + * > + * pfn_max & pfn_min: forms the pfn range of the ballooned pages > + * pfn_start & pfn_stop: records the start and stop pfn in each cover cover? what does this mean? looks like you only use these to pass data to tell_host. so pass these as parameters and you won't need to keep them in this structure. And then you can move this comment to set_page_bmap where it belongs. > + */...

...nish measuring a long object. >> + * The start location of the ruler in the next measurement is the end >> + * location of the ruler in the previous measurement. >> + * >> + * pfn_max & pfn_min: forms the pfn range of the ballooned pages >> + * pfn_start & pfn_stop: records the start and stop pfn in each cover > cover? what does this mean? > > looks like you only use these to pass data to tell_host. > so pass these as parameters and you won't need to keep > them in this structure. > > And then you can move this comment to set_page_bma...

...using a + * short ruler several times to finish measuring a long object. + * The start location of the ruler in the next measurement is the end + * location of the ruler in the previous measurement. + * + * pfn_max & pfn_min: forms the pfn range of the ballooned pages + * pfn_start & pfn_stop: records the start and stop pfn in each cover + */ + unsigned long pfn_min, pfn_max, pfn_start, pfn_stop; /* * The pages we've told the Host we're not using are enqueued * at vb_dev_info->pages list. @@ -110,20 +147,187 @@ static void balloon_ack(struct virtqueue *vq) wake_up(...

...using a + * short ruler several times to finish measuring a long object. + * The start location of the ruler in the next measurement is the end + * location of the ruler in the previous measurement. + * + * pfn_max & pfn_min: forms the pfn range of the ballooned pages + * pfn_start & pfn_stop: records the start and stop pfn in each cover + */ + unsigned long pfn_min, pfn_max, pfn_start, pfn_stop; + /* The array of pfns we tell the Host about. */ unsigned int num_pfns; __virtio32 pfns[VIRTIO_BALLOON_ARRAY_PFNS_MAX]; @@ -110,20 +144,201 @@ static void balloon_ack(struct virtqueue *...

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

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)

...> > > +{ > > > + if (virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_BALLOON_CHUNKS)) { > > > + int pfns, page_bmaps, i; > > > + unsigned long pfn_start, pfns_len; > > > + > > > + pfn_start = vb->pfn_start; > > > + pfns = vb->pfn_stop - pfn_start + 1; > > > + pfns = roundup(roundup(pfns, BITS_PER_LONG), > > > + PFNS_PER_PAGE_BMAP); > > > + page_bmaps = pfns / PFNS_PER_PAGE_BMAP; > > > + pfns_len = pfns / BITS_PER_BYTE; > > > + > > > + for (i = 0; i < page_bmap...

...> > > +{ > > > + if (virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_BALLOON_CHUNKS)) { > > > + int pfns, page_bmaps, i; > > > + unsigned long pfn_start, pfns_len; > > > + > > > + pfn_start = vb->pfn_start; > > > + pfns = vb->pfn_stop - pfn_start + 1; > > > + pfns = roundup(roundup(pfns, BITS_PER_LONG), > > > + PFNS_PER_PAGE_BMAP); > > > + page_bmaps = pfns / PFNS_PER_PAGE_BMAP; > > > + pfns_len = pfns / BITS_PER_BYTE; > > > + > > > + for (i = 0; i < page_bmap...

...irtqueue *inflate_vq, *deflate_vq, *stats_vq; + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *host_req_vq; /* The balloon servicing is 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,...