search for: virtio_balloon_ctrlq_class_free_pag

...rol plane and data plane > separated. In other words, the control related data of each feature will be sent > via the ctrl_vq cmds, meanwhile each feature may have its own data plane vq. > > Free page report is the the first new feature controlled via ctrl_vq, and a new > cmd class, VIRTIO_BALLOON_CTRLQ_CLASS_FREE_PAGE, is added. > Currently, this feature has two cmds: > VIRTIO_BALLOON_FREE_PAGE_F_START: This cmd is sent from host to guest to > start the free page reporting work. > VIRTIO_BALLOON_FREE_PAGE_F_STOP: This cmd is used bidirectionally. The > guest would send the cmd to the host to indi...

...rol plane and data plane > separated. In other words, the control related data of each feature will be sent > via the ctrl_vq cmds, meanwhile each feature may have its own data plane vq. > > Free page report is the the first new feature controlled via ctrl_vq, and a new > cmd class, VIRTIO_BALLOON_CTRLQ_CLASS_FREE_PAGE, is added. > Currently, this feature has two cmds: > VIRTIO_BALLOON_FREE_PAGE_F_START: This cmd is sent from host to guest to > start the free page reporting work. > VIRTIO_BALLOON_FREE_PAGE_F_STOP: This cmd is used bidirectionally. The > guest would send the cmd to the host to indi...

...data > plane separated. In other words, the control related commands of each > feature will be sent via the ctrl_vq, meanwhile each feature may have > its own vq used as a data plane. > > Free page report is the the first new feature controlled via ctrl_vq, > and a new cmd class, VIRTIO_BALLOON_CTRLQ_CLASS_FREE_PAGE, is added. > Currently, this feature has two cmds: > VIRTIO_BALLOON_FREE_PAGE_F_START: This cmd is sent from host to guest > to start the free page report work. > VIRTIO_BALLOON_FREE_PAGE_F_STOP: This cmd is bidirectional. The guest > would send the cmd to the host to indicate the r...

...data > plane separated. In other words, the control related commands of each > feature will be sent via the ctrl_vq, meanwhile each feature may have > its own vq used as a data plane. > > Free page report is the the first new feature controlled via ctrl_vq, > and a new cmd class, VIRTIO_BALLOON_CTRLQ_CLASS_FREE_PAGE, is added. > Currently, this feature has two cmds: > VIRTIO_BALLOON_FREE_PAGE_F_START: This cmd is sent from host to guest > to start the free page report work. > VIRTIO_BALLOON_FREE_PAGE_F_STOP: This cmd is bidirectional. The guest > would send the cmd to the host to indicate the r...

...to have the control plane and data plane separated. In other words, the control related commands of each feature will be sent via the ctrl_vq, meanwhile each feature may have its own vq used as a data plane. Free page report is the the first new feature controlled via ctrl_vq, and a new cmd class, VIRTIO_BALLOON_CTRLQ_CLASS_FREE_PAGE, is added. Currently, this feature has two cmds: VIRTIO_BALLOON_FREE_PAGE_F_START: This cmd is sent from host to guest to start the free page report work. VIRTIO_BALLOON_FREE_PAGE_F_STOP: This cmd is bidirectional. The guest would send the cmd to the host to indicate the reporting work is done. Th...

...cycling, so just return. */ > > + if (msg == &vb->free_page_cmd_out) > > + return; > > + > > + class = virtio32_to_cpu(vb->vdev, msg->class); > > + cmd = virtio32_to_cpu(vb->vdev, msg->cmd); > > + > > + switch (class) { > > + case VIRTIO_BALLOON_CTRLQ_CLASS_FREE_PAGE: > > + if (cmd == VIRTIO_BALLOON_FREE_PAGE_F_STOP) { > > + vb->report_free_page_stop = true; > > + } else if (cmd == VIRTIO_BALLOON_FREE_PAGE_F_START) { > > + vb->report_free_page_stop = false; > > + queue_work(vb->balloon_wq, &vb- > >report...

...t; + if (msg == &vb->free_page_cmd_out) > > > + return; > > > + > > > + class = virtio32_to_cpu(vb->vdev, msg->class); > > > + cmd = virtio32_to_cpu(vb->vdev, msg->cmd); > > > + > > > + switch (class) { > > > + case VIRTIO_BALLOON_CTRLQ_CLASS_FREE_PAGE: > > > + if (cmd == VIRTIO_BALLOON_FREE_PAGE_F_STOP) { > > > + vb->report_free_page_stop = true; > > > + } else if (cmd == VIRTIO_BALLOON_FREE_PAGE_F_START) { > > > + vb->report_free_page_stop = false; > > > + queue_work(vb->balloon_wq,...

...t; + if (msg == &vb->free_page_cmd_out) > > > + return; > > > + > > > + class = virtio32_to_cpu(vb->vdev, msg->class); > > > + cmd = virtio32_to_cpu(vb->vdev, msg->cmd); > > > + > > > + switch (class) { > > > + case VIRTIO_BALLOON_CTRLQ_CLASS_FREE_PAGE: > > > + if (cmd == VIRTIO_BALLOON_FREE_PAGE_F_STOP) { > > > + vb->report_free_page_stop = true; > > > + } else if (cmd == VIRTIO_BALLOON_FREE_PAGE_F_START) { > > > + vb->report_free_page_stop = false; > > > + queue_work(vb->balloon_wq,...

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 array each time; and 2) free page block reporting: a new virtqueue to report guest free pages to the host. The second feature can be used to accelerate live migration of VMs. Here are some details: Live

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 array each time; and 2) free page block reporting: a new virtqueue to report guest free pages to the host. The second feature can be used to accelerate live migration of VMs. Here are some details: Live