search for: report_free_page_stop

...> > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -65,6 +71,9 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Stop reporting free pages */ > + bool report_free_page_stop; > + > /* Waiting for host to ack the pages we released. */ > wait_queue_head_t acked; > > @@ -93,6 +102,11 @@ struct virtio_balloon { > > /* To register callback in oom notifier call chain */ > struct notifier_block nb; > + > + /* Host to guest ctrlq cmd b...

...> > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -65,6 +71,9 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Stop reporting free pages */ > + bool report_free_page_stop; > + > /* Waiting for host to ack the pages we released. */ > wait_queue_head_t acked; > > @@ -93,6 +102,11 @@ struct virtio_balloon { > > /* To register callback in oom notifier call chain */ > struct notifier_block nb; > + > + /* Host to guest ctrlq cmd b...

...; > > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; @@ -65,6 +71,9 @@ > struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Stop reporting free pages */ > + bool report_free_page_stop; > + > /* Waiting for host to ack the pages we released. */ > wait_queue_head_t acked; > > @@ -93,6 +102,11 @@ struct virtio_balloon { > > /* To register callback in oom notifier call chain */ > struct notifier_block nb; > + > + /* Host to guest ctrlq cmd buf...

...; > > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; @@ -65,6 +71,9 @@ > struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Stop reporting free pages */ > + bool report_free_page_stop; > + > /* Waiting for host to ack the pages we released. */ > wait_queue_head_t acked; > > @@ -93,6 +102,11 @@ struct virtio_balloon { > > /* To register callback in oom notifier call chain */ > struct notifier_block nb; > + > + /* Host to guest ctrlq cmd buf...

...+ struct work_struct report_free_page_work; /* The balloon servicing is delegated to a freezable workqueue. */ struct work_struct update_balloon_stats_work; @@ -65,6 +71,9 @@ struct virtio_balloon { spinlock_t stop_update_lock; bool stop_update; + /* Stop reporting free pages */ + bool report_free_page_stop; + /* Waiting for host to ack the pages we released. */ wait_queue_head_t acked; @@ -93,6 +102,11 @@ struct virtio_balloon { /* To register callback in oom notifier call chain */ struct notifier_block nb; + + /* Host to guest ctrlq cmd buf for free page report */ + struct virtio_balloon...

...> /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -65,6 +70,10 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Stop reporting free pages */ > + bool report_free_page_stop; > + uint32_t free_page_cmd_id; > + > /* Waiting for host to ack the pages we released. */ > wait_queue_head_t acked; > > @@ -191,6 +200,30 @@ static void send_balloon_page_sg(struct virtio_balloon *vb, > kick_and_wait(vq, vb->acked); > } > > +stat...

...> /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -65,6 +70,10 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Stop reporting free pages */ > + bool report_free_page_stop; > + uint32_t free_page_cmd_id; > + > /* Waiting for host to ack the pages we released. */ > wait_queue_head_t acked; > > @@ -191,6 +200,30 @@ static void send_balloon_page_sg(struct virtio_balloon *vb, > kick_and_wait(vq, vb->acked); > } > > +stat...

...+ struct work_struct report_free_page_work; /* The balloon servicing is delegated to a freezable workqueue. */ struct work_struct update_balloon_stats_work; @@ -65,6 +70,10 @@ struct virtio_balloon { spinlock_t stop_update_lock; bool stop_update; + /* Stop reporting free pages */ + bool report_free_page_stop; + uint32_t free_page_cmd_id; + /* Waiting for host to ack the pages we released. */ wait_queue_head_t acked; @@ -191,6 +200,30 @@ static void send_balloon_page_sg(struct virtio_balloon *vb, kick_and_wait(vq, vb->acked); } +static void send_free_page_sg(struct virtqueue *vq, void *ad...

...n servicing is delegated to a freezable workqueue. */ > > struct work_struct update_balloon_stats_work; > > @@ -65,6 +70,10 @@ struct virtio_balloon { > > spinlock_t stop_update_lock; > > bool stop_update; > > + /* Stop reporting free pages */ > > + bool report_free_page_stop; I would revert logic here: bool report_free_page; > > + uint32_t free_page_cmd_id; > > + > > /* Waiting for host to ack the pages we released. */ > > wait_queue_head_t acked; > > @@ -191,6 +200,30 @@ static void send_balloon_page_sg(struct virtio_balloon *vb,...

...; > + 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_free_page_work); > > + } > > + vb->free_page_cmd_in.class = > > + > VIRTIO_B...

...gt; > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -65,6 +70,10 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Stop reporting free pages */ > + bool report_free_page_stop; > + uint32_t free_page_cmd_id; > + > /* Waiting for host to ack the pages we released. */ > wait_queue_head_t acked; > > @@ -191,6 +200,30 @@ static void send_balloon_page_sg(struct virtio_balloon *vb, > kick_and_wait(vq, vb->acked); > } > > +static voi...

...gt; > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -65,6 +70,10 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Stop reporting free pages */ > + bool report_free_page_stop; > + uint32_t free_page_cmd_id; > + > /* Waiting for host to ack the pages we released. */ > wait_queue_head_t acked; > > @@ -191,6 +200,30 @@ static void send_balloon_page_sg(struct virtio_balloon *vb, > kick_and_wait(vq, vb->acked); > } > > +static voi...

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

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

...pu(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_free_page_work); > > > + } > > > + vb->free_page_cmd_in.clas...

...pu(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_free_page_work); > > > + } > > > + vb->free_page_cmd_in.clas...

...ge() fails to avoid memory leak; - put xb_set_page() under the balloon lock 7) patch 9: simper implementation - start free page reporting by sending a new cmd id from the host - guest acks the start or stop via adding a cmd id to the free page vq - use vb->report_free_page, instead of vb->report_free_page_stop - use WRITE_ONCE/READ_ONCE to access vb->report_free_page - use the new API from patch 6 to send free pages to avoid the unnecessary use of kaddr. 8) patch 10: new patch to solve the page posioning issue reported by Michael S. Tsirkin v16->v17: 1) patch 1: please check the commit log t...

...ge() fails to avoid memory leak; - put xb_set_page() under the balloon lock 7) patch 9: simper implementation - start free page reporting by sending a new cmd id from the host - guest acks the start or stop via adding a cmd id to the free page vq - use vb->report_free_page, instead of vb->report_free_page_stop - use WRITE_ONCE/READ_ONCE to access vb->report_free_page - use the new API from patch 6 to send free pages to avoid the unnecessary use of kaddr. 8) patch 10: new patch to solve the page posioning issue reported by Michael S. Tsirkin v16->v17: 1) patch 1: please check the commit log t...