search for: cmdq_hdr_add

..._page_hdr; > + > /* To register callback in oom notifier call chain */ > struct notifier_block nb; > }; > @@ -485,25 +492,214 @@ static void update_balloon_size_func(struct work_struct *work) > queue_work(system_freezable_wq, work); > } > > +static unsigned int cmdq_hdr_add(struct virtqueue *vq, > + struct virtio_balloon_cmdq_hdr *hdr, > + bool in) > +{ > + unsigned int id = VIRTQUEUE_DESC_ID_INIT; > + uint64_t hdr_pa = (uint64_t)virt_to_phys((void *)hdr); > + > + virtqueue_add_chain_desc(vq, hdr_pa, sizeof(*hdr), &id, &id, in); &g...

..._page_hdr; > + > /* To register callback in oom notifier call chain */ > struct notifier_block nb; > }; > @@ -485,25 +492,214 @@ static void update_balloon_size_func(struct work_struct *work) > queue_work(system_freezable_wq, work); > } > > +static unsigned int cmdq_hdr_add(struct virtqueue *vq, > + struct virtio_balloon_cmdq_hdr *hdr, > + bool in) > +{ > + unsigned int id = VIRTQUEUE_DESC_ID_INIT; > + uint64_t hdr_pa = (uint64_t)virt_to_phys((void *)hdr); > + > + virtqueue_add_chain_desc(vq, hdr_pa, sizeof(*hdr), &id, &id, in); &g...

...+ struct virtio_balloon_cmdq_hdr cmdq_unused_page_hdr; + /* To register callback in oom notifier call chain */ struct notifier_block nb; }; @@ -485,25 +492,214 @@ static void update_balloon_size_func(struct work_struct *work) queue_work(system_freezable_wq, work); } +static unsigned int cmdq_hdr_add(struct virtqueue *vq, + struct virtio_balloon_cmdq_hdr *hdr, + bool in) +{ + unsigned int id = VIRTQUEUE_DESC_ID_INIT; + uint64_t hdr_pa = (uint64_t)virt_to_phys((void *)hdr); + + virtqueue_add_chain_desc(vq, hdr_pa, sizeof(*hdr), &id, &id, in); + + /* Deliver the hdr for the host t...

...gister callback in oom notifier call chain */ >> struct notifier_block nb; >> }; >> @@ -485,25 +492,214 @@ static void update_balloon_size_func(struct work_struct *work) >> queue_work(system_freezable_wq, work); >> } >> >> +static unsigned int cmdq_hdr_add(struct virtqueue *vq, >> + struct virtio_balloon_cmdq_hdr *hdr, >> + bool in) >> +{ >> + unsigned int id = VIRTQUEUE_DESC_ID_INIT; >> + uint64_t hdr_pa = (uint64_t)virt_to_phys((void *)hdr); >> + >> + virtqueue_add_chain_desc(vq, hdr_pa, sizeof(*hdr...

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 by one; and 2) cmdq: a new virtqueue to send commands between the device and driver. Currently, it supports commands to report memory stats (replace the old statq mechanism) and report guest unused pages.

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 by one; and 2) cmdq: a new virtqueue to send commands between the device and driver. Currently, it supports commands to report memory stats (replace the old statq mechanism) and report guest unused pages.