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...<wei.w.wang at intel.com> > Cc: Michal Hocko <mhocko at suse.com> > --- > drivers/virtio/virtio_balloon.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > index 035bd3a..6ac4cff 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -652,7 +652,9 @@ static void report_free_page(struct work_struct *work) > /* Start by sending the obtained cmd id to the host with an outbuf */ > send_one_desc(vb, vb->free_page_vq, vir...

...<wei.w.wang at intel.com> > Cc: Michal Hocko <mhocko at suse.com> > --- > drivers/virtio/virtio_balloon.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > index 035bd3a..6ac4cff 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -652,7 +652,9 @@ static void report_free_page(struct work_struct *work) > /* Start by sending the obtained cmd id to the host with an outbuf */ > send_one_desc(vb, vb->free_page_vq, vir...

...ko at suse.com> > > > --- > > > drivers/virtio/virtio_balloon.c | 4 +++- > > > 1 file changed, 3 insertions(+), 1 deletion(-) > > > > > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > > > index 035bd3a..6ac4cff 100644 > > > --- a/drivers/virtio/virtio_balloon.c > > > +++ b/drivers/virtio/virtio_balloon.c > > > @@ -652,7 +652,9 @@ static void report_free_page(struct work_struct *work) > > > /* Start by sending the obtained cmd id to the host with an outbuf */ > &gt...

...ko at suse.com> > > > --- > > > drivers/virtio/virtio_balloon.c | 4 +++- > > > 1 file changed, 3 insertions(+), 1 deletion(-) > > > > > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > > > index 035bd3a..6ac4cff 100644 > > > --- a/drivers/virtio/virtio_balloon.c > > > +++ b/drivers/virtio/virtio_balloon.c > > > @@ -652,7 +652,9 @@ static void report_free_page(struct work_struct *work) > > > /* Start by sending the obtained cmd id to the host with an outbuf */ > &gt...

...at.com> Signed-off-by: Wei Wang <wei.w.wang at intel.com> Cc: Michal Hocko <mhocko at suse.com> --- drivers/virtio/virtio_balloon.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 035bd3a..6ac4cff 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -652,7 +652,9 @@ static void report_free_page(struct work_struct *work) /* Start by sending the obtained cmd id to the host with an outbuf */ send_one_desc(vb, vb->free_page_vq, virt_to_phys(&vb->sta...

...t; >> Cc: Michal Hocko <mhocko at suse.com> >> --- >> drivers/virtio/virtio_balloon.c | 4 +++- >> 1 file changed, 3 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c >> index 035bd3a..6ac4cff 100644 >> --- a/drivers/virtio/virtio_balloon.c >> +++ b/drivers/virtio/virtio_balloon.c >> @@ -652,7 +652,9 @@ static void report_free_page(struct work_struct *work) >> /* Start by sending the obtained cmd id to the host with an outbuf */ >> send_one_desc(vb, vb...

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