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...drivers/virtio/virtio_balloon.c | 187 +++++++++++++++++++++++++++++------- > include/uapi/linux/virtio_balloon.h | 13 +++ > 2 files changed, 163 insertions(+), 37 deletions(-) > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > index 6b237e3..582a03b 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -43,6 +43,9 @@ > #define OOM_VBALLOON_DEFAULT_PAGES 256 > #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > +/* The size of memory in bytes allocated for reporting free page hints */ &g...

...drivers/virtio/virtio_balloon.c | 187 +++++++++++++++++++++++++++++------- > include/uapi/linux/virtio_balloon.h | 13 +++ > 2 files changed, 163 insertions(+), 37 deletions(-) > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > index 6b237e3..582a03b 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -43,6 +43,9 @@ > #define OOM_VBALLOON_DEFAULT_PAGES 256 > #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > +/* The size of memory in bytes allocated for reporting free page hints */ &g...

...++++++++++++-- > > ----- > > > include/uapi/linux/virtio_balloon.h | 13 +++ > > > 2 files changed, 163 insertions(+), 37 deletions(-) > > > > > > diff --git a/drivers/virtio/virtio_balloon.c > > > b/drivers/virtio/virtio_balloon.c index 6b237e3..582a03b 100644 > > > --- a/drivers/virtio/virtio_balloon.c > > > +++ b/drivers/virtio/virtio_balloon.c > > > @@ -43,6 +43,9 @@ > > > #define OOM_VBALLOON_DEFAULT_PAGES 256 #define > > > VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > > > > > +/* The s...

...++++++++++++-- > > ----- > > > include/uapi/linux/virtio_balloon.h | 13 +++ > > > 2 files changed, 163 insertions(+), 37 deletions(-) > > > > > > diff --git a/drivers/virtio/virtio_balloon.c > > > b/drivers/virtio/virtio_balloon.c index 6b237e3..582a03b 100644 > > > --- a/drivers/virtio/virtio_balloon.c > > > +++ b/drivers/virtio/virtio_balloon.c > > > @@ -43,6 +43,9 @@ > > > #define OOM_VBALLOON_DEFAULT_PAGES 256 #define > > > VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > > > > > +/* The s...

....c | 187 +++++++++++++++++++++++++++++-- > ----- > > include/uapi/linux/virtio_balloon.h | 13 +++ > > 2 files changed, 163 insertions(+), 37 deletions(-) > > > > diff --git a/drivers/virtio/virtio_balloon.c > > b/drivers/virtio/virtio_balloon.c index 6b237e3..582a03b 100644 > > --- a/drivers/virtio/virtio_balloon.c > > +++ b/drivers/virtio/virtio_balloon.c > > @@ -43,6 +43,9 @@ > > #define OOM_VBALLOON_DEFAULT_PAGES 256 #define > > VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > > > +/* The size of memory in bytes allocated fo...

...----- > > > > include/uapi/linux/virtio_balloon.h | 13 +++ > > > > 2 files changed, 163 insertions(+), 37 deletions(-) > > > > > > > > diff --git a/drivers/virtio/virtio_balloon.c > > > > b/drivers/virtio/virtio_balloon.c index 6b237e3..582a03b 100644 > > > > --- a/drivers/virtio/virtio_balloon.c > > > > +++ b/drivers/virtio/virtio_balloon.c > > > > @@ -43,6 +43,9 @@ > > > > #define OOM_VBALLOON_DEFAULT_PAGES 256 #define > > > > VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > >...

This patch series is separated from the previous "Virtio-balloon Enhancement" series. The new feature, VIRTIO_BALLOON_F_FREE_PAGE_HINT, implemented by this series enables the virtio-balloon driver to report hints of guest free pages to the host. It can be used to accelerate live migration of VMs. Here is an introduction of this usage: Live migration needs to transfer the VM's

This patch series is separated from the previous "Virtio-balloon Enhancement" series. The new feature, VIRTIO_BALLOON_F_FREE_PAGE_HINT, implemented by this series enables the virtio-balloon driver to report hints of guest free pages to the host. It can be used to accelerate live migration of VMs. Here is an introduction of this usage: Live migration needs to transfer the VM's

...x-foundation.org> --- drivers/virtio/virtio_balloon.c | 187 +++++++++++++++++++++++++++++------- include/uapi/linux/virtio_balloon.h | 13 +++ 2 files changed, 163 insertions(+), 37 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 6b237e3..582a03b 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -43,6 +43,9 @@ #define OOM_VBALLOON_DEFAULT_PAGES 256 #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 +/* The size of memory in bytes allocated for reporting free page hints */ +#define FREE_PAGE_HINT_MEM_SIZE (PAG...

...> include/uapi/linux/virtio_balloon.h | 13 +++ > > > > > 2 files changed, 163 insertions(+), 37 deletions(-) > > > > > > > > > > diff --git a/drivers/virtio/virtio_balloon.c > > > > > b/drivers/virtio/virtio_balloon.c index 6b237e3..582a03b 100644 > > > > > --- a/drivers/virtio/virtio_balloon.c > > > > > +++ b/drivers/virtio/virtio_balloon.c > > > > > @@ -43,6 +43,9 @@ > > > > > #define OOM_VBALLOON_DEFAULT_PAGES 256 #define > > > > > VIRTBALLOON_OOM_NOTIFY_P...