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...drivers/virtio/virtio_balloon.c | 242 > +++++++++++++++++++++++++++++++----- > include/uapi/linux/virtio_balloon.h | 4 + > 2 files changed, 214 insertions(+), 32 deletions(-) > > diff --git a/drivers/virtio/virtio_balloon.c > b/drivers/virtio/virtio_balloon.c > index a1fb52c..b9561a5 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -53,7 +53,12 @@ static struct vfsmount *balloon_mnt; > > struct virtio_balloon { > struct virtio_device *vdev; > - struct virtqueue *inflate_vq, *deflate_vq, *stats_vq; &gt...

...drivers/virtio/virtio_balloon.c | 242 > +++++++++++++++++++++++++++++++----- > include/uapi/linux/virtio_balloon.h | 4 + > 2 files changed, 214 insertions(+), 32 deletions(-) > > diff --git a/drivers/virtio/virtio_balloon.c > b/drivers/virtio/virtio_balloon.c > index a1fb52c..b9561a5 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -53,7 +53,12 @@ static struct vfsmount *balloon_mnt; > > struct virtio_balloon { > struct virtio_device *vdev; > - struct virtqueue *inflate_vq, *deflate_vq, *stats_vq; &gt...

....c | 242 >> +++++++++++++++++++++++++++++++----- >> include/uapi/linux/virtio_balloon.h | 4 + >> 2 files changed, 214 insertions(+), 32 deletions(-) >> >> diff --git a/drivers/virtio/virtio_balloon.c >> b/drivers/virtio/virtio_balloon.c >> index a1fb52c..b9561a5 100644 >> --- a/drivers/virtio/virtio_balloon.c >> +++ b/drivers/virtio/virtio_balloon.c >> @@ -53,7 +53,12 @@ static struct vfsmount *balloon_mnt; >> >> struct virtio_balloon { >> struct virtio_device *vdev; >> - struct virtqueue *inflate_...

...+++++++++++++++++++++++++----- > >> include/uapi/linux/virtio_balloon.h | 4 + > >> 2 files changed, 214 insertions(+), 32 deletions(-) > >> > >> diff --git a/drivers/virtio/virtio_balloon.c > >> b/drivers/virtio/virtio_balloon.c > >> index a1fb52c..b9561a5 100644 > >> --- a/drivers/virtio/virtio_balloon.c > >> +++ b/drivers/virtio/virtio_balloon.c > >> @@ -53,7 +53,12 @@ static struct vfsmount *balloon_mnt; > >> > >> struct virtio_balloon { > >> struct virtio_device *vdev;...

...ko <mhocko at kernel.org> --- drivers/virtio/virtio_balloon.c | 242 +++++++++++++++++++++++++++++++----- include/uapi/linux/virtio_balloon.h | 4 + 2 files changed, 214 insertions(+), 32 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index a1fb52c..b9561a5 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -53,7 +53,12 @@ static struct vfsmount *balloon_mnt; struct virtio_balloon { struct virtio_device *vdev; - struct virtqueue *inflate_vq, *deflate_vq, *stats_vq; + struct virtqueue *inflate_vq, *defla...

...--- include/uapi/linux/virtio_balloon.h | 7 + mm/page_poison.c | 6 + 3 files changed, 232 insertions(+), 36 deletions(-) Resend Change: - Expose page_poisoning_enabled to kernel modules diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index a1fb52c..5476725 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -51,9 +51,22 @@ MODULE_PARM_DESC(oom_pages, "pages to free on OOM"); static struct vfsmount *balloon_mnt; #endif +enum virtio_balloon_vq { + VIRTIO_BALLOON_VQ_INFLATE, + VIRTIO_BALLOON_VQ_DE...

...--- include/uapi/linux/virtio_balloon.h | 7 + mm/page_poison.c | 6 + 3 files changed, 232 insertions(+), 36 deletions(-) Resend Change: - Expose page_poisoning_enabled to kernel modules diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index a1fb52c..5476725 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -51,9 +51,22 @@ MODULE_PARM_DESC(oom_pages, "pages to free on OOM"); static struct vfsmount *balloon_mnt; #endif +enum virtio_balloon_vq { + VIRTIO_BALLOON_VQ_INFLATE, + VIRTIO_BALLOON_VQ_DE...

...ko <mhocko at kernel.org> --- drivers/virtio/virtio_balloon.c | 228 ++++++++++++++++++++++++++++++------ include/uapi/linux/virtio_balloon.h | 6 + 2 files changed, 201 insertions(+), 33 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index a1fb52c..d038f4a 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -51,9 +51,21 @@ MODULE_PARM_DESC(oom_pages, "pages to free on OOM"); static struct vfsmount *balloon_mnt; #endif +/* The number of virtqueues supported by virtio-balloon */ +#define VIRTIO_B...

...ko <mhocko at kernel.org> --- drivers/virtio/virtio_balloon.c | 251 ++++++++++++++++++++++++++++++------ include/uapi/linux/virtio_balloon.h | 7 + 2 files changed, 222 insertions(+), 36 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index a1fb52c..114985b 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -51,9 +51,22 @@ MODULE_PARM_DESC(oom_pages, "pages to free on OOM"); static struct vfsmount *balloon_mnt; #endif +enum virtio_balloon_vq { + VIRTIO_BALLOON_VQ_INFLATE, + VIRTIO_BALLOON_VQ_DE...

...rnel at I-love.SAKURA.ne.jp> --- drivers/virtio/virtio_balloon.c | 234 +++++++++++++++++++++++++++++++++--- include/uapi/linux/virtio_balloon.h | 1 + 2 files changed, 217 insertions(+), 18 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index a1fb52c..fff0a3f 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -32,6 +32,8 @@ #include <linux/mm.h> #include <linux/mount.h> #include <linux/magic.h> +#include <linux/xbitmap.h> +#include <asm/page.h> /* * Balloon device works in...

This patch series is separated from the previous "Virtio-balloon Enhancement" series. The new feature, VIRTIO_BALLOON_F_FREE_PAGE_VQ, 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 memory

This patch series is separated from the previous "Virtio-balloon Enhancement" series. The new feature, VIRTIO_BALLOON_F_FREE_PAGE_VQ, 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 memory

This patch series is separated from the previous "Virtio-balloon Enhancement" series. The new feature, VIRTIO_BALLOON_F_FREE_PAGE_VQ, 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 memory

...++++++++++++++++++++++++++++++--- include/uapi/linux/virtio_balloon.h | 1 + 2 files changed, 216 insertions(+), 18 deletions(-) RESEND ChangeLog: - fill_balloon(): move xb_set_page before balloon_page_enqueue diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index a1fb52c..d0b8ea0 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -32,6 +32,8 @@ #include <linux/mm.h> #include <linux/mount.h> #include <linux/magic.h> +#include <linux/xbitmap.h> +#include <asm/page.h> /* * Balloon device works in...

...ko <mhocko at kernel.org> --- drivers/virtio/virtio_balloon.c | 265 +++++++++++++++++++++++++++++++----- include/uapi/linux/virtio_balloon.h | 7 + 2 files changed, 236 insertions(+), 36 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index a1fb52c..4440873 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -51,9 +51,21 @@ MODULE_PARM_DESC(oom_pages, "pages to free on OOM"); static struct vfsmount *balloon_mnt; #endif +/* The number of virtqueues supported by virtio-balloon */ +#define VIRTIO_B...

...; --- > drivers/virtio/virtio_balloon.c | 228 ++++++++++++++++++++++++++++++------ > include/uapi/linux/virtio_balloon.h | 6 + > 2 files changed, 201 insertions(+), 33 deletions(-) > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > index a1fb52c..d038f4a 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -51,9 +51,21 @@ MODULE_PARM_DESC(oom_pages, "pages to free on OOM"); > static struct vfsmount *balloon_mnt; > #endif > > +/* The number of virtqueues supported by...

...; --- > drivers/virtio/virtio_balloon.c | 228 ++++++++++++++++++++++++++++++------ > include/uapi/linux/virtio_balloon.h | 6 + > 2 files changed, 201 insertions(+), 33 deletions(-) > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > index a1fb52c..d038f4a 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -51,9 +51,21 @@ MODULE_PARM_DESC(oom_pages, "pages to free on OOM"); > static struct vfsmount *balloon_mnt; > #endif > > +/* The number of virtqueues supported by...

...v27, and you want the mm patch as a separate one, so you can get an ack on it from someone on linux-mm. In fact, I would probably add reporting the poison value as a separate feature/couple of patches. > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > index a1fb52c..5476725 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -51,9 +51,22 @@ MODULE_PARM_DESC(oom_pages, "pages to free on OOM"); > static struct vfsmount *balloon_mnt; > #endif > > +enum virtio_balloon_vq { > + VIRTIO_BA...

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

...; --- > drivers/virtio/virtio_balloon.c | 251 ++++++++++++++++++++++++++++++------ > include/uapi/linux/virtio_balloon.h | 7 + > 2 files changed, 222 insertions(+), 36 deletions(-) > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > index a1fb52c..114985b 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -51,9 +51,22 @@ MODULE_PARM_DESC(oom_pages, "pages to free on OOM"); > static struct vfsmount *balloon_mnt; > #endif > > +enum virtio_balloon_vq { > + VIRTIO_BA...