search for: virtio_balloon_stats

agl at linux.vnet.ibm.com wrote: > Here are the corresponding changes to the Linux virtio driver... > > virtio: Add memory statistics reporting to the balloon driver > > When using ballooning to manage overcommitted memory on a host, a system for > guests to communicate their memory usage to the host can provide information > that will minimize the impact

agl at linux.vnet.ibm.com wrote: > Here are the corresponding changes to the Linux virtio driver... > > virtio: Add memory statistics reporting to the balloon driver > > When using ballooning to manage overcommitted memory on a host, a system for > guests to communicate their memory usage to the host can provide information > that will minimize the impact

On Tue, 14 Apr 2015 11:21:11 +0200 "Michael S. Tsirkin" <mst at redhat.com> wrote: > diff --git a/include/uapi/linux/virtio_balloon.h b/include/uapi/linux/virtio_balloon.h > index f81b220..164e0c2 100644 > --- a/include/uapi/linux/virtio_balloon.h > +++ b/include/uapi/linux/virtio_balloon.h > @@ -52,15 +52,31 @@ struct virtio_balloon_config { > #define

On Tue, 14 Apr 2015 11:21:11 +0200 "Michael S. Tsirkin" <mst at redhat.com> wrote: > diff --git a/include/uapi/linux/virtio_balloon.h b/include/uapi/linux/virtio_balloon.h > index f81b220..164e0c2 100644 > --- a/include/uapi/linux/virtio_balloon.h > +++ b/include/uapi/linux/virtio_balloon.h > @@ -52,15 +52,31 @@ struct virtio_balloon_config { > #define

On Tue, Apr 14, 2015 at 11:50:53AM +0200, Cornelia Huck wrote: > On Tue, 14 Apr 2015 11:21:11 +0200 > "Michael S. Tsirkin" <mst at redhat.com> wrote: > > > diff --git a/include/uapi/linux/virtio_balloon.h b/include/uapi/linux/virtio_balloon.h > > index f81b220..164e0c2 100644 > > --- a/include/uapi/linux/virtio_balloon.h > > +++

Looks like we are better off sticking with the misaligned stat struct, to reduce the amount of virtio 1 specific code in balloon. So let's do it. Add a detailed comment to reduce the chance people copy this bad example. This also fixes a bug on BE architectures: tag should use cpu_to_le16, not cpu_to_le32. Acked-by: Cornelia Huck <cornelia.huck at de.ibm.com> Signed-off-by: Michael

Looks like we are better off sticking with the misaligned stat struct, to reduce the amount of virtio 1 specific code in balloon. So let's do it. Add a detailed comment to reduce the chance people copy this bad example. This also fixes a bug on BE architectures: tag should use cpu_to_le16, not cpu_to_le32. Acked-by: Cornelia Huck <cornelia.huck at de.ibm.com> Signed-off-by: Michael

On Tue, Apr 14, 2015 at 10:24:38AM +0200, Cornelia Huck wrote: > On Tue, 14 Apr 2015 10:42:56 +0930 > Rusty Russell <rusty at rustcorp.com.au> wrote: > > > "Michael S. Tsirkin" <mst at redhat.com> writes: > > > On Wed, Apr 01, 2015 at 02:57:35PM +0200, Michael S. Tsirkin wrote: > > >> Virtio 1.0 doesn't include a modern balloon device.

On Tue, 14 Apr 2015 10:42:56 +0930 Rusty Russell <rusty at rustcorp.com.au> wrote: > "Michael S. Tsirkin" <mst at redhat.com> writes: > > On Wed, Apr 01, 2015 at 02:57:35PM +0200, Michael S. Tsirkin wrote: > >> Virtio 1.0 doesn't include a modern balloon device. At some point we'll likely > >> define an incompatible interface with a

On Tue, 14 Apr 2015 10:42:56 +0930 Rusty Russell <rusty at rustcorp.com.au> wrote: > "Michael S. Tsirkin" <mst at redhat.com> writes: > > On Wed, Apr 01, 2015 at 02:57:35PM +0200, Michael S. Tsirkin wrote: > >> Virtio 1.0 doesn't include a modern balloon device. At some point we'll likely > >> define an incompatible interface with a

"Michael S. Tsirkin" <mst at redhat.com> writes: > On Tue, Apr 14, 2015 at 11:50:53AM +0200, Cornelia Huck wrote: >> On Tue, 14 Apr 2015 11:21:11 +0200 >> "Michael S. Tsirkin" <mst at redhat.com> wrote: >> >> > diff --git a/include/uapi/linux/virtio_balloon.h b/include/uapi/linux/virtio_balloon.h >> > index f81b220..164e0c2

"Michael S. Tsirkin" <mst at redhat.com> writes: > On Tue, Apr 14, 2015 at 11:50:53AM +0200, Cornelia Huck wrote: >> On Tue, 14 Apr 2015 11:21:11 +0200 >> "Michael S. Tsirkin" <mst at redhat.com> wrote: >> >> > diff --git a/include/uapi/linux/virtio_balloon.h b/include/uapi/linux/virtio_balloon.h >> > index f81b220..164e0c2

On Thu, Mar 03, 2016 at 06:44:26PM +0800, Liang Li wrote: > Extend the virtio balloon device to support a new feature, this > new feature can help to get guest's free pages information, which > can be used for live migration optimzation. > > Signed-off-by: Liang Li <liang.z.li at intel.com> I don't understand why we need a new interface. Balloon already sends free

Rusty and Anthony, If I've addressed all outstanding issues, please consider this patch for inclusion. Thanks. Changes since V2: - Increase stat field size to 64 bits - Report all sizes in kb (not pages) - Drop anon_pages stat and fix endianness conversion Changes since V1: - Use a virtqueue instead of the device config space When using ballooning to manage overcommitted memory on a

Rusty and Anthony, If I've addressed all outstanding issues, please consider this patch for inclusion. Thanks. Changes since V2: - Increase stat field size to 64 bits - Report all sizes in kb (not pages) - Drop anon_pages stat and fix endianness conversion Changes since V1: - Use a virtqueue instead of the device config space When using ballooning to manage overcommitted memory on a

Virtio 1.0 doesn't include a modern balloon device. But it's not a big change to support a transitional balloon device: this has the advantage of supporting existing drivers, transparently. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/uapi/linux/virtio_balloon.h | 11 +++++++++-- drivers/virtio/virtio_balloon.c | 29 +++++++++++++++++++++-------- 2 files

Virtio 1.0 doesn't include a modern balloon device. But it's not a big change to support a transitional balloon device: this has the advantage of supporting existing drivers, transparently. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/uapi/linux/virtio_balloon.h | 11 +++++++++-- drivers/virtio/virtio_balloon.c | 29 +++++++++++++++++++++-------- 2 files

Virtio 1.0 doesn't include a modern balloon device. But it's not a big change to support a transitional balloon device: this has the advantage of supporting existing drivers, transparently. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/uapi/linux/virtio_balloon.h | 11 ++++++++-- drivers/virtio/virtio_balloon.c | 43 +++++++++++++++++++++++++++++-------- 2

Extend the virtio balloon device to support a new feature, this new feature can help to get guest's free pages information, which can be used for live migration optimzation. Signed-off-by: Liang Li <liang.z.li at intel.com> --- balloon.c | 30 ++++++++- hw/virtio/virtio-balloon.c | 81 ++++++++++++++++++++++++-

Virtio 1.0 doesn't include a modern balloon device. But it's not a big change to support a transitional balloon device: this has the advantage of supporting existing drivers, transparently. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/uapi/linux/virtio_balloon.h | 11 ++++++++-- drivers/virtio/virtio_balloon.c | 43 +++++++++++++++++++++++++++++-------- 2