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...late/deflate. To fix, call virtio_device_ready before running the kthread. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/virtio/virtio_balloon.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 5a6ad6d..6a356e3 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -508,6 +508,8 @@ static int virtballoon_probe(struct virtio_device *vdev) if (err < 0) goto out_oom_notify; + virtio_device_ready(vdev); + vb->thread = kthread_run(balloon, vb, "vballo...

...late/deflate. To fix, call virtio_device_ready before running the kthread. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/virtio/virtio_balloon.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 5a6ad6d..6a356e3 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -508,6 +508,8 @@ static int virtballoon_probe(struct virtio_device *vdev) if (err < 0) goto out_oom_notify; + virtio_device_ready(vdev); + vb->thread = kthread_run(balloon, vb, "vballo...

...remove wait_event_interruptible noticed by Cornelia Huck <cornelia.huck at de.ibm.com> drivers/virtio/virtio_balloon.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 0413157..5a6ad6d 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -29,6 +29,7 @@ #include <linux/module.h> #include <linux/balloon_compaction.h> #include <linux/oom.h> +#include <linux/wait.h> /* * Balloon device works in 4K page units. So each p...

...remove wait_event_interruptible noticed by Cornelia Huck <cornelia.huck at de.ibm.com> drivers/virtio/virtio_balloon.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 0413157..5a6ad6d 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -29,6 +29,7 @@ #include <linux/module.h> #include <linux/balloon_compaction.h> #include <linux/oom.h> +#include <linux/wait.h> /* * Balloon device works in 4K page units. So each p...

...t; Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Replied, CC'd stable. Thanks, Rusty. > --- > drivers/virtio/virtio_balloon.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > index 5a6ad6d..6a356e3 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -508,6 +508,8 @@ static int virtballoon_probe(struct virtio_device *vdev) > if (err < 0) > goto out_oom_notify; > > + virtio_device_ready(vdev); > + > vb->t...

...CC'd stable. Did you mean applied? > Thanks, > Rusty. > > > > --- > > drivers/virtio/virtio_balloon.c | 2 ++ > > 1 file changed, 2 insertions(+) > > > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > > index 5a6ad6d..6a356e3 100644 > > --- a/drivers/virtio/virtio_balloon.c > > +++ b/drivers/virtio/virtio_balloon.c > > @@ -508,6 +508,8 @@ static int virtballoon_probe(struct virtio_device *vdev) > > if (err < 0) > > goto out_oom_notify; > > > > + virtio_device_...

...t; Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Replied, CC'd stable. Thanks, Rusty. > --- > drivers/virtio/virtio_balloon.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > index 5a6ad6d..6a356e3 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -508,6 +508,8 @@ static int virtballoon_probe(struct virtio_device *vdev) > if (err < 0) > goto out_oom_notify; > > + virtio_device_ready(vdev); > + > vb->t...

...CC'd stable. Did you mean applied? > Thanks, > Rusty. > > > > --- > > drivers/virtio/virtio_balloon.c | 2 ++ > > 1 file changed, 2 insertions(+) > > > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > > index 5a6ad6d..6a356e3 100644 > > --- a/drivers/virtio/virtio_balloon.c > > +++ b/drivers/virtio/virtio_balloon.c > > @@ -508,6 +508,8 @@ static int virtballoon_probe(struct virtio_device *vdev) > > if (err < 0) > > goto out_oom_notify; > > > > + virtio_device_...

...remove wait_event_interruptible noticed by Cornelia Huck <cornelia.huck at de.ibm.com> drivers/virtio/virtio_balloon.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 0413157..5a6ad6d 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -29,6 +29,7 @@ #include <linux/module.h> #include <linux/balloon_compaction.h> #include <linux/oom.h> +#include <linux/wait.h> /* * Balloon device works in 4K page units. So each p...

...remove wait_event_interruptible noticed by Cornelia Huck <cornelia.huck at de.ibm.com> drivers/virtio/virtio_balloon.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 0413157..5a6ad6d 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -29,6 +29,7 @@ #include <linux/module.h> #include <linux/balloon_compaction.h> #include <linux/oom.h> +#include <linux/wait.h> /* * Balloon device works in 4K page units. So each p...

On Thu, Feb 26, 2015 at 11:50:42AM +1030, Rusty Russell wrote: > Thomas Huth <thuth at linux.vnet.ibm.com> writes: > > Hi all, > > > > with the recent kernel 3.19, I get a kernel warning when I start my > > KVM guest on s390 with virtio balloon enabled: > > The deeper problem is that virtio_ccw_get_config just silently fails on > OOM. > > Neither

On Thu, Feb 26, 2015 at 11:50:42AM +1030, Rusty Russell wrote: > Thomas Huth <thuth at linux.vnet.ibm.com> writes: > > Hi all, > > > > with the recent kernel 3.19, I get a kernel warning when I start my > > KVM guest on s390 with virtio balloon enabled: > > The deeper problem is that virtio_ccw_get_config just silently fails on > OOM. > > Neither