search for: 088bdf1

transports need to be able to detect legacy-only devices (ATM balloon only) to use legacy path to drive them. Add a core API to do just that. The implementation just blacklists balloon: not too pretty, but let's not over-engineer. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 2 ++ drivers/virtio/virtio.c | 6 ++++++ 2 files changed, 8

transports need to be able to detect legacy-only devices (ATM balloon only) to use legacy path to drive them. Add a core API to do just that. The implementation just blacklists balloon: not too pretty, but let's not over-engineer. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 2 ++ drivers/virtio/virtio.c | 6 ++++++ 2 files changed, 8

...ts. > > Signed-off-by: Michael S. Tsirkin <mst at redhat.com> > --- > drivers/s390/kvm/virtio_ccw.c | 13 ++++++++++--- > 1 file changed, 10 insertions(+), 3 deletions(-) > > diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c > index 4a3e6e5..088bdf1 100644 > --- a/drivers/s390/kvm/virtio_ccw.c > +++ b/drivers/s390/kvm/virtio_ccw.c > @@ -733,6 +733,9 @@ static u64 virtio_ccw_get_features(struct virtio_device *vdev) > > rc = le32_to_cpu(features->features); > > + if (vcdev->revision == 0) > + goto out_free; &gt...

...ts. > > Signed-off-by: Michael S. Tsirkin <mst at redhat.com> > --- > drivers/s390/kvm/virtio_ccw.c | 13 ++++++++++--- > 1 file changed, 10 insertions(+), 3 deletions(-) > > diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c > index 4a3e6e5..088bdf1 100644 > --- a/drivers/s390/kvm/virtio_ccw.c > +++ b/drivers/s390/kvm/virtio_ccw.c > @@ -733,6 +733,9 @@ static u64 virtio_ccw_get_features(struct virtio_device *vdev) > > rc = le32_to_cpu(features->features); > > + if (vcdev->revision == 0) > + goto out_free; &gt...

...VERSION_1 by not reading high feature bits. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/s390/kvm/virtio_ccw.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c index 4a3e6e5..088bdf1 100644 --- a/drivers/s390/kvm/virtio_ccw.c +++ b/drivers/s390/kvm/virtio_ccw.c @@ -733,6 +733,9 @@ static u64 virtio_ccw_get_features(struct virtio_device *vdev) rc = le32_to_cpu(features->features); + if (vcdev->revision == 0) + goto out_free; + /* Read second half of the feature bi...

...features or set status. virtio core will detect this and bail out. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/s390/kvm/virtio_ccw.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c index 088bdf1..0ceeb25 100644 --- a/drivers/s390/kvm/virtio_ccw.c +++ b/drivers/s390/kvm/virtio_ccw.c @@ -65,6 +65,7 @@ struct virtio_ccw_device { bool is_thinint; bool going_away; bool device_lost; + bool features_invalid; void *airq_info; }; @@ -746,6 +747,12 @@ static u64 virtio_ccw_get_features(st...

...VERSION_1 by not reading high feature bits. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/s390/kvm/virtio_ccw.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c index 4a3e6e5..088bdf1 100644 --- a/drivers/s390/kvm/virtio_ccw.c +++ b/drivers/s390/kvm/virtio_ccw.c @@ -733,6 +733,9 @@ static u64 virtio_ccw_get_features(struct virtio_device *vdev) rc = le32_to_cpu(features->features); + if (vcdev->revision == 0) + goto out_free; + /* Read second half of the feature bi...

...features or set status. virtio core will detect this and bail out. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/s390/kvm/virtio_ccw.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c index 088bdf1..0ceeb25 100644 --- a/drivers/s390/kvm/virtio_ccw.c +++ b/drivers/s390/kvm/virtio_ccw.c @@ -65,6 +65,7 @@ struct virtio_ccw_device { bool is_thinint; bool going_away; bool device_lost; + bool features_invalid; void *airq_info; }; @@ -746,6 +747,12 @@ static u64 virtio_ccw_get_features(st...