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...rr_dma_area: > + kfree(io_priv); Indentation. > +err_priv: > + put_device(&sch->dev); > + return ERR_PTR(-ENOMEM); > } [...] > void ccw_device_update_sense_data(struct ccw_device *cdev) > { > memset(&cdev->id, 0, sizeof(cdev->id)); > - cdev->id.cu_type = cdev->private->senseid.cu_type; > - cdev->id.cu_model = cdev->private->senseid.cu_model; > - cdev->id.dev_type = cdev->private->senseid.dev_type; > - cdev->id.dev_model = cdev->private->senseid.dev_model; > + cdev->id.cu_type = > + cdev-&g...

...RN_WARNING "cio: last channel program " "(intern):\n"); else @@ -143,18 +143,18 @@ ccw_device_cancel_halt_clear(struct ccw_device *cdev) void ccw_device_update_sense_data(struct ccw_device *cdev) { memset(&cdev->id, 0, sizeof(cdev->id)); - cdev->id.cu_type = cdev->private->senseid.cu_type; - cdev->id.cu_model = cdev->private->senseid.cu_model; - cdev->id.dev_type = cdev->private->senseid.dev_type; - cdev->id.dev_model = cdev->private->senseid.dev_model; + cdev->id.cu_type = cdev->private->dma_area->s...

...RN_WARNING "cio: last channel program " "(intern):\n"); else @@ -143,18 +145,26 @@ ccw_device_cancel_halt_clear(struct ccw_device *cdev) void ccw_device_update_sense_data(struct ccw_device *cdev) { memset(&cdev->id, 0, sizeof(cdev->id)); - cdev->id.cu_type = cdev->private->senseid.cu_type; - cdev->id.cu_model = cdev->private->senseid.cu_model; - cdev->id.dev_type = cdev->private->senseid.dev_type; - cdev->id.dev_model = cdev->private->senseid.dev_model; + cdev->id.cu_type = + cdev->private->dma_area-&g...

...RN_WARNING "cio: last channel program " "(intern):\n"); else @@ -143,18 +145,22 @@ ccw_device_cancel_halt_clear(struct ccw_device *cdev) void ccw_device_update_sense_data(struct ccw_device *cdev) { memset(&cdev->id, 0, sizeof(cdev->id)); - cdev->id.cu_type = cdev->private->senseid.cu_type; - cdev->id.cu_model = cdev->private->senseid.cu_model; - cdev->id.dev_type = cdev->private->senseid.dev_type; - cdev->id.dev_model = cdev->private->senseid.dev_model; + cdev->id.cu_type = cdev->private->dma_area->sen...

...RN_WARNING "cio: last channel program " "(intern):\n"); else @@ -143,18 +145,22 @@ ccw_device_cancel_halt_clear(struct ccw_device *cdev) void ccw_device_update_sense_data(struct ccw_device *cdev) { memset(&cdev->id, 0, sizeof(cdev->id)); - cdev->id.cu_type = cdev->private->senseid.cu_type; - cdev->id.cu_model = cdev->private->senseid.cu_model; - cdev->id.dev_type = cdev->private->senseid.dev_type; - cdev->id.dev_model = cdev->private->senseid.dev_model; + cdev->id.cu_type = cdev->private->dma_area->sen...

...> + goto out_free; > + > /* Read second half of the feature bits from the host. */ > features->index = 1; > ccw->cmd_code = CCW_CMD_READ_FEAT; > @@ -1182,9 +1185,13 @@ static int virtio_ccw_online(struct ccw_device *cdev) > vcdev->vdev.id.vendor = cdev->id.cu_type; > vcdev->vdev.id.device = cdev->id.cu_model; > > - ret = virtio_ccw_set_transport_rev(vcdev); > - if (ret) > - goto out_free; > + if (virtio_device_is_legacy_only(vcdev->vdev.id)) { Inverted logic? > + ret = virtio_ccw_set_transport_rev(vcdev); > + if (ret)...

...> + goto out_free; > + > /* Read second half of the feature bits from the host. */ > features->index = 1; > ccw->cmd_code = CCW_CMD_READ_FEAT; > @@ -1182,9 +1185,13 @@ static int virtio_ccw_online(struct ccw_device *cdev) > vcdev->vdev.id.vendor = cdev->id.cu_type; > vcdev->vdev.id.device = cdev->id.cu_model; > > - ret = virtio_ccw_set_transport_rev(vcdev); > - if (ret) > - goto out_free; > + if (virtio_device_is_legacy_only(vcdev->vdev.id)) { Inverted logic? > + ret = virtio_ccw_set_transport_rev(vcdev); > + if (ret)...

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

...t;ccw_cb = virtio_ccw_cb; > + sch->disable_cb = virtio_sch_disable_cb; > > /* Build senseid data. */ > memset(&sch->id, 0, sizeof(SenseId)); > @@ -747,6 +797,8 @@ static int virtio_ccw_device_init(VirtioCcwDevice *dev, VirtIODevice *vdev) > sch->id.cu_type = VIRTIO_CCW_CU_TYPE; > sch->id.cu_model = vdev->device_id; > > + dev->revision = -1; > + > /* Set default feature bits that are offered by the host. */ > dev->host_features = 0; > virtio_add_feature(&dev->host_features, VIRTIO_F_NOTI...

...t;ccw_cb = virtio_ccw_cb; > + sch->disable_cb = virtio_sch_disable_cb; > > /* Build senseid data. */ > memset(&sch->id, 0, sizeof(SenseId)); > @@ -747,6 +797,8 @@ static int virtio_ccw_device_init(VirtioCcwDevice *dev, VirtIODevice *vdev) > sch->id.cu_type = VIRTIO_CCW_CU_TYPE; > sch->id.cu_model = vdev->device_id; > > + dev->revision = -1; > + > /* Set default feature bits that are offered by the host. */ > dev->host_features = 0; > virtio_add_feature(&dev->host_features, VIRTIO_F_NOTI...

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

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

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

...); + if (vcdev->revision == 0) + goto out_free; + /* Read second half of the feature bits from the host. */ features->index = 1; ccw->cmd_code = CCW_CMD_READ_FEAT; @@ -1182,9 +1185,13 @@ static int virtio_ccw_online(struct ccw_device *cdev) vcdev->vdev.id.vendor = cdev->id.cu_type; vcdev->vdev.id.device = cdev->id.cu_model; - ret = virtio_ccw_set_transport_rev(vcdev); - if (ret) - goto out_free; + if (virtio_device_is_legacy_only(vcdev->vdev.id)) { + ret = virtio_ccw_set_transport_rev(vcdev); + if (ret) + goto out_free; + } else { + vcdev->revision = 0;...