From: Parav Pandit <parav@mellanox.com>
To: Jason Wang <jasowang@redhat.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"intel-gfx@lists.freedesktop.org"
<intel-gfx@lists.freedesktop.org>,
"intel-gvt-dev@lists.freedesktop.org"
<intel-gvt-dev@lists.freedesktop.org>,
"kwankhede@nvidia.com" <kwankhede@nvidia.com>,
"alex.williamson@redhat.com" <alex.williamson@redhat.com>,
"mst@redhat.com" <mst@redhat.com>,
"tiwei.bie@intel.com" <tiwei.bie@intel.com>
Cc: "virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"cohuck@redhat.com" <cohuck@redhat.com>,
"maxime.coquelin@redhat.com" <maxime.coquelin@redhat.com>,
"cunming.liang@intel.com" <cunming.liang@intel.com>,
"zhihong.wang@intel.com" <zhihong.wang@intel.com>,
"rob.miller@broadcom.com" <rob.miller@broadcom.com>,
"xiao.w.wang@intel.com" <xiao.w.wang@intel.com>,
"haotian.wang@sifive.com" <haotian.wang@sifive.com>,
"zhenyuw@linux.intel.com" <zhenyuw@linux.intel.com>,
"zhi.a.wang@intel.com" <zhi.a.wang@intel.com>,
"jani.nikula@linux.intel.com" <jani.nikula@linux.intel.com>,
"joonas.lahtinen@linux.intel.com"
<joonas.lahtinen@linux.intel.com>,
"rodrigo.vivi@intel.com" <rodrigo.vivi@intel.com>,
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"farman@linux.ibm.com" <farman@linux.ibm.com>,
"pasic@linux.ibm.com" <pasic@linux.ibm.com>,
"sebott@linux.ibm.com" <sebott@linux.ibm.com>,
"oberpar@linux.ibm.com" <oberpar@linux.ibm.com>,
"heiko.carstens@de.ibm.com" <heiko.carstens@de.ibm.com>,
"gor@linux.ibm.com" <gor@linux.ibm.com>,
"borntraeger@de.ibm.com" <borntraeger@de.ibm.com>,
"akrowiak@linux.ibm.com" <akrowiak@linux.ibm.com>,
"freude@linux.ibm.com" <freude@linux.ibm.com>,
"lingshan.zhu@intel.com" <lingshan.zhu@intel.com>,
Ido Shamay <idos@mellanox.com>,
"eperezma@redhat.com" <eperezma@redhat.com>,
"lulu@redhat.com" <lulu@redhat.com>,
"christophe.de.dinechin@gmail.com"
<christophe.de.dinechin@gmail.com>,
"kevin.tian@intel.com" <kevin.tian@intel.com>,
"stefanha@redhat.com" <stefanha@redhat.com>
Subject: RE: [PATCH V5 1/6] mdev: class id support
Date: Wed, 23 Oct 2019 16:30:20 +0000 [thread overview]
Message-ID: <AM0PR05MB4866EA498A1C40A49FCB35E3D16B0@AM0PR05MB4866.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <20191023130752.18980-2-jasowang@redhat.com>
> -----Original Message-----
> From: Jason Wang <jasowang@redhat.com>
> Sent: Wednesday, October 23, 2019 8:08 AM
> To: kvm@vger.kernel.org; linux-s390@vger.kernel.org; linux-
> kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; intel-
> gfx@lists.freedesktop.org; intel-gvt-dev@lists.freedesktop.org;
> kwankhede@nvidia.com; alex.williamson@redhat.com; mst@redhat.com;
> tiwei.bie@intel.com
> Cc: virtualization@lists.linux-foundation.org; netdev@vger.kernel.org;
> cohuck@redhat.com; maxime.coquelin@redhat.com;
> cunming.liang@intel.com; zhihong.wang@intel.com;
> rob.miller@broadcom.com; xiao.w.wang@intel.com;
> haotian.wang@sifive.com; zhenyuw@linux.intel.com; zhi.a.wang@intel.com;
> jani.nikula@linux.intel.com; joonas.lahtinen@linux.intel.com;
> rodrigo.vivi@intel.com; airlied@linux.ie; daniel@ffwll.ch;
> farman@linux.ibm.com; pasic@linux.ibm.com; sebott@linux.ibm.com;
> oberpar@linux.ibm.com; heiko.carstens@de.ibm.com; gor@linux.ibm.com;
> borntraeger@de.ibm.com; akrowiak@linux.ibm.com; freude@linux.ibm.com;
> lingshan.zhu@intel.com; Ido Shamay <idos@mellanox.com>;
> eperezma@redhat.com; lulu@redhat.com; Parav Pandit
> <parav@mellanox.com>; christophe.de.dinechin@gmail.com;
> kevin.tian@intel.com; stefanha@redhat.com; Jason Wang
> <jasowang@redhat.com>
> Subject: [PATCH V5 1/6] mdev: class id support
>
> Mdev bus only supports vfio driver right now, so it doesn't implement match
> method. But in the future, we may add drivers other than vfio, the first driver
> could be virtio-mdev. This means we need to add device class id support in bus
> match method to pair the mdev device and mdev driver correctly.
>
> So this patch adds id_table to mdev_driver and class_id for mdev device with
> the match method for mdev bus.
>
> Signed-off-by: Jason Wang <jasowang@redhat.com>
> ---
> .../driver-api/vfio-mediated-device.rst | 5 +++++
> drivers/gpu/drm/i915/gvt/kvmgt.c | 1 +
> drivers/s390/cio/vfio_ccw_ops.c | 1 +
> drivers/s390/crypto/vfio_ap_ops.c | 1 +
> drivers/vfio/mdev/mdev_core.c | 18 +++++++++++++++
> drivers/vfio/mdev/mdev_driver.c | 22 +++++++++++++++++++
> drivers/vfio/mdev/mdev_private.h | 1 +
> drivers/vfio/mdev/vfio_mdev.c | 6 +++++
> include/linux/mdev.h | 8 +++++++
> include/linux/mod_devicetable.h | 8 +++++++
> samples/vfio-mdev/mbochs.c | 1 +
> samples/vfio-mdev/mdpy.c | 1 +
> samples/vfio-mdev/mtty.c | 1 +
> 13 files changed, 74 insertions(+)
>
> diff --git a/Documentation/driver-api/vfio-mediated-device.rst
> b/Documentation/driver-api/vfio-mediated-device.rst
> index 25eb7d5b834b..6709413bee29 100644
> --- a/Documentation/driver-api/vfio-mediated-device.rst
> +++ b/Documentation/driver-api/vfio-mediated-device.rst
> @@ -102,12 +102,14 @@ structure to represent a mediated device's driver::
> * @probe: called when new device created
> * @remove: called when device removed
> * @driver: device driver structure
> + * @id_table: the ids serviced by this driver
> */
> struct mdev_driver {
> const char *name;
> int (*probe) (struct device *dev);
> void (*remove) (struct device *dev);
> struct device_driver driver;
> + const struct mdev_class_id *id_table;
> };
>
> A mediated bus driver for mdev should use this structure in the function calls
> @@ -170,6 +172,9 @@ that a driver should use to unregister itself with the
> mdev core driver::
>
> extern void mdev_unregister_device(struct device *dev);
>
> +It is also required to specify the class_id in create() callback through::
> +
> + int mdev_set_class(struct mdev_device *mdev, u16 id);
>
> Mediated Device Management Interface Through sysfs
> ==================================================
> diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c
> b/drivers/gpu/drm/i915/gvt/kvmgt.c
> index 343d79c1cb7e..6420f0dbd31b 100644
> --- a/drivers/gpu/drm/i915/gvt/kvmgt.c
> +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
> @@ -678,6 +678,7 @@ static int intel_vgpu_create(struct kobject *kobj, struct
> mdev_device *mdev)
> dev_name(mdev_dev(mdev)));
> ret = 0;
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> out:
> return ret;
> }
> diff --git a/drivers/s390/cio/vfio_ccw_ops.c b/drivers/s390/cio/vfio_ccw_ops.c
> index f0d71ab77c50..cf2c013ae32f 100644
> --- a/drivers/s390/cio/vfio_ccw_ops.c
> +++ b/drivers/s390/cio/vfio_ccw_ops.c
> @@ -129,6 +129,7 @@ static int vfio_ccw_mdev_create(struct kobject *kobj,
> struct mdev_device *mdev)
> private->sch->schid.ssid,
> private->sch->schid.sch_no);
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> diff --git a/drivers/s390/crypto/vfio_ap_ops.c
> b/drivers/s390/crypto/vfio_ap_ops.c
> index 5c0f53c6dde7..07c31070afeb 100644
> --- a/drivers/s390/crypto/vfio_ap_ops.c
> +++ b/drivers/s390/crypto/vfio_ap_ops.c
> @@ -343,6 +343,7 @@ static int vfio_ap_mdev_create(struct kobject *kobj,
> struct mdev_device *mdev)
> list_add(&matrix_mdev->node, &matrix_dev->mdev_list);
> mutex_unlock(&matrix_dev->lock);
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> diff --git a/drivers/vfio/mdev/mdev_core.c b/drivers/vfio/mdev/mdev_core.c
> index b558d4cfd082..3a9c52d71b4e 100644
> --- a/drivers/vfio/mdev/mdev_core.c
> +++ b/drivers/vfio/mdev/mdev_core.c
> @@ -45,6 +45,16 @@ void mdev_set_drvdata(struct mdev_device *mdev, void
> *data) } EXPORT_SYMBOL(mdev_set_drvdata);
>
> +/* Specify the class for the mdev device, this must be called during
> + * create() callback.
> + */
> +void mdev_set_class(struct mdev_device *mdev, u16 id) {
> + WARN_ON(mdev->class_id);
> + mdev->class_id = id;
> +}
> +EXPORT_SYMBOL(mdev_set_class);
> +
> struct device *mdev_dev(struct mdev_device *mdev) {
> return &mdev->dev;
> @@ -135,6 +145,7 @@ static int mdev_device_remove_cb(struct device *dev,
> void *data)
> * mdev_register_device : Register a device
> * @dev: device structure representing parent device.
> * @ops: Parent device operation structure to be registered.
> + * @id: class id.
> *
> * Add device to list of registered parent devices.
> * Returns a negative value on error, otherwise 0.
> @@ -324,6 +335,13 @@ int mdev_device_create(struct kobject *kobj,
> if (ret)
> goto ops_create_fail;
>
> + if (!mdev->class_id) {
> + ret = -EINVAL;
> + WARN(1, "class id must be specified for device %s\n",
> + dev_name(dev));
> + goto add_fail;
> + }
> +
> ret = device_add(&mdev->dev);
> if (ret)
> goto add_fail;
> diff --git a/drivers/vfio/mdev/mdev_driver.c
> b/drivers/vfio/mdev/mdev_driver.c index 0d3223aee20b..319d886ffaf7 100644
> --- a/drivers/vfio/mdev/mdev_driver.c
> +++ b/drivers/vfio/mdev/mdev_driver.c
> @@ -69,8 +69,30 @@ static int mdev_remove(struct device *dev)
> return 0;
> }
>
> +static int mdev_match(struct device *dev, struct device_driver *drv) {
> + unsigned int i;
> + struct mdev_device *mdev = to_mdev_device(dev);
> + struct mdev_driver *mdrv = to_mdev_driver(drv);
> + const struct mdev_class_id *ids = mdrv->id_table;
> +
> + for (i = 0; ids[i].id; i++)
> + if (ids[i].id == mdev->class_id)
> + return 1;
> + return 0;
> +}
> +
> +static int mdev_uevent(struct device *dev, struct kobj_uevent_env *env)
> +{
> + struct mdev_device *mdev = to_mdev_device(dev);
> +
> + return add_uevent_var(env, "MODALIAS=mdev:c%02X", mdev-
> >class_id); }
> +
> struct bus_type mdev_bus_type = {
> .name = "mdev",
> + .match = mdev_match,
> + .uevent = mdev_uevent,
> .probe = mdev_probe,
> .remove = mdev_remove,
> };
> diff --git a/drivers/vfio/mdev/mdev_private.h
> b/drivers/vfio/mdev/mdev_private.h
> index 7d922950caaf..c65f436c1869 100644
> --- a/drivers/vfio/mdev/mdev_private.h
> +++ b/drivers/vfio/mdev/mdev_private.h
> @@ -33,6 +33,7 @@ struct mdev_device {
> struct kobject *type_kobj;
> struct device *iommu_device;
> bool active;
> + u16 class_id;
> };
>
> #define to_mdev_device(dev) container_of(dev, struct mdev_device, dev)
> diff --git a/drivers/vfio/mdev/vfio_mdev.c b/drivers/vfio/mdev/vfio_mdev.c
> index 30964a4e0a28..7b24ee9cb8dd 100644
> --- a/drivers/vfio/mdev/vfio_mdev.c
> +++ b/drivers/vfio/mdev/vfio_mdev.c
> @@ -120,10 +120,16 @@ static void vfio_mdev_remove(struct device *dev)
> vfio_del_group_dev(dev);
> }
>
> +static const struct mdev_class_id id_table[] = {
> + { MDEV_CLASS_ID_VFIO },
> + { 0 },
> +};
> +
> static struct mdev_driver vfio_mdev_driver = {
> .name = "vfio_mdev",
> .probe = vfio_mdev_probe,
> .remove = vfio_mdev_remove,
> + .id_table = id_table,
> };
>
> static int __init vfio_mdev_init(void)
> diff --git a/include/linux/mdev.h b/include/linux/mdev.h index
> 0ce30ca78db0..78b69d09eb54 100644
> --- a/include/linux/mdev.h
> +++ b/include/linux/mdev.h
> @@ -118,6 +118,7 @@ struct mdev_type_attribute mdev_type_attr_##_name
> = \
> * @probe: called when new device created
> * @remove: called when device removed
> * @driver: device driver structure
> + * @id_table: the ids serviced by this driver
> *
> **/
> struct mdev_driver {
> @@ -125,6 +126,7 @@ struct mdev_driver {
> int (*probe)(struct device *dev);
> void (*remove)(struct device *dev);
> struct device_driver driver;
> + const struct mdev_class_id *id_table;
> };
>
> #define to_mdev_driver(drv) container_of(drv, struct mdev_driver, driver)
> @@ -132,6 +134,7 @@ struct mdev_driver { void *mdev_get_drvdata(struct
> mdev_device *mdev); void mdev_set_drvdata(struct mdev_device *mdev, void
> *data); const guid_t *mdev_uuid(struct mdev_device *mdev);
> +void mdev_set_class(struct mdev_device *mdev, u16 id);
>
> extern struct bus_type mdev_bus_type;
>
> @@ -145,4 +148,9 @@ struct device *mdev_parent_dev(struct mdev_device
> *mdev); struct device *mdev_dev(struct mdev_device *mdev); struct
> mdev_device *mdev_from_dev(struct device *dev);
>
> +enum {
> + MDEV_CLASS_ID_VFIO = 1,
> + /* New entries must be added here */
> +};
> +
> #endif /* MDEV_H */
> diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
> index 5714fd35a83c..f32c6e44fb1a 100644
> --- a/include/linux/mod_devicetable.h
> +++ b/include/linux/mod_devicetable.h
> @@ -821,4 +821,12 @@ struct wmi_device_id {
> const void *context;
> };
>
> +/**
> + * struct mdev_class_id - MDEV device class identifier
> + * @id: Used to identify a specific class of device, e.g vfio-mdev device.
> + */
> +struct mdev_class_id {
> + __u16 id;
> +};
> +
> #endif /* LINUX_MOD_DEVICETABLE_H */
> diff --git a/samples/vfio-mdev/mbochs.c b/samples/vfio-mdev/mbochs.c index
> ac5c8c17b1ff..115bc5074656 100644
> --- a/samples/vfio-mdev/mbochs.c
> +++ b/samples/vfio-mdev/mbochs.c
> @@ -561,6 +561,7 @@ static int mbochs_create(struct kobject *kobj, struct
> mdev_device *mdev)
> mbochs_reset(mdev);
>
> mbochs_used_mbytes += type->mbytes;
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
>
> err_mem:
> diff --git a/samples/vfio-mdev/mdpy.c b/samples/vfio-mdev/mdpy.c index
> cc86bf6566e4..665614574d50 100644
> --- a/samples/vfio-mdev/mdpy.c
> +++ b/samples/vfio-mdev/mdpy.c
> @@ -269,6 +269,7 @@ static int mdpy_create(struct kobject *kobj, struct
> mdev_device *mdev)
> mdpy_reset(mdev);
>
> mdpy_count++;
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> diff --git a/samples/vfio-mdev/mtty.c b/samples/vfio-mdev/mtty.c index
> ce84a300a4da..90da12ff7fd9 100644
> --- a/samples/vfio-mdev/mtty.c
> +++ b/samples/vfio-mdev/mtty.c
> @@ -755,6 +755,7 @@ static int mtty_create(struct kobject *kobj, struct
> mdev_device *mdev)
> list_add(&mdev_state->next, &mdev_devices_list);
> mutex_unlock(&mdev_list_lock);
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> --
> 2.19.1
Reviewed-by: Parav Pandit <parav@mellanox.com>
WARNING: multiple messages have this Message-ID (diff)
From: Parav Pandit <parav@mellanox.com>
To: Jason Wang <jasowang@redhat.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"intel-gfx@lists.freedesktop.org"
<intel-gfx@lists.freedesktop.org>,
"intel-gvt-dev@lists.freedesktop.org"
<intel-gvt-dev@lists.freedesktop.org>,
"kwankhede@nvidia.com" <kwankhede@nvidia.com>,
"alex.williamson@redhat.com" <alex.williamson@redhat.com>,
"mst@redhat.com" <mst@redhat.com>,
"tiwei.bie@intel.com" <tiwei.bie@intel.com>
Cc: "virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"cohuck@redhat.com" <cohuck@redhat.com>,
"maxime.coquelin@redhat.com" <maxime.coquelin@redhat.com>,
"cunming.liang@intel.com" <cunming.liang@intel.com>,
"zhihong.wang@intel.com" <zhihong.wang@intel.com>,
"rob.miller@broadcom.com" <rob.miller@broadcom.com>,
"xiao.w.wang@intel.com" <xiao.w.wang@intel.com>,
"haotian.wang@sifive.com" <haotian.wang@sifive.com>,
"zhenyuw@linux.intel.com" <zhenyuw@linux.intel.com>,
"zhi.a.wang@intel.com" <zhi.a.wang@intel.com>,
"jani.nikula@linux.intel.com" <jani.nikula@linux.intel.com>,
"joonas.lahtinen@linux.intel.com"
<joonas.lahtinen@linux.intel.com>,
"rodrigo.vivi@intel.com" <rodrigo.vivi@intel.com>
Subject: RE: [PATCH V5 1/6] mdev: class id support
Date: Wed, 23 Oct 2019 16:30:20 +0000 [thread overview]
Message-ID: <AM0PR05MB4866EA498A1C40A49FCB35E3D16B0@AM0PR05MB4866.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <20191023130752.18980-2-jasowang@redhat.com>
> -----Original Message-----
> From: Jason Wang <jasowang@redhat.com>
> Sent: Wednesday, October 23, 2019 8:08 AM
> To: kvm@vger.kernel.org; linux-s390@vger.kernel.org; linux-
> kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; intel-
> gfx@lists.freedesktop.org; intel-gvt-dev@lists.freedesktop.org;
> kwankhede@nvidia.com; alex.williamson@redhat.com; mst@redhat.com;
> tiwei.bie@intel.com
> Cc: virtualization@lists.linux-foundation.org; netdev@vger.kernel.org;
> cohuck@redhat.com; maxime.coquelin@redhat.com;
> cunming.liang@intel.com; zhihong.wang@intel.com;
> rob.miller@broadcom.com; xiao.w.wang@intel.com;
> haotian.wang@sifive.com; zhenyuw@linux.intel.com; zhi.a.wang@intel.com;
> jani.nikula@linux.intel.com; joonas.lahtinen@linux.intel.com;
> rodrigo.vivi@intel.com; airlied@linux.ie; daniel@ffwll.ch;
> farman@linux.ibm.com; pasic@linux.ibm.com; sebott@linux.ibm.com;
> oberpar@linux.ibm.com; heiko.carstens@de.ibm.com; gor@linux.ibm.com;
> borntraeger@de.ibm.com; akrowiak@linux.ibm.com; freude@linux.ibm.com;
> lingshan.zhu@intel.com; Ido Shamay <idos@mellanox.com>;
> eperezma@redhat.com; lulu@redhat.com; Parav Pandit
> <parav@mellanox.com>; christophe.de.dinechin@gmail.com;
> kevin.tian@intel.com; stefanha@redhat.com; Jason Wang
> <jasowang@redhat.com>
> Subject: [PATCH V5 1/6] mdev: class id support
>
> Mdev bus only supports vfio driver right now, so it doesn't implement match
> method. But in the future, we may add drivers other than vfio, the first driver
> could be virtio-mdev. This means we need to add device class id support in bus
> match method to pair the mdev device and mdev driver correctly.
>
> So this patch adds id_table to mdev_driver and class_id for mdev device with
> the match method for mdev bus.
>
> Signed-off-by: Jason Wang <jasowang@redhat.com>
> ---
> .../driver-api/vfio-mediated-device.rst | 5 +++++
> drivers/gpu/drm/i915/gvt/kvmgt.c | 1 +
> drivers/s390/cio/vfio_ccw_ops.c | 1 +
> drivers/s390/crypto/vfio_ap_ops.c | 1 +
> drivers/vfio/mdev/mdev_core.c | 18 +++++++++++++++
> drivers/vfio/mdev/mdev_driver.c | 22 +++++++++++++++++++
> drivers/vfio/mdev/mdev_private.h | 1 +
> drivers/vfio/mdev/vfio_mdev.c | 6 +++++
> include/linux/mdev.h | 8 +++++++
> include/linux/mod_devicetable.h | 8 +++++++
> samples/vfio-mdev/mbochs.c | 1 +
> samples/vfio-mdev/mdpy.c | 1 +
> samples/vfio-mdev/mtty.c | 1 +
> 13 files changed, 74 insertions(+)
>
> diff --git a/Documentation/driver-api/vfio-mediated-device.rst
> b/Documentation/driver-api/vfio-mediated-device.rst
> index 25eb7d5b834b..6709413bee29 100644
> --- a/Documentation/driver-api/vfio-mediated-device.rst
> +++ b/Documentation/driver-api/vfio-mediated-device.rst
> @@ -102,12 +102,14 @@ structure to represent a mediated device's driver::
> * @probe: called when new device created
> * @remove: called when device removed
> * @driver: device driver structure
> + * @id_table: the ids serviced by this driver
> */
> struct mdev_driver {
> const char *name;
> int (*probe) (struct device *dev);
> void (*remove) (struct device *dev);
> struct device_driver driver;
> + const struct mdev_class_id *id_table;
> };
>
> A mediated bus driver for mdev should use this structure in the function calls
> @@ -170,6 +172,9 @@ that a driver should use to unregister itself with the
> mdev core driver::
>
> extern void mdev_unregister_device(struct device *dev);
>
> +It is also required to specify the class_id in create() callback through::
> +
> + int mdev_set_class(struct mdev_device *mdev, u16 id);
>
> Mediated Device Management Interface Through sysfs
> ==================================================
> diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c
> b/drivers/gpu/drm/i915/gvt/kvmgt.c
> index 343d79c1cb7e..6420f0dbd31b 100644
> --- a/drivers/gpu/drm/i915/gvt/kvmgt.c
> +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
> @@ -678,6 +678,7 @@ static int intel_vgpu_create(struct kobject *kobj, struct
> mdev_device *mdev)
> dev_name(mdev_dev(mdev)));
> ret = 0;
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> out:
> return ret;
> }
> diff --git a/drivers/s390/cio/vfio_ccw_ops.c b/drivers/s390/cio/vfio_ccw_ops.c
> index f0d71ab77c50..cf2c013ae32f 100644
> --- a/drivers/s390/cio/vfio_ccw_ops.c
> +++ b/drivers/s390/cio/vfio_ccw_ops.c
> @@ -129,6 +129,7 @@ static int vfio_ccw_mdev_create(struct kobject *kobj,
> struct mdev_device *mdev)
> private->sch->schid.ssid,
> private->sch->schid.sch_no);
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> diff --git a/drivers/s390/crypto/vfio_ap_ops.c
> b/drivers/s390/crypto/vfio_ap_ops.c
> index 5c0f53c6dde7..07c31070afeb 100644
> --- a/drivers/s390/crypto/vfio_ap_ops.c
> +++ b/drivers/s390/crypto/vfio_ap_ops.c
> @@ -343,6 +343,7 @@ static int vfio_ap_mdev_create(struct kobject *kobj,
> struct mdev_device *mdev)
> list_add(&matrix_mdev->node, &matrix_dev->mdev_list);
> mutex_unlock(&matrix_dev->lock);
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> diff --git a/drivers/vfio/mdev/mdev_core.c b/drivers/vfio/mdev/mdev_core.c
> index b558d4cfd082..3a9c52d71b4e 100644
> --- a/drivers/vfio/mdev/mdev_core.c
> +++ b/drivers/vfio/mdev/mdev_core.c
> @@ -45,6 +45,16 @@ void mdev_set_drvdata(struct mdev_device *mdev, void
> *data) } EXPORT_SYMBOL(mdev_set_drvdata);
>
> +/* Specify the class for the mdev device, this must be called during
> + * create() callback.
> + */
> +void mdev_set_class(struct mdev_device *mdev, u16 id) {
> + WARN_ON(mdev->class_id);
> + mdev->class_id = id;
> +}
> +EXPORT_SYMBOL(mdev_set_class);
> +
> struct device *mdev_dev(struct mdev_device *mdev) {
> return &mdev->dev;
> @@ -135,6 +145,7 @@ static int mdev_device_remove_cb(struct device *dev,
> void *data)
> * mdev_register_device : Register a device
> * @dev: device structure representing parent device.
> * @ops: Parent device operation structure to be registered.
> + * @id: class id.
> *
> * Add device to list of registered parent devices.
> * Returns a negative value on error, otherwise 0.
> @@ -324,6 +335,13 @@ int mdev_device_create(struct kobject *kobj,
> if (ret)
> goto ops_create_fail;
>
> + if (!mdev->class_id) {
> + ret = -EINVAL;
> + WARN(1, "class id must be specified for device %s\n",
> + dev_name(dev));
> + goto add_fail;
> + }
> +
> ret = device_add(&mdev->dev);
> if (ret)
> goto add_fail;
> diff --git a/drivers/vfio/mdev/mdev_driver.c
> b/drivers/vfio/mdev/mdev_driver.c index 0d3223aee20b..319d886ffaf7 100644
> --- a/drivers/vfio/mdev/mdev_driver.c
> +++ b/drivers/vfio/mdev/mdev_driver.c
> @@ -69,8 +69,30 @@ static int mdev_remove(struct device *dev)
> return 0;
> }
>
> +static int mdev_match(struct device *dev, struct device_driver *drv) {
> + unsigned int i;
> + struct mdev_device *mdev = to_mdev_device(dev);
> + struct mdev_driver *mdrv = to_mdev_driver(drv);
> + const struct mdev_class_id *ids = mdrv->id_table;
> +
> + for (i = 0; ids[i].id; i++)
> + if (ids[i].id == mdev->class_id)
> + return 1;
> + return 0;
> +}
> +
> +static int mdev_uevent(struct device *dev, struct kobj_uevent_env *env)
> +{
> + struct mdev_device *mdev = to_mdev_device(dev);
> +
> + return add_uevent_var(env, "MODALIAS=mdev:c%02X", mdev-
> >class_id); }
> +
> struct bus_type mdev_bus_type = {
> .name = "mdev",
> + .match = mdev_match,
> + .uevent = mdev_uevent,
> .probe = mdev_probe,
> .remove = mdev_remove,
> };
> diff --git a/drivers/vfio/mdev/mdev_private.h
> b/drivers/vfio/mdev/mdev_private.h
> index 7d922950caaf..c65f436c1869 100644
> --- a/drivers/vfio/mdev/mdev_private.h
> +++ b/drivers/vfio/mdev/mdev_private.h
> @@ -33,6 +33,7 @@ struct mdev_device {
> struct kobject *type_kobj;
> struct device *iommu_device;
> bool active;
> + u16 class_id;
> };
>
> #define to_mdev_device(dev) container_of(dev, struct mdev_device, dev)
> diff --git a/drivers/vfio/mdev/vfio_mdev.c b/drivers/vfio/mdev/vfio_mdev.c
> index 30964a4e0a28..7b24ee9cb8dd 100644
> --- a/drivers/vfio/mdev/vfio_mdev.c
> +++ b/drivers/vfio/mdev/vfio_mdev.c
> @@ -120,10 +120,16 @@ static void vfio_mdev_remove(struct device *dev)
> vfio_del_group_dev(dev);
> }
>
> +static const struct mdev_class_id id_table[] = {
> + { MDEV_CLASS_ID_VFIO },
> + { 0 },
> +};
> +
> static struct mdev_driver vfio_mdev_driver = {
> .name = "vfio_mdev",
> .probe = vfio_mdev_probe,
> .remove = vfio_mdev_remove,
> + .id_table = id_table,
> };
>
> static int __init vfio_mdev_init(void)
> diff --git a/include/linux/mdev.h b/include/linux/mdev.h index
> 0ce30ca78db0..78b69d09eb54 100644
> --- a/include/linux/mdev.h
> +++ b/include/linux/mdev.h
> @@ -118,6 +118,7 @@ struct mdev_type_attribute mdev_type_attr_##_name
> = \
> * @probe: called when new device created
> * @remove: called when device removed
> * @driver: device driver structure
> + * @id_table: the ids serviced by this driver
> *
> **/
> struct mdev_driver {
> @@ -125,6 +126,7 @@ struct mdev_driver {
> int (*probe)(struct device *dev);
> void (*remove)(struct device *dev);
> struct device_driver driver;
> + const struct mdev_class_id *id_table;
> };
>
> #define to_mdev_driver(drv) container_of(drv, struct mdev_driver, driver)
> @@ -132,6 +134,7 @@ struct mdev_driver { void *mdev_get_drvdata(struct
> mdev_device *mdev); void mdev_set_drvdata(struct mdev_device *mdev, void
> *data); const guid_t *mdev_uuid(struct mdev_device *mdev);
> +void mdev_set_class(struct mdev_device *mdev, u16 id);
>
> extern struct bus_type mdev_bus_type;
>
> @@ -145,4 +148,9 @@ struct device *mdev_parent_dev(struct mdev_device
> *mdev); struct device *mdev_dev(struct mdev_device *mdev); struct
> mdev_device *mdev_from_dev(struct device *dev);
>
> +enum {
> + MDEV_CLASS_ID_VFIO = 1,
> + /* New entries must be added here */
> +};
> +
> #endif /* MDEV_H */
> diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
> index 5714fd35a83c..f32c6e44fb1a 100644
> --- a/include/linux/mod_devicetable.h
> +++ b/include/linux/mod_devicetable.h
> @@ -821,4 +821,12 @@ struct wmi_device_id {
> const void *context;
> };
>
> +/**
> + * struct mdev_class_id - MDEV device class identifier
> + * @id: Used to identify a specific class of device, e.g vfio-mdev device.
> + */
> +struct mdev_class_id {
> + __u16 id;
> +};
> +
> #endif /* LINUX_MOD_DEVICETABLE_H */
> diff --git a/samples/vfio-mdev/mbochs.c b/samples/vfio-mdev/mbochs.c index
> ac5c8c17b1ff..115bc5074656 100644
> --- a/samples/vfio-mdev/mbochs.c
> +++ b/samples/vfio-mdev/mbochs.c
> @@ -561,6 +561,7 @@ static int mbochs_create(struct kobject *kobj, struct
> mdev_device *mdev)
> mbochs_reset(mdev);
>
> mbochs_used_mbytes += type->mbytes;
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
>
> err_mem:
> diff --git a/samples/vfio-mdev/mdpy.c b/samples/vfio-mdev/mdpy.c index
> cc86bf6566e4..665614574d50 100644
> --- a/samples/vfio-mdev/mdpy.c
> +++ b/samples/vfio-mdev/mdpy.c
> @@ -269,6 +269,7 @@ static int mdpy_create(struct kobject *kobj, struct
> mdev_device *mdev)
> mdpy_reset(mdev);
>
> mdpy_count++;
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> diff --git a/samples/vfio-mdev/mtty.c b/samples/vfio-mdev/mtty.c index
> ce84a300a4da..90da12ff7fd9 100644
> --- a/samples/vfio-mdev/mtty.c
> +++ b/samples/vfio-mdev/mtty.c
> @@ -755,6 +755,7 @@ static int mtty_create(struct kobject *kobj, struct
> mdev_device *mdev)
> list_add(&mdev_state->next, &mdev_devices_list);
> mutex_unlock(&mdev_list_lock);
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> --
> 2.19.1
Reviewed-by: Parav Pandit <parav@mellanox.com>
WARNING: multiple messages have this Message-ID (diff)
From: Parav Pandit <parav@mellanox.com>
To: Jason Wang <jasowang@redhat.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"intel-gfx@lists.freedesktop.org"
<intel-gfx@lists.freedesktop.org>,
"intel-gvt-dev@lists.freedesktop.org"
<intel-gvt-dev@lists.freedesktop.org>,
"kwankhede@nvidia.com" <kwankhede@nvidia.com>,
"alex.williamson@redhat.com" <alex.williamson@redhat.com>,
"mst@redhat.com" <mst@redhat.com>,
"tiwei.bie@intel.com" <tiwei.bie@intel.com>
Cc: "christophe.de.dinechin@gmail.com"
<christophe.de.dinechin@gmail.com>,
"sebott@linux.ibm.com" <sebott@linux.ibm.com>,
"airlied@linux.ie" <airlied@linux.ie>,
"heiko.carstens@de.ibm.com" <heiko.carstens@de.ibm.com>,
"kevin.tian@intel.com" <kevin.tian@intel.com>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
"rob.miller@broadcom.com" <rob.miller@broadcom.com>,
"lulu@redhat.com" <lulu@redhat.com>,
"eperezma@redhat.com" <eperezma@redhat.com>,
"pasic@linux.ibm.com" <pasic@linux.ibm.com>,
"borntraeger@de.ibm.com" <borntraeger@de.ibm.com>,
"haotian.wang@sifive.com" <haotian.wang@sifive.com>,
"zhi.a.wang@intel.com" <zhi.a.wang@intel.com>,
"farman@linux.ibm.com" <farman@linux.ibm.com>,
Ido Shamay <idos@mellanox.com>,
"gor@linux.ibm.com" <gor@linux.ibm.com>,
"cunming.liang@intel.com" <cunming.liang@intel.com>,
"rodrigo.vivi@intel.com" <rodrigo.vivi@intel.com>,
"xiao.w.wang@intel.com" <xiao.w.wang@intel.com>,
"freude@linux.ibm.com" <freude@linux.ibm.com>,
"stefanha@redhat.com" <stefanha@redhat.com>,
"zhihong.wang@intel.com" <zhihong.wang@intel.com>,
"akrowiak@linux.ibm.com" <akrowiak@linux.ibm.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"cohuck@redhat.com" <cohuck@redhat.com>,
"oberpar@linux.ibm.com" <oberpar@linux.ibm.com>,
"maxime.coquelin@redhat.com" <maxime.coquelin@redhat.com>,
"lingshan.zhu@intel.com" <lingshan.zhu@intel.com>
Subject: RE: [PATCH V5 1/6] mdev: class id support
Date: Wed, 23 Oct 2019 16:30:20 +0000 [thread overview]
Message-ID: <AM0PR05MB4866EA498A1C40A49FCB35E3D16B0@AM0PR05MB4866.eurprd05.prod.outlook.com> (raw)
Message-ID: <20191023163020.08ocfxLmGm-jmlCPmDyo6oy6X7E8CaMPuBPX9_GzVcM@z> (raw)
In-Reply-To: <20191023130752.18980-2-jasowang@redhat.com>
> -----Original Message-----
> From: Jason Wang <jasowang@redhat.com>
> Sent: Wednesday, October 23, 2019 8:08 AM
> To: kvm@vger.kernel.org; linux-s390@vger.kernel.org; linux-
> kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; intel-
> gfx@lists.freedesktop.org; intel-gvt-dev@lists.freedesktop.org;
> kwankhede@nvidia.com; alex.williamson@redhat.com; mst@redhat.com;
> tiwei.bie@intel.com
> Cc: virtualization@lists.linux-foundation.org; netdev@vger.kernel.org;
> cohuck@redhat.com; maxime.coquelin@redhat.com;
> cunming.liang@intel.com; zhihong.wang@intel.com;
> rob.miller@broadcom.com; xiao.w.wang@intel.com;
> haotian.wang@sifive.com; zhenyuw@linux.intel.com; zhi.a.wang@intel.com;
> jani.nikula@linux.intel.com; joonas.lahtinen@linux.intel.com;
> rodrigo.vivi@intel.com; airlied@linux.ie; daniel@ffwll.ch;
> farman@linux.ibm.com; pasic@linux.ibm.com; sebott@linux.ibm.com;
> oberpar@linux.ibm.com; heiko.carstens@de.ibm.com; gor@linux.ibm.com;
> borntraeger@de.ibm.com; akrowiak@linux.ibm.com; freude@linux.ibm.com;
> lingshan.zhu@intel.com; Ido Shamay <idos@mellanox.com>;
> eperezma@redhat.com; lulu@redhat.com; Parav Pandit
> <parav@mellanox.com>; christophe.de.dinechin@gmail.com;
> kevin.tian@intel.com; stefanha@redhat.com; Jason Wang
> <jasowang@redhat.com>
> Subject: [PATCH V5 1/6] mdev: class id support
>
> Mdev bus only supports vfio driver right now, so it doesn't implement match
> method. But in the future, we may add drivers other than vfio, the first driver
> could be virtio-mdev. This means we need to add device class id support in bus
> match method to pair the mdev device and mdev driver correctly.
>
> So this patch adds id_table to mdev_driver and class_id for mdev device with
> the match method for mdev bus.
>
> Signed-off-by: Jason Wang <jasowang@redhat.com>
> ---
> .../driver-api/vfio-mediated-device.rst | 5 +++++
> drivers/gpu/drm/i915/gvt/kvmgt.c | 1 +
> drivers/s390/cio/vfio_ccw_ops.c | 1 +
> drivers/s390/crypto/vfio_ap_ops.c | 1 +
> drivers/vfio/mdev/mdev_core.c | 18 +++++++++++++++
> drivers/vfio/mdev/mdev_driver.c | 22 +++++++++++++++++++
> drivers/vfio/mdev/mdev_private.h | 1 +
> drivers/vfio/mdev/vfio_mdev.c | 6 +++++
> include/linux/mdev.h | 8 +++++++
> include/linux/mod_devicetable.h | 8 +++++++
> samples/vfio-mdev/mbochs.c | 1 +
> samples/vfio-mdev/mdpy.c | 1 +
> samples/vfio-mdev/mtty.c | 1 +
> 13 files changed, 74 insertions(+)
>
> diff --git a/Documentation/driver-api/vfio-mediated-device.rst
> b/Documentation/driver-api/vfio-mediated-device.rst
> index 25eb7d5b834b..6709413bee29 100644
> --- a/Documentation/driver-api/vfio-mediated-device.rst
> +++ b/Documentation/driver-api/vfio-mediated-device.rst
> @@ -102,12 +102,14 @@ structure to represent a mediated device's driver::
> * @probe: called when new device created
> * @remove: called when device removed
> * @driver: device driver structure
> + * @id_table: the ids serviced by this driver
> */
> struct mdev_driver {
> const char *name;
> int (*probe) (struct device *dev);
> void (*remove) (struct device *dev);
> struct device_driver driver;
> + const struct mdev_class_id *id_table;
> };
>
> A mediated bus driver for mdev should use this structure in the function calls
> @@ -170,6 +172,9 @@ that a driver should use to unregister itself with the
> mdev core driver::
>
> extern void mdev_unregister_device(struct device *dev);
>
> +It is also required to specify the class_id in create() callback through::
> +
> + int mdev_set_class(struct mdev_device *mdev, u16 id);
>
> Mediated Device Management Interface Through sysfs
> ==================================================
> diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c
> b/drivers/gpu/drm/i915/gvt/kvmgt.c
> index 343d79c1cb7e..6420f0dbd31b 100644
> --- a/drivers/gpu/drm/i915/gvt/kvmgt.c
> +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
> @@ -678,6 +678,7 @@ static int intel_vgpu_create(struct kobject *kobj, struct
> mdev_device *mdev)
> dev_name(mdev_dev(mdev)));
> ret = 0;
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> out:
> return ret;
> }
> diff --git a/drivers/s390/cio/vfio_ccw_ops.c b/drivers/s390/cio/vfio_ccw_ops.c
> index f0d71ab77c50..cf2c013ae32f 100644
> --- a/drivers/s390/cio/vfio_ccw_ops.c
> +++ b/drivers/s390/cio/vfio_ccw_ops.c
> @@ -129,6 +129,7 @@ static int vfio_ccw_mdev_create(struct kobject *kobj,
> struct mdev_device *mdev)
> private->sch->schid.ssid,
> private->sch->schid.sch_no);
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> diff --git a/drivers/s390/crypto/vfio_ap_ops.c
> b/drivers/s390/crypto/vfio_ap_ops.c
> index 5c0f53c6dde7..07c31070afeb 100644
> --- a/drivers/s390/crypto/vfio_ap_ops.c
> +++ b/drivers/s390/crypto/vfio_ap_ops.c
> @@ -343,6 +343,7 @@ static int vfio_ap_mdev_create(struct kobject *kobj,
> struct mdev_device *mdev)
> list_add(&matrix_mdev->node, &matrix_dev->mdev_list);
> mutex_unlock(&matrix_dev->lock);
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> diff --git a/drivers/vfio/mdev/mdev_core.c b/drivers/vfio/mdev/mdev_core.c
> index b558d4cfd082..3a9c52d71b4e 100644
> --- a/drivers/vfio/mdev/mdev_core.c
> +++ b/drivers/vfio/mdev/mdev_core.c
> @@ -45,6 +45,16 @@ void mdev_set_drvdata(struct mdev_device *mdev, void
> *data) } EXPORT_SYMBOL(mdev_set_drvdata);
>
> +/* Specify the class for the mdev device, this must be called during
> + * create() callback.
> + */
> +void mdev_set_class(struct mdev_device *mdev, u16 id) {
> + WARN_ON(mdev->class_id);
> + mdev->class_id = id;
> +}
> +EXPORT_SYMBOL(mdev_set_class);
> +
> struct device *mdev_dev(struct mdev_device *mdev) {
> return &mdev->dev;
> @@ -135,6 +145,7 @@ static int mdev_device_remove_cb(struct device *dev,
> void *data)
> * mdev_register_device : Register a device
> * @dev: device structure representing parent device.
> * @ops: Parent device operation structure to be registered.
> + * @id: class id.
> *
> * Add device to list of registered parent devices.
> * Returns a negative value on error, otherwise 0.
> @@ -324,6 +335,13 @@ int mdev_device_create(struct kobject *kobj,
> if (ret)
> goto ops_create_fail;
>
> + if (!mdev->class_id) {
> + ret = -EINVAL;
> + WARN(1, "class id must be specified for device %s\n",
> + dev_name(dev));
> + goto add_fail;
> + }
> +
> ret = device_add(&mdev->dev);
> if (ret)
> goto add_fail;
> diff --git a/drivers/vfio/mdev/mdev_driver.c
> b/drivers/vfio/mdev/mdev_driver.c index 0d3223aee20b..319d886ffaf7 100644
> --- a/drivers/vfio/mdev/mdev_driver.c
> +++ b/drivers/vfio/mdev/mdev_driver.c
> @@ -69,8 +69,30 @@ static int mdev_remove(struct device *dev)
> return 0;
> }
>
> +static int mdev_match(struct device *dev, struct device_driver *drv) {
> + unsigned int i;
> + struct mdev_device *mdev = to_mdev_device(dev);
> + struct mdev_driver *mdrv = to_mdev_driver(drv);
> + const struct mdev_class_id *ids = mdrv->id_table;
> +
> + for (i = 0; ids[i].id; i++)
> + if (ids[i].id == mdev->class_id)
> + return 1;
> + return 0;
> +}
> +
> +static int mdev_uevent(struct device *dev, struct kobj_uevent_env *env)
> +{
> + struct mdev_device *mdev = to_mdev_device(dev);
> +
> + return add_uevent_var(env, "MODALIAS=mdev:c%02X", mdev-
> >class_id); }
> +
> struct bus_type mdev_bus_type = {
> .name = "mdev",
> + .match = mdev_match,
> + .uevent = mdev_uevent,
> .probe = mdev_probe,
> .remove = mdev_remove,
> };
> diff --git a/drivers/vfio/mdev/mdev_private.h
> b/drivers/vfio/mdev/mdev_private.h
> index 7d922950caaf..c65f436c1869 100644
> --- a/drivers/vfio/mdev/mdev_private.h
> +++ b/drivers/vfio/mdev/mdev_private.h
> @@ -33,6 +33,7 @@ struct mdev_device {
> struct kobject *type_kobj;
> struct device *iommu_device;
> bool active;
> + u16 class_id;
> };
>
> #define to_mdev_device(dev) container_of(dev, struct mdev_device, dev)
> diff --git a/drivers/vfio/mdev/vfio_mdev.c b/drivers/vfio/mdev/vfio_mdev.c
> index 30964a4e0a28..7b24ee9cb8dd 100644
> --- a/drivers/vfio/mdev/vfio_mdev.c
> +++ b/drivers/vfio/mdev/vfio_mdev.c
> @@ -120,10 +120,16 @@ static void vfio_mdev_remove(struct device *dev)
> vfio_del_group_dev(dev);
> }
>
> +static const struct mdev_class_id id_table[] = {
> + { MDEV_CLASS_ID_VFIO },
> + { 0 },
> +};
> +
> static struct mdev_driver vfio_mdev_driver = {
> .name = "vfio_mdev",
> .probe = vfio_mdev_probe,
> .remove = vfio_mdev_remove,
> + .id_table = id_table,
> };
>
> static int __init vfio_mdev_init(void)
> diff --git a/include/linux/mdev.h b/include/linux/mdev.h index
> 0ce30ca78db0..78b69d09eb54 100644
> --- a/include/linux/mdev.h
> +++ b/include/linux/mdev.h
> @@ -118,6 +118,7 @@ struct mdev_type_attribute mdev_type_attr_##_name
> = \
> * @probe: called when new device created
> * @remove: called when device removed
> * @driver: device driver structure
> + * @id_table: the ids serviced by this driver
> *
> **/
> struct mdev_driver {
> @@ -125,6 +126,7 @@ struct mdev_driver {
> int (*probe)(struct device *dev);
> void (*remove)(struct device *dev);
> struct device_driver driver;
> + const struct mdev_class_id *id_table;
> };
>
> #define to_mdev_driver(drv) container_of(drv, struct mdev_driver, driver)
> @@ -132,6 +134,7 @@ struct mdev_driver { void *mdev_get_drvdata(struct
> mdev_device *mdev); void mdev_set_drvdata(struct mdev_device *mdev, void
> *data); const guid_t *mdev_uuid(struct mdev_device *mdev);
> +void mdev_set_class(struct mdev_device *mdev, u16 id);
>
> extern struct bus_type mdev_bus_type;
>
> @@ -145,4 +148,9 @@ struct device *mdev_parent_dev(struct mdev_device
> *mdev); struct device *mdev_dev(struct mdev_device *mdev); struct
> mdev_device *mdev_from_dev(struct device *dev);
>
> +enum {
> + MDEV_CLASS_ID_VFIO = 1,
> + /* New entries must be added here */
> +};
> +
> #endif /* MDEV_H */
> diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
> index 5714fd35a83c..f32c6e44fb1a 100644
> --- a/include/linux/mod_devicetable.h
> +++ b/include/linux/mod_devicetable.h
> @@ -821,4 +821,12 @@ struct wmi_device_id {
> const void *context;
> };
>
> +/**
> + * struct mdev_class_id - MDEV device class identifier
> + * @id: Used to identify a specific class of device, e.g vfio-mdev device.
> + */
> +struct mdev_class_id {
> + __u16 id;
> +};
> +
> #endif /* LINUX_MOD_DEVICETABLE_H */
> diff --git a/samples/vfio-mdev/mbochs.c b/samples/vfio-mdev/mbochs.c index
> ac5c8c17b1ff..115bc5074656 100644
> --- a/samples/vfio-mdev/mbochs.c
> +++ b/samples/vfio-mdev/mbochs.c
> @@ -561,6 +561,7 @@ static int mbochs_create(struct kobject *kobj, struct
> mdev_device *mdev)
> mbochs_reset(mdev);
>
> mbochs_used_mbytes += type->mbytes;
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
>
> err_mem:
> diff --git a/samples/vfio-mdev/mdpy.c b/samples/vfio-mdev/mdpy.c index
> cc86bf6566e4..665614574d50 100644
> --- a/samples/vfio-mdev/mdpy.c
> +++ b/samples/vfio-mdev/mdpy.c
> @@ -269,6 +269,7 @@ static int mdpy_create(struct kobject *kobj, struct
> mdev_device *mdev)
> mdpy_reset(mdev);
>
> mdpy_count++;
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> diff --git a/samples/vfio-mdev/mtty.c b/samples/vfio-mdev/mtty.c index
> ce84a300a4da..90da12ff7fd9 100644
> --- a/samples/vfio-mdev/mtty.c
> +++ b/samples/vfio-mdev/mtty.c
> @@ -755,6 +755,7 @@ static int mtty_create(struct kobject *kobj, struct
> mdev_device *mdev)
> list_add(&mdev_state->next, &mdev_devices_list);
> mutex_unlock(&mdev_list_lock);
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> --
> 2.19.1
Reviewed-by: Parav Pandit <parav@mellanox.com>
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WARNING: multiple messages have this Message-ID (diff)
From: Parav Pandit <parav@mellanox.com>
To: Jason Wang <jasowang@redhat.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"intel-gfx@lists.freedesktop.org"
<intel-gfx@lists.freedesktop.org>,
"intel-gvt-dev@lists.freedesktop.org"
<intel-gvt-dev@lists.freedesktop.org>,
"kwankhede@nvidia.com" <kwankhede@nvidia.com>,
"alex.williamson@redhat.com" <alex.williamson@redhat.com>,
"mst@redhat.com" <mst@redhat.com>,
"tiwei.bie@intel.com" <tiwei.bie@intel.com>
Cc: "christophe.de.dinechin@gmail.com"
<christophe.de.dinechin@gmail.com>,
"sebott@linux.ibm.com" <sebott@linux.ibm.com>,
"airlied@linux.ie" <airlied@linux.ie>,
"heiko.carstens@de.ibm.com" <heiko.carstens@de.ibm.com>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
"rob.miller@broadcom.com" <rob.miller@broadcom.com>,
"lulu@redhat.com" <lulu@redhat.com>,
"eperezma@redhat.com" <eperezma@redhat.com>,
"pasic@linux.ibm.com" <pasic@linux.ibm.com>,
"borntraeger@de.ibm.com" <borntraeger@de.ibm.com>,
"haotian.wang@sifive.com" <haotian.wang@sifive.com>,
"farman@linux.ibm.com" <farman@linux.ibm.com>,
Ido Shamay <idos@mellanox.com>,
"gor@linux.ibm.com" <gor@linux.ibm.com>,
"cunming.liang@intel.com" <cunming.liang@intel.com>,
"xiao.w.wang@intel.com" <xiao.w.wang@intel.com>,
"freude@linux.ibm.com" <freude@linux.ibm.com>,
"stefanha@redhat.com" <stefanha@redhat.com>,
"zhihong.wang@intel.com" <zhihong.wang@intel.com>,
"akrowiak@linux.ibm.com" <akrowiak@linux.ibm.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"cohuck@redhat.com" <cohuck@redhat.com>,
"oberpar@linux.ibm.com" <oberpar@linux.ibm.com>,
"maxime.coquelin@redhat.com" <maxime.coquelin@redhat.com>,
"lingshan.zhu@intel.com" <lingshan.zhu@intel.com>
Subject: Re: [Intel-gfx] [PATCH V5 1/6] mdev: class id support
Date: Wed, 23 Oct 2019 16:30:20 +0000 [thread overview]
Message-ID: <AM0PR05MB4866EA498A1C40A49FCB35E3D16B0@AM0PR05MB4866.eurprd05.prod.outlook.com> (raw)
Message-ID: <20191023163020.qNqzjmkLX2G6mrZrhh6xRmLpeDnU0vTeIokFcSsEMWg@z> (raw)
In-Reply-To: <20191023130752.18980-2-jasowang@redhat.com>
> -----Original Message-----
> From: Jason Wang <jasowang@redhat.com>
> Sent: Wednesday, October 23, 2019 8:08 AM
> To: kvm@vger.kernel.org; linux-s390@vger.kernel.org; linux-
> kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; intel-
> gfx@lists.freedesktop.org; intel-gvt-dev@lists.freedesktop.org;
> kwankhede@nvidia.com; alex.williamson@redhat.com; mst@redhat.com;
> tiwei.bie@intel.com
> Cc: virtualization@lists.linux-foundation.org; netdev@vger.kernel.org;
> cohuck@redhat.com; maxime.coquelin@redhat.com;
> cunming.liang@intel.com; zhihong.wang@intel.com;
> rob.miller@broadcom.com; xiao.w.wang@intel.com;
> haotian.wang@sifive.com; zhenyuw@linux.intel.com; zhi.a.wang@intel.com;
> jani.nikula@linux.intel.com; joonas.lahtinen@linux.intel.com;
> rodrigo.vivi@intel.com; airlied@linux.ie; daniel@ffwll.ch;
> farman@linux.ibm.com; pasic@linux.ibm.com; sebott@linux.ibm.com;
> oberpar@linux.ibm.com; heiko.carstens@de.ibm.com; gor@linux.ibm.com;
> borntraeger@de.ibm.com; akrowiak@linux.ibm.com; freude@linux.ibm.com;
> lingshan.zhu@intel.com; Ido Shamay <idos@mellanox.com>;
> eperezma@redhat.com; lulu@redhat.com; Parav Pandit
> <parav@mellanox.com>; christophe.de.dinechin@gmail.com;
> kevin.tian@intel.com; stefanha@redhat.com; Jason Wang
> <jasowang@redhat.com>
> Subject: [PATCH V5 1/6] mdev: class id support
>
> Mdev bus only supports vfio driver right now, so it doesn't implement match
> method. But in the future, we may add drivers other than vfio, the first driver
> could be virtio-mdev. This means we need to add device class id support in bus
> match method to pair the mdev device and mdev driver correctly.
>
> So this patch adds id_table to mdev_driver and class_id for mdev device with
> the match method for mdev bus.
>
> Signed-off-by: Jason Wang <jasowang@redhat.com>
> ---
> .../driver-api/vfio-mediated-device.rst | 5 +++++
> drivers/gpu/drm/i915/gvt/kvmgt.c | 1 +
> drivers/s390/cio/vfio_ccw_ops.c | 1 +
> drivers/s390/crypto/vfio_ap_ops.c | 1 +
> drivers/vfio/mdev/mdev_core.c | 18 +++++++++++++++
> drivers/vfio/mdev/mdev_driver.c | 22 +++++++++++++++++++
> drivers/vfio/mdev/mdev_private.h | 1 +
> drivers/vfio/mdev/vfio_mdev.c | 6 +++++
> include/linux/mdev.h | 8 +++++++
> include/linux/mod_devicetable.h | 8 +++++++
> samples/vfio-mdev/mbochs.c | 1 +
> samples/vfio-mdev/mdpy.c | 1 +
> samples/vfio-mdev/mtty.c | 1 +
> 13 files changed, 74 insertions(+)
>
> diff --git a/Documentation/driver-api/vfio-mediated-device.rst
> b/Documentation/driver-api/vfio-mediated-device.rst
> index 25eb7d5b834b..6709413bee29 100644
> --- a/Documentation/driver-api/vfio-mediated-device.rst
> +++ b/Documentation/driver-api/vfio-mediated-device.rst
> @@ -102,12 +102,14 @@ structure to represent a mediated device's driver::
> * @probe: called when new device created
> * @remove: called when device removed
> * @driver: device driver structure
> + * @id_table: the ids serviced by this driver
> */
> struct mdev_driver {
> const char *name;
> int (*probe) (struct device *dev);
> void (*remove) (struct device *dev);
> struct device_driver driver;
> + const struct mdev_class_id *id_table;
> };
>
> A mediated bus driver for mdev should use this structure in the function calls
> @@ -170,6 +172,9 @@ that a driver should use to unregister itself with the
> mdev core driver::
>
> extern void mdev_unregister_device(struct device *dev);
>
> +It is also required to specify the class_id in create() callback through::
> +
> + int mdev_set_class(struct mdev_device *mdev, u16 id);
>
> Mediated Device Management Interface Through sysfs
> ==================================================
> diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c
> b/drivers/gpu/drm/i915/gvt/kvmgt.c
> index 343d79c1cb7e..6420f0dbd31b 100644
> --- a/drivers/gpu/drm/i915/gvt/kvmgt.c
> +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
> @@ -678,6 +678,7 @@ static int intel_vgpu_create(struct kobject *kobj, struct
> mdev_device *mdev)
> dev_name(mdev_dev(mdev)));
> ret = 0;
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> out:
> return ret;
> }
> diff --git a/drivers/s390/cio/vfio_ccw_ops.c b/drivers/s390/cio/vfio_ccw_ops.c
> index f0d71ab77c50..cf2c013ae32f 100644
> --- a/drivers/s390/cio/vfio_ccw_ops.c
> +++ b/drivers/s390/cio/vfio_ccw_ops.c
> @@ -129,6 +129,7 @@ static int vfio_ccw_mdev_create(struct kobject *kobj,
> struct mdev_device *mdev)
> private->sch->schid.ssid,
> private->sch->schid.sch_no);
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> diff --git a/drivers/s390/crypto/vfio_ap_ops.c
> b/drivers/s390/crypto/vfio_ap_ops.c
> index 5c0f53c6dde7..07c31070afeb 100644
> --- a/drivers/s390/crypto/vfio_ap_ops.c
> +++ b/drivers/s390/crypto/vfio_ap_ops.c
> @@ -343,6 +343,7 @@ static int vfio_ap_mdev_create(struct kobject *kobj,
> struct mdev_device *mdev)
> list_add(&matrix_mdev->node, &matrix_dev->mdev_list);
> mutex_unlock(&matrix_dev->lock);
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> diff --git a/drivers/vfio/mdev/mdev_core.c b/drivers/vfio/mdev/mdev_core.c
> index b558d4cfd082..3a9c52d71b4e 100644
> --- a/drivers/vfio/mdev/mdev_core.c
> +++ b/drivers/vfio/mdev/mdev_core.c
> @@ -45,6 +45,16 @@ void mdev_set_drvdata(struct mdev_device *mdev, void
> *data) } EXPORT_SYMBOL(mdev_set_drvdata);
>
> +/* Specify the class for the mdev device, this must be called during
> + * create() callback.
> + */
> +void mdev_set_class(struct mdev_device *mdev, u16 id) {
> + WARN_ON(mdev->class_id);
> + mdev->class_id = id;
> +}
> +EXPORT_SYMBOL(mdev_set_class);
> +
> struct device *mdev_dev(struct mdev_device *mdev) {
> return &mdev->dev;
> @@ -135,6 +145,7 @@ static int mdev_device_remove_cb(struct device *dev,
> void *data)
> * mdev_register_device : Register a device
> * @dev: device structure representing parent device.
> * @ops: Parent device operation structure to be registered.
> + * @id: class id.
> *
> * Add device to list of registered parent devices.
> * Returns a negative value on error, otherwise 0.
> @@ -324,6 +335,13 @@ int mdev_device_create(struct kobject *kobj,
> if (ret)
> goto ops_create_fail;
>
> + if (!mdev->class_id) {
> + ret = -EINVAL;
> + WARN(1, "class id must be specified for device %s\n",
> + dev_name(dev));
> + goto add_fail;
> + }
> +
> ret = device_add(&mdev->dev);
> if (ret)
> goto add_fail;
> diff --git a/drivers/vfio/mdev/mdev_driver.c
> b/drivers/vfio/mdev/mdev_driver.c index 0d3223aee20b..319d886ffaf7 100644
> --- a/drivers/vfio/mdev/mdev_driver.c
> +++ b/drivers/vfio/mdev/mdev_driver.c
> @@ -69,8 +69,30 @@ static int mdev_remove(struct device *dev)
> return 0;
> }
>
> +static int mdev_match(struct device *dev, struct device_driver *drv) {
> + unsigned int i;
> + struct mdev_device *mdev = to_mdev_device(dev);
> + struct mdev_driver *mdrv = to_mdev_driver(drv);
> + const struct mdev_class_id *ids = mdrv->id_table;
> +
> + for (i = 0; ids[i].id; i++)
> + if (ids[i].id == mdev->class_id)
> + return 1;
> + return 0;
> +}
> +
> +static int mdev_uevent(struct device *dev, struct kobj_uevent_env *env)
> +{
> + struct mdev_device *mdev = to_mdev_device(dev);
> +
> + return add_uevent_var(env, "MODALIAS=mdev:c%02X", mdev-
> >class_id); }
> +
> struct bus_type mdev_bus_type = {
> .name = "mdev",
> + .match = mdev_match,
> + .uevent = mdev_uevent,
> .probe = mdev_probe,
> .remove = mdev_remove,
> };
> diff --git a/drivers/vfio/mdev/mdev_private.h
> b/drivers/vfio/mdev/mdev_private.h
> index 7d922950caaf..c65f436c1869 100644
> --- a/drivers/vfio/mdev/mdev_private.h
> +++ b/drivers/vfio/mdev/mdev_private.h
> @@ -33,6 +33,7 @@ struct mdev_device {
> struct kobject *type_kobj;
> struct device *iommu_device;
> bool active;
> + u16 class_id;
> };
>
> #define to_mdev_device(dev) container_of(dev, struct mdev_device, dev)
> diff --git a/drivers/vfio/mdev/vfio_mdev.c b/drivers/vfio/mdev/vfio_mdev.c
> index 30964a4e0a28..7b24ee9cb8dd 100644
> --- a/drivers/vfio/mdev/vfio_mdev.c
> +++ b/drivers/vfio/mdev/vfio_mdev.c
> @@ -120,10 +120,16 @@ static void vfio_mdev_remove(struct device *dev)
> vfio_del_group_dev(dev);
> }
>
> +static const struct mdev_class_id id_table[] = {
> + { MDEV_CLASS_ID_VFIO },
> + { 0 },
> +};
> +
> static struct mdev_driver vfio_mdev_driver = {
> .name = "vfio_mdev",
> .probe = vfio_mdev_probe,
> .remove = vfio_mdev_remove,
> + .id_table = id_table,
> };
>
> static int __init vfio_mdev_init(void)
> diff --git a/include/linux/mdev.h b/include/linux/mdev.h index
> 0ce30ca78db0..78b69d09eb54 100644
> --- a/include/linux/mdev.h
> +++ b/include/linux/mdev.h
> @@ -118,6 +118,7 @@ struct mdev_type_attribute mdev_type_attr_##_name
> = \
> * @probe: called when new device created
> * @remove: called when device removed
> * @driver: device driver structure
> + * @id_table: the ids serviced by this driver
> *
> **/
> struct mdev_driver {
> @@ -125,6 +126,7 @@ struct mdev_driver {
> int (*probe)(struct device *dev);
> void (*remove)(struct device *dev);
> struct device_driver driver;
> + const struct mdev_class_id *id_table;
> };
>
> #define to_mdev_driver(drv) container_of(drv, struct mdev_driver, driver)
> @@ -132,6 +134,7 @@ struct mdev_driver { void *mdev_get_drvdata(struct
> mdev_device *mdev); void mdev_set_drvdata(struct mdev_device *mdev, void
> *data); const guid_t *mdev_uuid(struct mdev_device *mdev);
> +void mdev_set_class(struct mdev_device *mdev, u16 id);
>
> extern struct bus_type mdev_bus_type;
>
> @@ -145,4 +148,9 @@ struct device *mdev_parent_dev(struct mdev_device
> *mdev); struct device *mdev_dev(struct mdev_device *mdev); struct
> mdev_device *mdev_from_dev(struct device *dev);
>
> +enum {
> + MDEV_CLASS_ID_VFIO = 1,
> + /* New entries must be added here */
> +};
> +
> #endif /* MDEV_H */
> diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
> index 5714fd35a83c..f32c6e44fb1a 100644
> --- a/include/linux/mod_devicetable.h
> +++ b/include/linux/mod_devicetable.h
> @@ -821,4 +821,12 @@ struct wmi_device_id {
> const void *context;
> };
>
> +/**
> + * struct mdev_class_id - MDEV device class identifier
> + * @id: Used to identify a specific class of device, e.g vfio-mdev device.
> + */
> +struct mdev_class_id {
> + __u16 id;
> +};
> +
> #endif /* LINUX_MOD_DEVICETABLE_H */
> diff --git a/samples/vfio-mdev/mbochs.c b/samples/vfio-mdev/mbochs.c index
> ac5c8c17b1ff..115bc5074656 100644
> --- a/samples/vfio-mdev/mbochs.c
> +++ b/samples/vfio-mdev/mbochs.c
> @@ -561,6 +561,7 @@ static int mbochs_create(struct kobject *kobj, struct
> mdev_device *mdev)
> mbochs_reset(mdev);
>
> mbochs_used_mbytes += type->mbytes;
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
>
> err_mem:
> diff --git a/samples/vfio-mdev/mdpy.c b/samples/vfio-mdev/mdpy.c index
> cc86bf6566e4..665614574d50 100644
> --- a/samples/vfio-mdev/mdpy.c
> +++ b/samples/vfio-mdev/mdpy.c
> @@ -269,6 +269,7 @@ static int mdpy_create(struct kobject *kobj, struct
> mdev_device *mdev)
> mdpy_reset(mdev);
>
> mdpy_count++;
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> diff --git a/samples/vfio-mdev/mtty.c b/samples/vfio-mdev/mtty.c index
> ce84a300a4da..90da12ff7fd9 100644
> --- a/samples/vfio-mdev/mtty.c
> +++ b/samples/vfio-mdev/mtty.c
> @@ -755,6 +755,7 @@ static int mtty_create(struct kobject *kobj, struct
> mdev_device *mdev)
> list_add(&mdev_state->next, &mdev_devices_list);
> mutex_unlock(&mdev_list_lock);
>
> + mdev_set_class(mdev, MDEV_CLASS_ID_VFIO);
> return 0;
> }
>
> --
> 2.19.1
Reviewed-by: Parav Pandit <parav@mellanox.com>
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next prev parent reply other threads:[~2019-10-23 16:30 UTC|newest]
Thread overview: 117+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-23 13:07 [PATCH V5 0/6] mdev based hardware virtio offloading support Jason Wang
2019-10-23 13:07 ` [Intel-gfx] " Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 13:07 ` [PATCH V5 1/6] mdev: class id support Jason Wang
2019-10-23 13:07 ` [Intel-gfx] " Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 16:30 ` Parav Pandit [this message]
2019-10-23 16:30 ` [Intel-gfx] " Parav Pandit
2019-10-23 16:30 ` Parav Pandit
2019-10-23 16:30 ` Parav Pandit
2019-10-23 16:30 ` Parav Pandit
2019-10-23 21:42 ` Alex Williamson
2019-10-23 21:42 ` [Intel-gfx] " Alex Williamson
2019-10-23 21:42 ` Alex Williamson
2019-10-23 21:42 ` Alex Williamson
2019-10-24 3:27 ` Jason Wang
2019-10-24 3:27 ` [Intel-gfx] " Jason Wang
2019-10-24 3:27 ` Jason Wang
2019-10-24 3:27 ` Jason Wang
2019-10-24 19:46 ` Alex Williamson
2019-10-24 19:46 ` Alex Williamson
2019-10-24 19:46 ` [Intel-gfx] " Alex Williamson
2019-10-24 19:46 ` Alex Williamson
2019-10-24 19:46 ` Alex Williamson
2019-10-24 20:13 ` Alex Williamson
2019-10-24 20:13 ` [Intel-gfx] " Alex Williamson
2019-10-24 20:13 ` Alex Williamson
2019-10-24 20:13 ` Alex Williamson
2019-10-25 1:42 ` Jason Wang
2019-10-25 1:42 ` Jason Wang
2019-10-25 1:42 ` [Intel-gfx] " Jason Wang
2019-10-25 1:42 ` Jason Wang
2019-10-25 1:42 ` Jason Wang
2019-10-24 3:27 ` Jason Wang
2019-10-23 21:42 ` Alex Williamson
2019-10-23 13:07 ` [PATCH V5 2/6] modpost: add support for mdev class id Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 13:07 ` [Intel-gfx] " Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 21:42 ` Alex Williamson
2019-10-23 21:42 ` [Intel-gfx] " Alex Williamson
2019-10-23 21:42 ` Alex Williamson
2019-10-23 21:42 ` Alex Williamson
2019-10-24 3:31 ` Jason Wang
2019-10-24 3:31 ` Jason Wang
2019-10-24 3:31 ` [Intel-gfx] " Jason Wang
2019-10-24 3:31 ` Jason Wang
2019-10-24 3:31 ` Jason Wang
2019-10-24 19:54 ` Alex Williamson
2019-10-24 19:54 ` Alex Williamson
2019-10-24 19:54 ` [Intel-gfx] " Alex Williamson
2019-10-24 19:54 ` Alex Williamson
2019-10-24 19:54 ` Alex Williamson
2019-10-25 1:44 ` Jason Wang
2019-10-25 1:44 ` [Intel-gfx] " Jason Wang
2019-10-25 1:44 ` Jason Wang
2019-10-25 1:44 ` Jason Wang
2019-10-25 1:44 ` Jason Wang
2019-10-23 21:42 ` Alex Williamson
2019-10-23 13:07 ` [PATCH V5 3/6] mdev: introduce device specific ops Jason Wang
2019-10-23 13:07 ` [Intel-gfx] " Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 13:07 ` [PATCH V5 4/6] mdev: introduce virtio device and its device ops Jason Wang
2019-10-23 13:07 ` [Intel-gfx] " Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 21:57 ` Alex Williamson
2019-10-23 21:57 ` [Intel-gfx] " Alex Williamson
2019-10-23 21:57 ` Alex Williamson
2019-10-23 21:57 ` Alex Williamson
2019-10-24 3:51 ` Jason Wang
2019-10-24 3:51 ` [Intel-gfx] " Jason Wang
2019-10-24 3:51 ` Jason Wang
2019-10-24 3:51 ` Jason Wang
2019-10-24 20:44 ` Alex Williamson
2019-10-24 20:44 ` Alex Williamson
2019-10-24 20:44 ` [Intel-gfx] " Alex Williamson
2019-10-24 20:44 ` Alex Williamson
2019-10-24 20:44 ` Alex Williamson
2019-10-25 1:54 ` Jason Wang
2019-10-25 1:54 ` Jason Wang
2019-10-25 1:54 ` [Intel-gfx] " Jason Wang
2019-10-25 1:54 ` Jason Wang
2019-10-25 1:54 ` Jason Wang
2019-10-24 3:51 ` Jason Wang
2019-10-29 7:42 ` Zhu Lingshan
2019-10-29 7:42 ` [Intel-gfx] " Zhu Lingshan
2019-10-29 7:42 ` Zhu Lingshan
2019-10-29 7:42 ` Zhu Lingshan
2019-10-29 10:42 ` Jason Wang
2019-10-29 10:42 ` Jason Wang
2019-10-29 10:42 ` [Intel-gfx] " Jason Wang
2019-10-29 10:42 ` Jason Wang
2019-10-30 7:36 ` Zhu Lingshan
2019-10-30 7:36 ` [Intel-gfx] " Zhu Lingshan
2019-10-30 7:36 ` Zhu Lingshan
2019-10-23 13:07 ` Jason Wang
2019-10-23 13:07 ` [PATCH V5 5/6] virtio: introduce a mdev based transport Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 13:07 ` [Intel-gfx] " Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 13:07 ` [PATCH V5 6/6] docs: sample driver to demonstrate how to implement virtio-mdev framework Jason Wang
2019-10-23 13:07 ` [Intel-gfx] " Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 13:07 ` Jason Wang
2019-10-23 23:42 ` ✗ Fi.CI.CHECKPATCH: warning for mdev based hardware virtio offloading support (rev6) Patchwork
2019-10-23 23:42 ` [Intel-gfx] " Patchwork
2019-10-24 0:10 ` ✓ Fi.CI.BAT: success " Patchwork
2019-10-24 0:10 ` [Intel-gfx] " Patchwork
2019-10-24 20:36 ` ✗ Fi.CI.IGT: failure " Patchwork
2019-10-24 20:36 ` [Intel-gfx] " Patchwork
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