Hi Jason, > On Fri, Dec 24, 2021 at 3:13 PM Yi Wangwrote: > > > > From: Zhang Min > > > > Some applications like kata-containers need to acquire MAJOR/MINOR/DEVNAME > > for devInfo [1], so regist vhost-vdpa dev class to expose uevent. > > Hi: > > I think we need to be more verbose here e.g: > > 1) why can't we get major/minor with the current interface Although major/minor can be acquired in /sys/bus/vdpa/devices/vdpa0/vhost-vdpa/vhost-vdpa-0/dev, applications like kata-containers prefer and actually have tried to obtain them in /sys/class/vhost-vdpa/vhost-vdpa-0/uevent, such like [1]. > 2) what kind of the uevent is required and not supported currently The items needed show in uevent are MAJOR MINOR DEVNAME that vhost_vdpa_probe currently has registed, but dev_uevent_filter failed to pass and uevent show is empty now, so we regist dev class to let dev_uevent_filter pass and show them. 1. https://github.com/kata-containers/kata-containers/blob/main/src/runtime/virtcontainers/device/config/config.go > > Thanks > > > > > 1. https://github.com/kata-containers/kata-containers/blob/main/src/runtime/virtcontainers/device/config/config.go > > > > Signed-off-by: Zhang Min
