On Mon, Jun 03, 2024 at 10:09:29PM -0700, mhkelley58@xxxxxxxxx wrote: > From: Michael Kelley <mhklinux@xxxxxxxxxxx> > > Because Hyper-V doesn't know ahead-of-time what operating system will be > running in a guest VM, it may offer to Linux guests VMBus devices that are > intended for use only in Windows guests. Currently in Linux, VMBus > channels are created for these devices, and they are processed by > vmbus_device_register(). While nothing further happens because no matching > driver is found, the channel continues to exist. > > To avoid having the spurious channel, drop such devices immediately in > vmbus_onoffer(), based on identifying the device in the > vmbus_unsupported_devs table. If Hyper-V should issue a rescind request > for the device, no matching channel will be found and the rescind will > also be ignored. > > Since unsupported devices are dropped early, the check for unsupported > devices in hv_get_dev_type() is redundant. Remove it. > > Signed-off-by: Michael Kelley <mhklinux@xxxxxxxxxxx> Acked-by: Wei Liu <wei.liu@xxxxxxxxxx>
