On Wed, Nov 6, 2024 at 5:29 PM Michael S. Tsirkin <mst@xxxxxxxxxx> wrote: > > On Fri, Nov 01, 2024 at 10:11:11AM +0800, Jason Wang wrote: > > On Fri, Nov 1, 2024 at 9:54 AM <qiang4.zhang@xxxxxxxxxxxxxxx> wrote: > > > > > > From: Qiang Zhang <qiang4.zhang@xxxxxxxxx> > > > > > > Virtio core unconditionally reset and restore status for all virtio > > > devices before calling restore method. This breaks some virtio drivers > > > which don't need to do anything in suspend and resume because they > > > just want to keep device state retained. > > > > The challenge is how can driver know device doesn't need rest. > > I actually don't remember why do we do reset on restore. Do you? > Because the driver doesn't know if the device can keep its state, so it chooses to start from that. Thanks
