Re: [PATCH v4 04/25] virtio: defer config changed notifications

2014-10-14 Thread Michael S. Tsirkin
On Tue, Oct 14, 2014 at 11:01:12AM +1030, Rusty Russell wrote: > "Michael S. Tsirkin" writes: > > Defer config changed notifications that arrive during > > probe/scan/freeze/restore. > > > > This will allow drivers to set DRIVER_OK earlier, without worrying about > > racing with config change inte

Re: [PATCH v4 04/25] virtio: defer config changed notifications

2014-10-13 Thread Rusty Russell
"Michael S. Tsirkin" writes: > Defer config changed notifications that arrive during > probe/scan/freeze/restore. > > This will allow drivers to set DRIVER_OK earlier, without worrying about > racing with config change interrupts. > > This change will also benefit old hypervisors (before 2009) > t

[PATCH v4 04/25] virtio: defer config changed notifications

2014-10-13 Thread Michael S. Tsirkin
Defer config changed notifications that arrive during probe/scan/freeze/restore. This will allow drivers to set DRIVER_OK earlier, without worrying about racing with config change interrupts. This change will also benefit old hypervisors (before 2009) that send interrupts without checking DRIVER_