On Friday, December 28, 2018 3:57 PM, Christian Borntraeger wrote: > On 28.12.2018 03:26, Wei Wang wrote: > > Some vqs don't need to be allocated when the related feature bits are > > disabled. Callers notice the vq allocation layer by setting the > > related names[i] to be NULL. > > > > This patch series fixes the find_vqs implementations to handle this case. > > So the random crashes during boot are gone. > What still does not work is actually using the balloon. > > So in the qemu monitor using lets say "balloon 1000" will hang the guest. > Seems to be a deadlock in the virtio-ccw code. We seem to call the config > code in the interrupt handler. Yes. It reads a config register from the interrupt handler. Do you know why ccw doesn't support it and has some internal lock that caused the deadlock issue? Best, Wei
