Hi, QEMU hits the below assert
qemu-system-ppc64: used ring relocated for ring 2 qemu-system-ppc64: qemu/hw/virtio/vhost.c:649: vhost_commit: Assertion `r >= 0' failed. in the following scenario: 1. Boot guest with vhost=on -netdev tap,id=mynet0,script=qemu-ifup,downscript=qemu-ifdown,vhost=on -device virtio-net-pci,netdev=mynet0 2. Hot add a DIMM device 3. Reboot When the guest reboots, we can see vhost_virtqueue_start:vq->used_phys getting assigned an address that falls in the hotplugged memory range. 4. Remove the DIMM device Guest refuses the removal as the hotplugged memory is under use. 5. Reboot QEMU forces the removal of the DIMM device during reset and that's when we hit the above assert. Any pointers on why we are hitting this assert ? Shouldn't vhost be done with using the hotplugged memory when we hit reset ? Regards, Bharata.