Problem: -------- If a guest has vhost-user enabled, then on reboot vhost_virtqueue_stop is invoked. This unmaps vring memory mappings. However, it will not give any indication to the underlying DPDK slave application about it. Therefore, a pollmode DPDK driver tries to read the ring to check for packets and segfaults.
Solution: ---------- VHOST_USER_RESET_OWNER API is issued by QEMU so that DPDK slave application is informed that mappings will be soon gone so that it can take necessary steps. Shesha Sreenivasamurthy (1): vhost-user: Slave crashes as Master unmaps vrings during guest reboot hw/virtio/vhost.c | 5 +++++ 1 file changed, 5 insertions(+) -- 1.9.5 (Apple Git-50.3)
