This brings behavior of passt+vhostuser in line with trad-passt - if the passt process is somehow terminated, libvirt will start a new passt process that qemu will connect to.
You'll notice no change in behavior if your QEMU binary doesn't have the patches that add NETDEV_VHOST_USER_DISCONNECTED to qemu, but also nothing extra will fail. The requisite QEMU patches are upstream in commit 02fd9f8aeeb1 ("net: vhost-user: add QAPI events to report connection state"), which will be in upstream qemu-10.0.0. Resolves: https://issues.redhat.com/browse/RHEL-80169 Laine Stump (5): qemu: remove nonsensical sanity check in processNetdevStreamDisconnectedEvent() qemu: make processNetDevStreamDisconnectedEvent() reusable qemu: respond to NETDEV_VHOST_USER_DISCONNECTED event qemu: put vhost-user code that's special for passt in a helper function qemu: make passt+vhostuser reconnect behave identically to passt+user src/qemu/qemu_domain.c | 1 + src/qemu/qemu_domain.h | 1 + src/qemu/qemu_driver.c | 55 ++++++++++++------- src/qemu/qemu_hotplug.c | 7 +-- src/qemu/qemu_monitor.c | 11 ++++ src/qemu/qemu_monitor.h | 6 ++ src/qemu/qemu_monitor_json.c | 16 ++++++ src/qemu/qemu_passt.c | 25 +++++++++ src/qemu/qemu_passt.h | 3 + src/qemu/qemu_process.c | 27 ++++++--- .../net-vhostuser-passt.x86_64-latest.args | 6 +- ...rder-domain-subelements.x86_64-latest.args | 2 +- 12 files changed, 122 insertions(+), 38 deletions(-) -- 2.49.0