4 commits

Author	SHA1	Message	Date
Else Someone	17bde34c96	taps: MVE ... EIO crash in CH was caused by CH trying to writev before the interface has been assigned any addresses; adding an address prior to passing the FD (via 80-vm-vt.network) solves the issue. It is still unclear what causes the interrupt=None in the vhost_user/passt branch	2026-02-12 20:23:55 +02:00
Else Someone	1c5e2b7e89	taps: MVE ... - TUNSETIFF works, the interface is indeed created. - An fd is indeed passed over the unix socket, - and is a valid (enough) fd because it can fed into `dup2`. - `nix run -f . --offline pkgs.taps -- pass sleep 5` works, the interface exists for 5 seconds and disappears - `nix run -f . --offline pkgs.taps -- pass ch-remote --api-socket=$HOME/uvms/nixos/vmm.sock add-net fd=3` obscurely fails, killing the VMM with: ```console [root@nixos:~]# cloud-hypervisor: 12.388270s: <_net1_qp0> ERROR:/build/source/net_util/src/queue_pair.rs:112 -- net: tx: failed writing to tap: Input/output error (os er ror 5) cloud-hypervisor: 12.388459s: <_net1_qp0> ERROR:virtio-devices/src/thread_helper.rs:54 -- Error running worker: HandleEvent(Error processing TX queue: NetQueuePair(Write Tap(Os { code: 5, kind: Uncategorized, message: "Input/output error" }))) ```	2026-01-28 07:19:32 +02:00
Else Someone	691a193bba	taps: fix error messages	2026-01-28 07:19:32 +02:00
Else, Someone	8bbafe0f0a	taps: wip: init	2026-01-28 07:19:32 +02:00