The usb-kbd behind the QEMU usb-hub now enumerates fully: debounce ->
port reset -> enable -> second debounce -> pre-attach -> attach ->
ATTACH 5.2 -> slot 3 -> addressed -> descriptors read -> HID class match
-> 'Loading subdriver "USB HID" for port 5.2' (class 3.1 proto 1,
keyboard boot protocol).
Root cause of the final stall: an unconditional SetPortFeature
(PORT_INDICATOR) for every connected+enabled port NAK-hung on QEMU's
indicator-less hub (no control-transfer timeout), blocking the flow
before the post-enable debounce. Now gated on
wHubCharacteristics.HUB_CHAR_PORTIND like Linux has_indicators.
test-usb-hub-qemu.sh: check #5 now requires the hub-child subdriver
line ('Loading subdriver "USB HID" for port <root>.<child>') so a
root-port HID (tablet) can no longer satisfy it — closes a false-
positive hole. Timeout raised to 360s for slow TT-path driver bring-up.
Docs (plan P3-A runtime validation + matrix): full hub + hub-child
chain recorded as QEMU-proven; remaining items (intermittent reactor
startup race, slow TT-path Evaluate Context) noted.
Hub enumeration is quick, but a hub-child's class driver then performs
its own descriptor/control transfers on the slow emulated TT path, and
the guest clock runs several times slower than wall time under load.
180s cut the boot before a hub-child HID driver could finish
registering after being spawned.
Serial output from dozens of concurrent daemons interleaves mid-line,
so full-sentence matches like 'usbhubd: 8 port(s) detected' fail even
when the content is present (observed mangled as 'usbhubd: 548: port(s)
detected'). Match short fragments ('port(s) detected', 'change
detection', 'registered producer') that survive interleaving.
The 'USB HUB driver spawned' log line is emitted before setup_logging
and never reaches the serial console, so check #2 could never pass.
Use the hub-descriptor read line (emitted only after XhciClientHandle
open + 8-port descriptor fetch succeed) as the spawn proof, and fold
the old duplicate descriptor check into it.
- sync-versions.sh: 11 brush workspace crates 0.x -> 0.3.1 (Cat 1
in-house version policy).
- test-usb-hub-qemu.sh: boot the live ISO (canonical build-redbear.sh
artifact) instead of harddrive.img, which is only produced by older
make-all flows and goes stale — a stale Jul-17 image with a
pre-version-sync bootloader (+rb0.3.0) masked the current build and
crashed the first proof attempt. Falls back to harddrive.img only
when no ISO exists.
vasilito