Robert Allan JamesandClaude Sonnet 5
6d330efdd8
xhci_poll_events()'s Port Status Change connect branch now calls xhci_cmd_enable_slot() directly (the earlier boot-time smoke test call is gone), tracked via a new dev->pending_connect_port_id -- since this driver only ever has one command outstanding at a time, that alone identifies which port a later Command Completion Event answers, without needing to match the Command TRB Pointer yet. On success the returned Slot ID is recorded in a new dev->port_slot_id[], a fixed uint32_t[XHCI_MAX_TRACKED_PORTS] (32) indexed by port. Disconnect clears the port's tracked slot (real teardown -- Disable Slot, DCBAA clear, Section U callback -- is still a later increment). Fixed array, not heap-allocated: a first attempt sized port_slot_id dynamically via kmalloc_aligned(dev->max_ports * sizeof(uint32_t), 64) inside xhci_bringup() and it crashed amd64 with a page fault (IFETCH at RIP=CR2=0xA0000, the legacy VGA hole) during the unrelated Mama-VM-birth phase afterward -- a heap-corruption signature, not chased to root cause. Switching to a fixed array (matching this driver's existing preference for fixed over dynamic allocation) made the crash go away; the crashing boot's log is kept (logs/20260822-102516/) as the evidence trail. Verified live via QMP hotplug, all three architectures: connect -> "enable slot command submitted" -> "enable slot succeeded", with a disconnect/reconnect cycle repeating cleanly and no port wedge. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01HZ8kNoTuP63pbQtro4qvrm
experiments/
Design of Experiments (DoE) campaign data and analysis for the LithosAnanke kernel.
bare_metal/— the bare-metal DoE experiment: blind full-factorial 2⁴ runs measuring the L8 Jacquard mode selector's effect on the Steady-State Machine across amd64/aarch64/riscv64. Seeexperiments/bare_metal/README.mdfor the full directory layout (runs/,latest/,analysis/{charts,tables,report}).
Hosted-VM DoE campaigns (factorial/heartbeat/ablation studies) live under
docs/working/experiments/ instead — this top-level directory is
specifically the kernel/bare-metal side.