Robert Allan JamesandClaude Sonnet 5
b24a5a6e25
Root cause of the aarch64 BYE cold-restart exception (present since at least 2026-08-08, ESR_EL1=0x02000000/EC=0 "Unknown reason"), found via live gdb single-stepping through the actual crash: arch_cold_reset() issued PSCI SYSTEM_RESET via `smc #0`, but QEMU's aarch64 virt machine booted with AAVMF (UEFI firmware, no genuine EL3/TrustZone secure monitor) serves PSCI via HVC, not SMC -- nothing exists to answer an SMC call, so it trapped as an illegal instruction straight into the kernel's own exception handler. Not memory corruption, not a race -- a wrong conduit for this boot configuration. Fix: smc #0 -> hvc #0. Function ID and calling convention unchanged. Getting to this required first discovering that starkernel_kernel.elf is not the binary that actually runs -- MONOLITHIC_BUILD links kernel_main() directly into starkernel_loader.efi, a completely separate, differently-linked build artifact. Every earlier gdb breakpoint attempt this session failed because it used addresses from the wrong file. Real addresses (UEFI-chosen ImageBase + linker-map RVA) let gdb catch the crash live for the first time. Verified: full aarch64 acceptance pass, 30/30 stress-campaign reps PASS (unaffected -- this bug only manifested on BYE), and BYE now exits cleanly with no exception for the first time in this investigation. Full writeup in FABRIC-2.md Section I. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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.