Files
LithosAnanake/logs
Robert Allan JamesandClaude Sonnet 5 dd09de65f5 FABRIC.md: item 4.5d -- arch_relax() tested against the PM Timer stall, disproven
Follow-up probing narrowed Finding 3's behavior (inconsistent stall point
run-to-run: sometimes reaches iters=1000/delta=951 before stopping,
sometimes never gets past iters=0 even after a 400-second bounded wait) but
didn't pin the mechanism.

Tested the strongest available hypothesis: single-threaded TCG scheduling
starvation from an -O2-tightened spin loop, based on a real precedent --
calibrate_apic_timer() (apic.c) already calls arch_relax() every iteration
of its own spin-wait; calibrate_tsc_with_pmtimer() never had it. Added the
same call, matching that precedent exactly. Result: no change, same exact
stall point on a fresh 60-second bounded wait. Reverted.

Stopping here per this document's own §25.0 rule 5 -- root-causing further
needs either deeper TCG/QEMU internals knowledge or a different diagnostic
approach (host-side instrumentation) than another guess-and-check pass.
Makefile.starkernel and timer.c both back to committed -O0 state, confirmed
booting clean.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-11 11:35:09 -04:00
..
2026-08-02 05:11:24 -04:00
2026-08-02 05:11:24 -04:00
2026-08-02 05:11:24 -04:00

logs/

QEMU acceptance-run history and Tripod smoke-test results.

  • <timestamp>/{amd64,aarch64,riscv64}/ — 255 timestamped three-arch QEMU acceptance run directories, one per invocation of the kernel QEMU acceptance workflow.
  • qemu-screenshot-*.png, qemu-screenshot-*.log, qemu-{amd64,aarch64,riscv64}-*.log, fbtest-console-*.png — loose timestamped QEMU serial captures and framebuffer screenshots from individual manual runs (not part of the timestamped-directory convention above).
  • hermes-tripod-smoke-results.md, hermes-channel-smoke-results.md — captured output from tools/hermes_tripod_smoke.sh and tools/hermes_channel_smoke.sh.
  • hermes-tripod-integration-design.md — design notes for the Tripod integration test.

Note: QEMU_BASELINE.log at the repo root (not in this directory) is the primary kernel regression baseline referenced by .claude/CLAUDE.md; the logs here are supplementary historical captures. See also logs2/ (a separate, flatter QEMU log archive) and experiments/bare_metal/runs/ (DoE-specific run output).