Files
RedBear-OS/local/docs/HARDWARE-VALIDATION-MATRIX.md
T
vasilito a6c7d1d9c6 docs: 'reactor startup race' root cause = startup latency under load
Correct the P3-A runtime-validation note and matrix row: the
intermittent apparent boot freeze is startup latency under load (guest
clock ~10-15x slower than wall), not a deadlock or an xhcid bug. A short
50-60s test timeout occasionally cuts the spawn+enumerate sequence,
producing a 'frozen' log while the guest is still running — proven by
18 boots (one apparent short-timeout loss), a 12s log-quiet 'freeze'
the guest resumed from, and every >=180s run enumerating fully. No fix
required beyond adequate test timeouts; no speculative kernel-deadlock
fix was implemented.
2026-07-19 23:13:46 +09:00

2.0 KiB

Hardware Validation Matrix — Red Bear OS

Component QEMU Bare Metal Notes
Storage
AHCI SATA 🔲 NCQ structure present, not runtime-validated
NVMe 🔲 🔲 Basic driver, no multiqueue
virtio-blk N/A QEMU only
Network
e1000 🔲 🔲 ITR structure present, no offload validation
rtl8168 🔲 🔲 PHY config present, not runtime-tested
virtio-net N/A QEMU only
Audio
Intel HDA 🔲 🔲 Codec detection + jack sense added, not validated
AC97 🔲 🔲 Basic driver
Input
PS/2 🔲 QEMU keyboard/mouse work
USB HID 🔲 Keyboard/mouse autospawn via test-usb-qemu.sh (P1 hardening); not validated on real HW
USB
xHCI host controller 🔲 Interrupt-driven mode proven (test-xhci-irq-qemu.sh); 51-flag quirk table + HCCPARAMS2 gating (P2-A/B); 36-code error recovery (P2-C); not HW-validated
EHCI/UHCI/OHCI controllers 🔲 🔲 Compile clean; runtime enumeration proofs planned (P8-B)
USB storage (BOT) 🔲 usbscsid autospawn + bounded sector readback proven (test-usb-storage-qemu.sh); guest-side write verify open
USB hub (non-root) 🔲 Hub + hub-child enumeration proven in QEMU (test-usb-hub-qemu.sh): hub descriptor/EP1/scan/debounce/reset→enable, and usb-kbd behind hub enumerates to HID subdriver (class 3.1 keyboard); "reactor race" root-caused to startup latency under load (not a deadlock)
GPU/Display
VESA 🔲 QEMU framebuffer works
virtio-gpu N/A 2D only, QEMU
CPU/Power
cpufreqd 🔲 🔲 Governors implemented, not HW-validated
thermald 🔲 🔲 ACPI thermal zones, not HW-validated
SMP
x2APIC/SMP Multi-core works

= validated 🔲 = implemented, not validated N/A = not applicable