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Sweep of the 155 tracked C/Python/shell files under userspace/ (excluding
the MIT-licensed vendored userspace/extern/), tools/ and scripts/ that had
no per-file license identifier. Each gains the minimal two-line header in
the area's existing form: 'SPDX-License-Identifier: BSD-3-Clause' plus
'Copyright (c) 2026 Open-IOV contributors'; shebang and coding lines stay
first. No other content touched. kernel/** is deliberately out of scope
(recorded as a follow-up in CODESTD-REPORT-2026-10-08.md): its SPDX
coverage and MODULE_LICENSE normalization need their own GPL-2.0 pass.
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Host oracle (real TU104, 570.211): FUN_0035a4d0(0x13,7,5) succeeds because
the 3-entry remap table at 0x3dc5b80 maps (7,5)->(7,0); the guest has the
same table. bpz7 breaks before/after the lookup and the FUN_00e21850 ucode
load in FUN_005d7e70 to see which one fails in the guest. Also fix invd.py's
lookup address (0x25a4d0, not 0x35a4d0).
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Run #5 named the failing hook: idx=3 FUN_005d7e70 ('membar_war_bug2022401')
returned 999; its only source is FUN_0035a4d0(0x13, dev+0xc50, dev+0xc54)
returning NULL or the ucode load failing. bpz6 reads the live device state
arch/impl at the failure and evaluates the lookup in-process, scanning
(arch,rev) pairs to show which WAR-ucode descriptors exist; invd.py is the
standalone same-probe for a parked cdt.
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