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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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registry variant; complete vgsp rename; docs/tooling refresh
- gsp_phys_booter: GR promote bisection modes 4-17 (two-phase zero-field VA,
batched entries, hVirtMemory, bare VA, KMD SKIP_CTXBUFFER_ALLOC channel,
old-interface GPU_INITIALIZE_CTX, FBMEM context buffer, UVM-faithful PA-only,
PATCH/PM auxiliary promotes, server-managed no-promote path); PATCH/PM
geometry queries and buffers; pre-boot SET_REGISTRY profile selection
- gsp_phys_gpu: gsp_phys_rmcall_gr_promote clamp 0..17 and gsp_phys_srv_ctxbuf
parameter; registry image variant with RMSetClientRMAllocatedCtxBuffer=0
- vgsp rename across kernel, scripts, tools and docs (module vgsp.ko,
/sys/kernel/debug/vgsp/, vgsp-<subsystem>: log prefixes)
- risc-v-gsp-rm-debugger user-facing rename and docs/CI refresh; guest-diag
tool updates; README/SBOM/install/Makefile sync
Live status: CE ladder and P6 guest-copy forwarding green; GR engine context
commit still open (all promote shapes accepted or cleanly refused; the channel
stays CTXNOTVALID) - see Handoff-vGPU-IO.md Addendum 21 (local).
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The DtoH staging buffer lives in the client's high-VA /dev/zero|nvidia
mappings (e.g. devptr+0x3c00100), outside the scanner's fixed CE/GR
windows; only the host's pagemap read can see it. The guest scanner
now walks those VMAs and streams their present pages so the module
pins them. run_cycle.sh learns the sema_dbg master switch (auto-on
when any watch knob is set).
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payload-pattern audit
- CE LAUNCH_DMA releases are now applied after the push's collected work
runs: the client reads copied data as soon as it observes the release,
so release-first let cuMemcpyDtoH observe a copy that had not executed.
- Unreadable CE entries stay pending for a grace window (sema_ce_grace_ms,
default 8s) before the release fallback consumes them, so a translation
that lands within a service pass lets the push be decoded and its work
executed instead of being dropped.
- sema_copy_pat matches an 8-byte value against every copy's src/dst first
word and scans decoded pushes for it, naming the submission that carries
a known payload regardless of size/encoding.
- sema-dma-skip logs transfer-shaped launches that collect no op; op log
lines carry the channel handle; LAUNCH_DMA inventory follows OPS_LOG.
- A real release application now records the release VA, so decoded pushes
no longer trigger a spurious fake release.
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CDT_WAIT passthrough
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run_cycle OPS_LOG knob
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window has no CPU alias; the vsock stream cannot supply it)
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roundtrip diagnostics
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(all 20 channel releases now land), queue payloads that arrive before the slot pin
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watcher reaping, wider CE stream window
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