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| author | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-10-18 15:40:56 -0400 |
|---|---|---|
| committer | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-10-18 15:41:56 -0400 |
| commit | fb3db6dfc686405fc9fb37ecdf99e3b2ba138d6e (patch) | |
| tree | 3351dd2ff509aac17d3ea2cc1781275a22804930 /kernel/include | |
| parent | 97f3973aa310c3f3387c4e69c274c5075f2f779e (diff) | |
| download | open-iov-fb3db6dfc686405fc9fb37ecdf99e3b2ba138d6e.tar.gz open-iov-fb3db6dfc686405fc9fb37ecdf99e3b2ba138d6e.zip | |
vgsp: fail4 r233 - budgeted REC-DUMP + READ-DIVERGE-WIT (fill vs copy-path vs ledger)
r231/r232: the probe-class launches produced zero REC-DUMP lines while the
transformer's 8+2 appeared - the per-line pr_info_ratelimited was
suppressed wholesale during the probe's post-stall logging burst. REC-DUMP
now uses plain pr_info under a boot-wide 512-line budget, so a <=64-rec
launch always dumps its full rec table.
READ-DIVERGE-WIT (sema service, rec-build loop): for small launches the
three resolutions of each VA are compared side by side - the fill's
dg->pa (the page whose content the copy-in stages; exactly what the engine
reads), svc_op_translate (the H2D/D2H copy path's resolver) and the
ledger's write landing. A page-level split is logged with op_src/op_rc and
an op-miss token. Bounded: first 8 recs, boot budget 128.
Static permutation check (negative): reloc_va is assigned sequentially in
fill order (svc_gr_data_fill), copy-in/out iterate recs in order, the
engine reads reloc-base + linear offset, and the per-page copy loop folds
in-page offsets correctly on every resolver path; no sort/rotate/LIFO
order found in the page-table or copy paths. The remaining split suspect is
the m171/m180 ledger DIVERGE preference - exactly what READ-DIVERGE-WIT
compares.
Build green.
(cherry picked from commit 59e50207d60067b5d1e3a0546f20e9b22c92e112)
Diffstat (limited to 'kernel/include')
0 files changed, 0 insertions, 0 deletions
