refactor(v3): the block subsystem's state is a chain there can be two of; blk_subsys_init takes no VM

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The global state becomes struct blk_chain, reached through a current
pointer: blk_chain_default, blk_chain_new, blk_chain_select.  Nothing
that uses the one chain changes.  blk_subsys_init loses its VM argument,
which was stored and never used.  docs/v4.0.0/MESH.md 8.4.

Accepted on the v3 configuration: amd64, aarch64 and riscv64 reach the
zuse prompt, no UNKNOWN WORD, PARITY:M7.1a hash 0x08873e0f44b7cb2a on
all three, as on 2026-10-03.  logs/20261006-202918, -203036, -203230.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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This commit is contained in:

rajames

2026-10-06 20:33:32 -04:00

co-authored by Claude Opus 5.5

parent a7991f2757

commit 0e761cb117

8 changed files with 27485 additions and 11 deletions

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logs/20261006-202918/amd64/qemu-amd64-20261006-202918.log

+9143

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logs/20261006-203036/aarch64/qemu-aarch64-20261006-203036.log

+9115

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logs/20261006-203230/riscv64/qemu-riscv64-20261006-203230.log

+9188

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