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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>
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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kernel/src/capsule/capsule_loader.c
+3 -1
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@@ -95,7 +95,9 @@
int capsule_blk_init(void *vm, uint8_t *ram_buf, size_t ram_size, uint8_t *krd_buf)
{
int rc = blk_subsys_init((VM *)vm, ram_buf, ram_size);
int rc;
(void)vm; /* the block subsystem no longer takes one */
rc = blk_subsys_init(ram_buf, ram_size);
if (rc != 0) return rc;
return blk_subsys_add_raw_device(krd_buf, KRD_MAX_BLOCKS);
}