FABRIC-3.10.8 K-11: check the lock order at run time

Every lock carries a rank (hermes < switch < registry < VM dict_lock <
VM tuning_lock < stadium < slot < doe < log < block < console < heap <
vmm < pmm); each core counts held locks per rank and an acquisition not
above the highest held rank counts an order violation, reported in full
at the idle point. Probe inversion reported exactly once; O-A, a 28-VM
churn and the standard sequence show 0 violations on all three ISAs.

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

include/starkernel/percpu.h

@@ -42,6 +42,7 @@
 #define STARKERNEL_PERCPU_H
 
 #include <stdint.h>
+#include "starkernel/spinlock.h" /* SK_LOCK_RANK_COUNT */
 
 struct VM;
 
@@ -57,6 +58,9 @@ typedef struct sk_percpu {
     uint64_t          saved_irq;
     uint64_t          lock_acquired; /* every acquire on this core, ever */
     uint64_t          lock_released; /* every release on this core, ever */
+    /* K-11 (spinlock.c): locks this core holds right now, per rank -- the
+     * lock-order check compares a new lock's rank with the highest held. */
+    uint32_t          held_rank[SK_LOCK_RANK_COUNT];
 } sk_percpu_t;
 
 /* Installs the boot core's block in this core's per-CPU register. Call