D42266.id129066.diff
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D42266.id129066.diff
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	diff --git a/sys/kern/kern_thread.c b/sys/kern/kern_thread.c
	--- a/sys/kern/kern_thread.c
	+++ b/sys/kern/kern_thread.c
	@@ -568,9 +568,16 @@
	if (tid0 != THREAD0_TID)
	panic("tid0 %d != %d\n", tid0, THREAD0_TID);

	+ /*
	+ * Thread structures are specially aligned so that (at least) the
	+ * 5 lower bits of a pointer to 'struct thead' must be 0. These are
	+ * used by synchronization primitives to store flags in pointers to
	+ * thread structures (lockmgr, rwlock, and sx use the whole 5 bits,
	+ * rmlock indirectly by relying on sx, mtx (non-spin) relies on 3 bits).
	+ */
	thread_zone = uma_zcreate("THREAD", sched_sizeof_thread(),
	thread_ctor, thread_dtor, thread_init, thread_fini,
	- 32 - 1, UMA_ZONE_NOFREE);
	+ UMA_ALIGN_CACHE_AND_MASK(32 - 1), UMA_ZONE_NOFREE);
	tidhashtbl = hashinit(maxproc / 2, M_TIDHASH, &tidhash);
	tidhashlock = (tidhash + 1) / 64;
	if (tidhashlock > 0)