https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243711
--- Comment #3 from Mark Johnston <ma...@freebsd.org> --- (In reply to alex_y_xu from comment #2) Ah, I think the snapshots have invariants-checking disabled, which would explain why you're not seeing the problem during boot. > I want to use a non-SMP kernel because I am on a single-CPU VM and I assume > that no-SMP kernels are more efficient. Fair enough. Indeed, mtx_lock_spin() does nothing but disable interrupts in non-SMP FreeBSD kernels (and nothing if they are already disabled). Non-SMP kernels definitely aren't as well tested though. It looks like DTrace has been broken there basically forever: MAXCPU is 256 in kernel modules even when compiled without SMP: #if defined(SMP) || defined(KLD_MODULE) #ifndef MAXCPU #define MAXCPU 256 #endif #else #define MAXCPU 1 #endif ... and smp_rendezvous() and other kernel APIs use pass-by-value for cpuset_t's for a reason that is not clear to me. -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
