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/freebsd-11-stable/sys/x86/x86/
H A Dintr_machdep.cdiff 320097 Mon Jun 19 13:41:28 MDT 2017 gjb MFC r319942 (jhb):

Don't try to assign interrupts to a CPU on single-CPU systems.

All interrupts are routed to the sole CPU in that case implicitly.
This is a regression in EARLY_AP_STARTUP. Previously the 'assign_cpu'
variable was only set when a multi-CPU system finished booting, so
its value both meant that interrupts could be assigned and that
there was more than one CPU.

PR: 219882
Approved by: re (kib)
Sponsored by: The FreeBSD Foundation
/freebsd-11-stable/sbin/hastd/
H A Dprimary.cdiff 219882 Tue Mar 22 18:40:12 MDT 2011 trociny After synchronization is complete we should make primary counters be
equal to secondary counters:

primary_localcnt = secondary_remotecnt
primary_remotecnt = secondary_localcnt

Previously it was done wrong and split-brain was observed after
primary had synchronized up-to-date data from secondary.

Approved by: pjd (mentor)
MFC after: 1 week

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