[Bug 233863] coldboot ppc64 r341705 on PowerMac G5 requires kern.smp.disabled=1 and usefdt=1 which causes net interface reorder

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233863

Dennis Clarke <dclarke at blastwave.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|ppc64 r341705 on PowerMac   |coldboot ppc64 r341705 on
                   |G5 requires                 |PowerMac G5 requires
                   |kern.smp.disabled=1 and     |kern.smp.disabled=1 and
                   |usefdt=1 which causes net   |usefdt=1 which causes net
                   |interface reorder           |interface reorder

--- Comment #2 from Dennis Clarke <dclarke at blastwave.org> ---
As yet another variable in the mix we see all four cpu's are online
if and only if one performs are warm boot aka shutdown -r 'now' : 

1) power on system and wait for loader
2) interrupt the load kernel process
3) set kern.smp.disabled=1 
4) set usefdt=1
5) boot -sv
6) once the shell is running simply shutdown -r 'now'
7) interrupt the load kernel process
8) set usefdt=1
9) boot normally 

All processor cores wwill come online : 


eris# uname -aU
FreeBSD eris 13.0-CURRENT FreeBSD 13.0-CURRENT r341705 GENERIC  powerpc 1200086

eris# uptime
11:04PM  up 15 mins, 1 user, load averages: 0.18, 0.21, 0.17

eris# sysctl kern.smp.cpus hw.ncpu 
kern.smp.cpus: 4
hw.ncpu: 4

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