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port-evbmips/52506: ERLITE MULTIPROCESSOR boot more broken than before

>Number:         52506
>Category:       port-evbmips
>Synopsis:       ERLITE MULTIPROCESSOR boot more broken than before
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-evbmips-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Aug 24 08:50:00 +0000 2017
>Originator:     coypu
>Release:        NetBSD 8.99.1
NetBSD 8.99.1 (ERLITE.MP) #38: Thu Aug 24 11:37:55 IDT 2017 fly@loggy:/home/fly/mips64eb/sys/arch/evbmips/compile/ERLITE.MP

Now even enabling MULTIPROCESSOR I get:
cpu1 at cpunode0 core 1 disabled (unresponsive)

Reverting these two commits makes it run the second CPU (and promptly fall flat on its face):

Maintain the split of physical memory into the defined freelists, but
only force pool pages to VM_FREELIST_FIRST512M for non _LP64

Always use XKPHYS for pool pages on _LP64; otherwise use KSEG0

cvs rdiff -u -r1.277 -r1.278 src/sys/arch/mips/mips/mips_machdep.c
cvs rdiff -u -r1.20 -r1.21 src/sys/arch/mips/mips/pmap_machdep.c
bootoctlinux $loadaddr coremask=0x3

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