cc  -O2 -Werror -Wall -Wno-main -I. -I../../../../arch
  -I../../../.. -nostdinc -DCPU_ARM6 -DIOMD -DRISCPC -DARMFPE -DFIFO
  -DINET -DPFIL_HOOKS -DCOMPAT_13 -DCOMPAT_12 -DSYSVMSG -DSYSVSEM
  -DSYSVSHM -DSHMMAXPGS="0x400" -DKTRACE -DIRQSTATS -DMOUSE_IOC_ACK
  -DDIAGNOSTIC -DPOSTMORTEM -DDDB -DIPFILTER_LOG -DMAXUSERS=32 -D_KERNEL
  -Darm32 -Wcomment  -c ../../../../arch/arm32/arm32/postmortem.c
cc1: warnings being treated as errors
  ../../../../arch/arm32/arm32/postmortem.c: In function `postmortem':
  ../../../../arch/arm32/arm32/postmortem.c:202: warning: type defaults
    to `int' in declaration of `postmortem_active'

$NetBSD: postmortem.c,v 1.12 1998/01/21 22:34:38 mark Exp $

static  postmortem_active = 0;

int sounds ok as it only occurs as

if (postmortem_active)
++postmortem_active;
--postmortem_active;

Cheers,

Patrick

PS PMAP_NEW is completely unrelated to UVM right? So with options UVM
in the kernel you only want UVM=yes in /etc/mk.conf, no PMAP business?