> 2) xsvc is a hack that should be replaced by a proper /dev/mem

I think /dev/mem is unusable, /dev/mem maps the most of RAM/RWM memory and not 
ROM/FLASH (or RAM/RWM copy of ROM/FLASH) memory where APCI tables reside.

/dev/mem is driven by 'phys_install' memlist ( 
http://cvs.opensolaris.org/source/xref/usr/src/uts/common/io/mem.c#633 ).
You can see actual memlist with mdb ( echo 'phys_install::walk memlist | 
::print "struct memlist" address size' | mdb -k ).

M.C>
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