6.0 Buildworld on AMD64

[Ganbold]

Hi Scott, David and all,

I have dual AMD Opteron(tm) Processor 248 (2193.18-MHz K8-class CPU) 
and 4GB of RAM.

publica# uname -an
FreeBSD publica.ub.mng.net 5.3-STABLE FreeBSD 5.3-STABLE #12: Mon Nov 
22 12:04:57 ULAT 
2004     tsgan at publicc.ub.mng.net:/usr/obj/usr/src/sys/AMD  amd64

Yesterday I did cvsup to RELENG_6 from RELENG_5 and made buildworld. 
However buildworld finished in following way:

cc -m32 -march=athlon-xp -msse2 -mfancy-math-387 
-DCOMPAT_32BIT  -I/usr/obj/usr/src/lib32/usr/include 
-L/usr/obj/usr/src/lib32/usr/lib32 
-B/usr/obj/usr/src/lib32/usr/lib32 -O2 -fno-strict-aliasing -pipe 
-Wall -DFREEBSD_ELF -DIN_RTLD -I/usr/src/libexec/rtld-elf/i386 
-I/usr/src/libexec/rtld-elf -elf -fpic -DPIC -Wformat=2 
-Wno-format-extra-args -Werror  -nostdlib -e .rtld_start -elf -shared 
-Wl,-Bsymbolic -o ld-elf32.so.1 rtld_start.o reloc.o rtld.o 
rtld_lock.o map_object.o malloc.o xmalloc.o debug.o libmap.o -lc_pic
publica#

Is it correct? It seems strange to me and I remember usually 
buildworld finishes in different way. Maybe I'm wrong.

Also a long time ago I asked about ips driver from Scott whether it 
supports more than 4GB of RAM. Scott said it is fixed.
However I'm still wondering is it OK to add 4GB of RAM to existing 
system with ips driver after upgrading machine to RELENG_6?
A year ago more than 4GB of RAM caused file system break in my system.

thanks in advance,

Ganbold