Memory >3.5GB not used?

[Don O'Neil]

Thanks for all who pointed out the obvious PAE option...

When I went to rebuild the kernel I got this message:

+++++++++++++++++++++++++++
cc -O2 -fno-strict-aliasing -pipe -Werror -D_KERNEL -DKLD_MODULE -nostdinc
-I-   -DHAVE_KERNEL_OPTION_HEADERS -include
/usr/src/sys/i386/compile/KERMIT/opt_global.h -I. -I@ -I@/contrib/altq
-I/usr/include -finline-limit=8000 -fno-common -g
-I/usr/src/sys/i386/compile/KERMIT -mno-align-long-strings
-mpreferred-stack-boundary=2  -mno-mmx -mno-3dnow -mno-sse -mno-sse2
-ffreestanding -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes
-Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual
-fformat-extensions -std=c99 -c /usr/src/sys/modules/aha/../../dev/aha/aha.c
/usr/src/sys/modules/aha/../../dev/aha/aha.c: In function `ahaaction':
/usr/src/sys/modules/aha/../../dev/aha/aha.c:848: warning: cast from pointer
to integer of different size
*** Error code 1

Stop in /usr/src/sys/modules/aha.
*** Error code 1

Stop in /usr/src/sys/modules.
*** Error code 1

Stop in /usr/src/sys/i386/compile/KERMIT.
+++++++++++++++++++++++++++

Why would it be complaining about the aha module when I have it commented
out as a device?

-----Original Message-----
From: Bill Moran [mailto:wmoran at potentialtech.com] 
Sent: Tuesday, April 24, 2007 11:05 AM
To: Don O'Neil
Cc: freebsd-questions at freebsd.org
Subject: Re: Memory >3.5GB not used?

In response to "Don O'Neil" <lists at lizardhill.com>:

> I just built a new server with an Athlon 64 x2, 4GB Ram and a 
> Gigabyte/Nvidia motherboard.
> 
> When I boot the system up it says on the console that 532888K will be 
> ignored.
> 
> Of course it isn't put in any of the log files. Dmesg shows this:
> 
> real memory  = 3724476416 (3551 MB)
> avail memory = 3649908736 (3480 MB)
> 
> Any reason the extra 1/2 GB isn't showing up or usable? Is there 
> something I need to specify in the kernel to get to the other 1/2 GB? 
> What if I want to install more than 4GB? This mobo supports up to 16 
> GB... Do I need to go to the AMD64 platform to get >4GB?
> 
> I'm running FreeBSD 6.1 i386 SMP kernel.

http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/troubleshoot.html#PAE

--
Bill Moran
http://www.potentialtech.com