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seelk 04-11-2005 04:38 PM

Kernel configuration and build
 
I'm trying to build a custom 2.6.11.7 kernel to meet my needs. I noticed after compiling and building the kernel my system was only seeing about 884 megs of RAM out of my 1.5 gigs of installed RAM. Windows XP and kernel 2.6.11.3-ARCH both see all of the 1.5 gigs of RAM so I'm assuming I didn't configure the kernel properly. I set HighMem to be 4GB, recompiled and the system still didn't see the full amount. I'm wondering if there's anything else that I need to make sure I have enabled in order for the kernel to support the full RAM.

To test, I used the 2.6.11.3-ARCH .config file to build a new 2.6.11.7, modified it (while leaving HighMem as 4GB), booted the system and noticed the system was detecting the full amount of RAM. So I'm thinking there's something else I missed. Does anyone have any idea what my problem could be? Thanks in advanced!

cs-cam 04-12-2005 12:18 AM

Hmmmm nope. I have 1.5G but I use the gentoo patchset kernel and it's all detected properly. I might be moving to a mroe common patchset soon that does the same thigns better so we'll see how I go then but yeah, I had problems in other distrobutions with my RAM but never in Arch with the stock kernels. Did you patch your kernel at all or just fiddle with some options?

Crashed_Again 04-12-2005 07:54 AM

You need to have the HIGHMEM option selected in the kernel config. Its under Processors and Architectures I think.

seelk 04-12-2005 04:24 PM

I did set HighMem to 4GB.

I just used the kernel linux-2.6.11.tar.gz kernel from http://www.kernel.org/pub/linux/kernel/v2.6/. Did I need to apply a patch before building compiling??

cs-cam 04-12-2005 09:14 PM

Not that I'm aware of, HIGHMEM is a stock kernel option. Perhaps give it a go setting it to the next one up, 32G or whatever it is?


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