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seelk 04-11-2005 04:38 PM

Kernel configuration and build
I'm trying to build a custom 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 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 .config file to build a new, 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 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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