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Old 05-12-2008, 02:35 AM   #16
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Registered: Jan 2002
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The reason why I said about my previous post is because I doubt the full compatibility of running a true 64-bit kernel and handling 32-bit IO requests from a 32-bit program. Sure the 64-bit processor is capable of running 32-bit and 64-bit programs, but the 64-bit kernel may screw up the operations of a 32-bit program when handling large amounts of memory. Sorry about the mix up.

I prefer using zcat /proc/config.gz to get a list of the kernel config.
Old 06-24-2008, 03:59 AM   #17
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Registered: Jun 2008
Distribution: Mandriva Spring 2008.1 -
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Hi everybody,

I have exactly same problem, but:

1. I have 64bit processor and 64bit version of Linux Mandriva 2008.1 with kernel, so there is no option like HIGHMEM in my menuconfig and in /boot/config.

2. I have laptop Toshiba Equium A100 series and BIOS is really basic. There is nothing like "memory hole remapping" but in BIOS I see 4GB RAM. Here is specification.

3. I tried to install kernel-server. No changes.

I still have 3015 MB in my system. I know, that 32bit systems should see max 3GB, but why my 64bit Linux see only three gigs?

Is there some way to find those 1GB of RAM?

With best regards


fc7, memory, physical

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