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On Wed, 2006-05-17 at 15:43 -0300, Juliano Morais Barbosa wrote: |
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> I have gentoo 2.6.16-gentoo-r1-Flexsolutions #1 SMP Thu Mar 30 08:21:07 BRT |
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> 2006 x86_64 AMD Athlon(tm) 64 Processor 3500+ AuthenticAMD GNU/Linux with |
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> 4Gb of RAM but in top I see 3Gb, and the kernel don´t have option for High |
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> Memory Option. |
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> |
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> |
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This is a case of the motherboard reserving address space in the 32-bit |
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range for things like AGP aperture, BIOS shadowing, and so on. There is |
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nothing linux can do about it. You can either a) get the motherboard to |
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shift the displaced RAM above 4G (many motherboards can do this), or b) |
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get the motherboard to shift the address space reservations above 4G |
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(I've only ever heard of one motherboard that can do this). If you |
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motherboard can do neither, then you must contact the manufacturer for a |
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solution, or, at worst, buy a new motherboard. |
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|
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Daniel |
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