Messages in this thread | | | Date | 15 Feb 2005 13:08:00 +0100 | Date | Tue, 15 Feb 2005 13:08:00 +0100 | From | Andi Kleen <> | Subject | Re: X86_64 kernel support MAX memory. |
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On Mon, Feb 14, 2005 at 07:32:42PM -0800, YhLu wrote: > Andi, > > How much is max RAM 2.6.11 x86_64 support on AMD64? > 64G or 128G?
46bits in theory (64TB), however current CPUs only support upto 40bits (AMD) or 36bits (Intel). There is some other code that is also limited to 40bits right now like AGP or IOMMU or MTRR, that is all due to hardware limitations.
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