Messages in this thread | | | Date | Wed, 9 Apr 2008 11:03:06 +0200 | From | Andi Kleen <> | Subject | Re: Does Linux have plan to support memory hole remapping? |
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> having said that - but we'll still consider sane looking patches that > allow the remapping of otherwise inactive RAM.
I doubt there is any way to do this sanely in the kernel. Usually you would need to move either the PCI hole (which is hard or impossible) or all RAM beyond it (potentially breaking SMM assumptions and causing other problems).
Normally the memory controllers don't have a way to just remap pieces because that would need much hardware in critical paths.
The only half way sane way to attack this without vendor support would be LinuxBIOS imho.
-Andi
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