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reverius42
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Joined: 16 Jul 2002
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Location: Tucson, AZ
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 Posted: Wed Jul 24, 2002 9:34 pm Post subject: uncacheable memory |
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Does anyone know of a way to allocate uncacheable memory in Linux, as opposed to the regular write-back memory? I know it's possible in Windows, but I'm not sure if it's possible in Linux...
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delta407
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Joined: 23 Apr 2002
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Location: Chicago, IL
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| Posted: Thu Jul 25, 2002 2:46 am Post subject: |
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What do you mean? Memory that's not allowed to move to swap?
AFAIK, the Linux VMM doesn't let you do that. I'm not certain, though...
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reverius42
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Joined: 16 Jul 2002
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Location: Tucson, AZ
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| Posted: Thu Jul 25, 2002 5:23 pm Post subject: uncachable memory |
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| delta407 wrote: | What do you mean? Memory that's not allowed to move to swap?
AFAIK, the Linux VMM doesn't let you do that. I'm not certain, though... |
No, it's a low level memory allocation. Instead of write-combined or any other method of caching memory, it transfers straight through the bus to the system RAM (without being in the L1 or L2 cache, iirc).
Anyone know of a way to do this?
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