Messages in this thread | | | Subject | Re: High Mem Options | From | Alan Cox <> | Date | 05 Mar 2003 13:36:02 +0000 |
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On Wed, 2003-03-05 at 12:11, Michael Vergoz wrote: > Hi Tim, > > Every system can NOT manage more than 4GB memory on x86 processor (32 bits processor). > Because the system addressing is limited to 32Bits, well memory > 4GB is used generaly for memory spare...
x86 has 36bit physical addressing, its a truely bonkers implementation but it does have the facility. The limt in reality is 3Gb per process (1Gb is used for kernel mapping - we could do 4Gb per process but the syscall cost would go up a lot).
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