Messages in this thread | | | Subject | Re: High Mem Options | From | Alan Cox <> | Date | 05 Mar 2003 14:21:11 +0000 |
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On Wed, 2003-03-05 at 12:49, Michael Vergoz wrote: > Hi Alan, > > That i can't understand i when the system going to the protect mode. > How the system can use over 4GB memory ?
In PAE mode the later CPUS have 32bit virtual addresses but the page table entries to map these allow 36bit physical addresses. It means you can't address more than 4Gb at a time without updating MMU tables - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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