Messages in this thread |  | | Date | Wed, 5 Mar 2003 13:49:37 +0100 | From | Michael Vergoz <> | Subject | Re: High Mem Options |
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Hi Alan,
That i can't understand i when the system going to the protect mode. How the system can use over 4GB memory ? On freebsd, when you have over 4GB the system say "XGB of XGB skiped..." (i'v got a machine with 8GB running on freebsd and without memory spare)
Best regards, Michael
On 05 Mar 2003 13:36:02 +0000 Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
> 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). > > - > 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/ - 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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