Dave Hansen wrote:
> Carl-Daniel Hailfinger wrote:
>
>>Cool. Sorry to be pestering about the 64-bit limits, but can we really
>>use 2^64 bytes of memory on ia64/ppc64/x86-64 etc.? (AFAIK, 64-bit
>>arches don't suffer from a small ZONE_LOWMEM.)
>
> [...]
> Don't forget that highmem starts to be needed before the 4G boundary.
> The kernel has only 1GB of virtual space (look for PAGE_OFFSET, which
> defines it), which means that you start needing to pull all of the
> highmem trickery before you get to the actual limits.
It seems I misunderstood the concept of highmem. I thought highmem was
not needed on 64-bit arches. Thanks for pointing that out to me.
>
> Nobody knows how far it will go. It's fairly safe to say that, at this
> rate, Linux will keep up with whatever hardware anyone produces.
That is the answer the original poster was looking for.
> Unless, of course, someone gets even more perverse than PAE. :)
hehe ;-) Can you say PAE in userspace?
Regards,
Carl-Daniel
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This archive was generated by hypermail 2b29 : Wed Apr 30 2003 - 22:00:30 EST