Re: doubt about ZONE_HIMEM

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On Monday 09 April 2007 11:41:01 Sandeep Sanjay Patil wrote:
> > swapped? As i understand it, if RAM is under 896MB, since ZONE_NORMAL
> > uses logical mappings it will mean the ZONE_NORMAL will be lower than
> > 896MB, how much is determined how? and ZONE_HIMEM, perhaps non-existant?
>
> 	There wont be ZONE_HIGHMEM for phys memory <896MB and if you have
> anything more that that... its HIGH MEM. And page frames above 896
> MB(i.e. who are supposed to be in HIGHMEM region) can be swapped out,
> coz they can easily be in a process address space ..right???

Yes it did help. 10x. 
Still, if i have only 800MB RAM or 512MB RAM, how does the allocation between 
kernel protected memory and user mode allocation goes? 256MB for kernel and 
the rest for user? Or mixed? In that (mixed) case how will the processor know 
this area is protected for kernel mode?


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