Re: Big memory, no struct page allocation

[David Chow <davidchow@shaolinmicro.com>]

William Lee Irwin III wrote:

>William Lee Irwin III wrote:
>  
>
>>>Try allocating it at boot-time with the bootmem allocator.
>>>      
>>>
>
>On Sun, Jun 23, 2002 at 11:31:28PM +0800, David Chow wrote:
>  
>
>>Thanks for suggestions, you mean this will allow no struct page or can 
>>use memory more than 1GB? Please make clear on direction, I would love 
>>to know. Thanks.
>>    
>>
>
>On 32-bit machines with 3:1 process address space splits yes.
>
>In this case you're far better off playing games with the highmem
>initialization in order to slice the memory out of there and kmap it.
>
>
>Cheers,
>Bill
>  
>
In other words, even I have 2G physical memory, I cannot have benefits 
of using all memory for pagecache, this also means I cannot create any 
cache beyong a 1G size in kernel. That's a pitty for 32-bit systems, 
with himem, how does it work?

David


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