Re: Kernel Address space

[Philip Blundell]

>       Does linux-arm reserve some of the virtual address space for the
>kernel? If so how much and where?

Depends on exactly what you're thinking of.  Broadly, the page from 0-0xfff 
and the area from C0000000-FFFFFFFF are reserved for the kernel's use.  Of 
that, the area at C0000000-CFFFFFFF is used for direct-mapped RAM and 
everything above that is I/O.

1000-BFFFFFFF is available for user programs.

Mark van D.'s "co285" architecture changes this around somewhat, though.  He 
puts the kernel rather a lot lower down to get more space for PCI mappings.

p.


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