Re: Kernel vs user memory

[sidc7 <siddhartha.chhabra@gmail.com>]

One last question, which one of the two lowmem or highmem kernel is most
commonly used on contemporary linux boxes. I am guessing highmem kernel ?

Thanks for the quick replies, helped a lot


H. Peter Anvin wrote:
> 
> sidc7 wrote:
>> If I am not mistaken, Linux kernel is a high memory kernel, hence for
>> Linux
>> kernel, nothing will be mapped to the kernel space, other than the memory
>> beyond 896MB which is the kernel's virtual address space. Am I right on
>> this?
> 
> It's a compilation option, and depends on the architecture.  What you
> described is true for an i386 kernel compiled as a highmem kernel.  On
> the other hand, a 64 bit kernel is *never* highmem.
> 
> 	-hpa
> 
> -- 
> H. Peter Anvin, Intel Open Source Technology Center
> I work for Intel.  I don't speak on their behalf.
> 
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