On 04/06/2010 10:57 PM, Venkatram Tummala wrote:
quoted text > Just a note Chetan.
>
> We can't exactly say that we require "page table settings" to map that
> 896 MB of physical ram. It is an identity mapped segment (1-1 mapping).
> So, we dont require the "page tables". Virtual address will be equal to
> Physical Address + Page Offset. It is just an addition of offset
>
No, we still need page tables for the identity-mapped segment.
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
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Messages in current thread:
Re: why choose 896MB to the start point of ZONE_HIGHMEM , H. Peter Anvin , (Tue Apr 6, 11:04 pm)