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 Mapping all physical memory 
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Joined: Fri Aug 20, 2010 10:04 pm
Posts: 41
Post Mapping all physical memory

OSDev is forever spewing slander. LoseThos identity maps all physical memory and never touches page tables afterward. It is obviously optimal performance-wise.

Just remember -- for every memory access with paging enabled, there are 4-5 memory accesses because it has to access 3-4 levels of page table memory. We were taught to count memory accesses to tell how fast code is, so you have 1/4 the memory accesses without paging.

How do you like that :lol:

Mon Jan 24, 2011 5:05 am
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Joined: Sat Jul 25, 2009 7:44 am
Posts: 274
Location: United Kingdom
Post Re: Mapping all physical memory

I hoped I would't have to point this out to you, but this is not a place for having a pissing contest with

Please refrain from complaining about all the time or do it in general...

Thank you for reading,

Kieran C G Foot

Mon Jan 24, 2011 8:05 am
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