|Bona Fide OS Development
|Mapping all physical memory
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|Author:||losethos [ Mon Jan 24, 2011 5:05 am ]|
|Post subject:||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
|Author:||Kieran [ Mon Jan 24, 2011 8:05 am ]|
|Post subject:||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 OSDev.org.
Please refrain from complaining about OSDev.org all the time or do it in general...
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