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Index > OS Construction > Can cr3 pointer be put on video memory?

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fonolite



Joined: 14 Dec 2005
Posts: 32
fonolite
Paging Tables, Directories, etc can be put on some part of
LFB (Linear Frame Buffer)?

With text mode in dos, most of video memory under 4GB is available
and most data does not change, as you know.

Is that possible with about 10~20 MB of LFB?

Anyone try this?
Post 29 Apr 2010, 01:20
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17338
Location: In your JS exploiting you and your system
revolution
Yes, of course, it is all just memory to the CPU.

Although I can't imagine why you would want to do that?
Post 29 Apr 2010, 02:19
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fonolite



Joined: 14 Dec 2005
Posts: 32
fonolite
Thanks revolution.

I need a large memory of Paging Tables under 640KB with long mode.

I'll put a huge application over 1MB and some curiosity.

With cr3 on video memory, any performance can be downgraded
with TLB in comparison with main memory?
Post 29 Apr 2010, 02:32
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