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Large Physical Address Extension
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RAVEENDRA TALABATTULA
over 7 years ago
Note: This was originally posted on 19th November 2012 at http://forums.arm.com
Hi,
Can some body explain me about the Large Physical address extension in ARM ? i.e How it is implemented ? What are the registers that are invloved?
what about the page tables?
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Martin Weidmann
over 7 years ago
Note: This was originally posted on 20th November 2012 at
http://forums.arm.com
For the detailed information (register, table formats, etc....) you will need the ARM Architecture Reference Manual, Rev C or C.b. You can get this from the documentation section of ARM's website (called infocenter).
For the basic concept...In ARMv7 ( and earlier) addresses as used by code are called virtual addresses (VA) and are always 32-bit. LPAE allows these 32-bit VAs to be translated into physical addresses that ate up to 40 bits long
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Martin Weidmann
over 7 years ago
Note: This was originally posted on 20th November 2012 at
http://forums.arm.com
For the detailed information (register, table formats, etc....) you will need the ARM Architecture Reference Manual, Rev C or C.b. You can get this from the documentation section of ARM's website (called infocenter).
For the basic concept...In ARMv7 ( and earlier) addresses as used by code are called virtual addresses (VA) and are always 32-bit. LPAE allows these 32-bit VAs to be translated into physical addresses that ate up to 40 bits long
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