Understanding 52-bit virtual address support in the Arm64 kernel

Posted By on Dec 16, 2020 |

Puzzle pieces coming together to form a computer screen

After 64-bit hardware became available, the need to handle larger address spaces (greater than 232 bytes) became obvious. With some vendors now offering servers with 64TiB (or more) of memory, x86_64 and arm64 now allow addressing adress spaces greater than 248 bytes (available with the default 48-bit address support).

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Author: dasuberworm

Standing just over 2 meters and hailing from о́стров Ратма́нова, Dasuberworm is a professional cryptologist, entrepreneur and cage fighter. When he's not breaking cyphers and punching people in the face, Das enjoys receiving ominous DHL packages at one of his many drop sites in SE Asia.

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