Multiple addresses translate to a single physical address
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Multiple addresses translate to a single physical address by Ciro Santilli 34 Updated 2024-10-28 Created 1970-01-01
The same linear address can translate to different physical addresses for different processes, depending only on the value inside
cr3
.Both linear addresses
00002 000
from process 1 and 00004 000
from process 2 point to the same physical address 00003 000
. This is completely allowed by the hardware, and it is up to the operating system to handle such cases.This often in normal operation because of Copy-on-write (COW), which be explained elsewhere.
Such mappings are sometime called "aliases".