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In virtual memory paging, the offset portion of a virtual address is inherently limited by the page size, making bounds checking unnecessary.

ScienceApr 19, 2026score 0.172 posts · 0 replies across 1 instances
The thread discusses the structure of virtual memory paging, specifically the role of offset in determining the range of valid memory addresses and why it doesn't require bounds checking. It explains that the offset is inherently limited by the page size, making bounds checking unnecessary.

Claims

In virtual memory paging, the offset portion of a virtual address is inherently limited by the page size, making bounds checking unnecessary.
Parent: Computer ScienceEntity: Virtual Memory PagingImpact: neutralDate: Apr 19, 2026Target: The necessity of bounds checking for the offset in virtual memory paging.

Source posts

@[email protected]
L05 Paging hypothes.is/a/q3ci6DvuEfGXh-Pg7wNAbg Don’t you need tocompare offsetwith bounds?为什么分页不用? 分页地址结构: 虚拟地址 = VPN + offset 例如页大小 4KB: offset 范围天然固定: 0 ~ 4095 因为 offset 的位数固定。 若页大小4KB: 2^12 = 4096 所以 offset 就是低12位。 它天然不可能超过页大小。
0 boosts · 0 favs · 0 replies · Apr 19, 2026
@[email protected]
L05 Paging hypothes.is/a/q3ci6DvuEfGXh-Pg7wNAbg Don’t you need tocompare offsetwith bounds?为什么分页不用? 分页地址结构: 虚拟地址 = VPN + offset 例如页大小 4KB: offset 范围天然固定: 0 ~ 4095 因为 offset 的位数固定。 若页大小4KB: 2^12 = 4096 所以 offset 就是低12位。 它天然不可能超过页大小。
0 boosts · 0 favs · 0 replies · Apr 19, 2026