News for hackers. Stuff that matters.

A comment on Pointers Are Complicated, or What’s in a Byte?. Parent comment

Re:Pointers Are Complicated, or What’s in a Byte? by _pmf_ on Wednesday July 25, 2018 @05:54AM (#17608071)
> There is no sane way for an operating system to switch out program heap pages after they have been mapped.

They'll even move the page to the harddisk if necessary. Or am I misunderstanding what you're asking?

[ Parent | on HN ]
Re:Pointers Are Complicated, or What’s in a Byte? by gmueckl on Wednesday July 25, 2018 @07:28AM (#17608430)
The OS can move the content of the pages in physical memory, but it will not make the page table entry point to a page with different content after that point.
[ Parent | on HN ]