Re: Getting big areas of memory, in 2.3.x?

Ingo Molnar
1999-12-09T23:21:18Z

On Thu, 9 Dec 1999, Kanoj Sarcar wrote:

> Well, at least in 2.3, kernel data (and page caches) are below 1G,
> which means there's a lot of memory possible out there with
> references only from user memory. Shm page references are
> revokable too. [...]

we already kindof replace pages, see replace_with_highmem(). Reverse ptes
do help, but are not a necessity to get this. Neither reverse ptes, nor
any other method guarantees that a large amount of continuous RAM can be
allocated. Only boot-time allocation can be guaranteed.

-- mingo