Re: Moving memory in VM?

mremap? Or what am I missing?

   Johnny

On 2024-07-19 18:41, Mouse wrote:
> Is there any way to move memory within a process?  That is, I have a
> bunch of valid pages at addresses [A..B) and I want to move those pages
> to [C..C+(B-A)).
> 
> The principal use case I have at the moment has the initial mapping
> mapped MAP_ANON, with C fixed and mmap()-style semantics for anything
> that was in the target range to start with.  It's OK if the [A..B)
> range is unmapped in the process, and it's OK to requires that the old
> and new address ranges not overlap.  (I'm trying to implement an
> alternative memory allocator and want realloc() for multi-page blocks
> to be faster than copying all the bytes.)
> 
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