Large array in KVM

[Gerald Heinig]

Hi Sonja,

> Hi everyone.
> 
> I'm working on a kernel module that needs to maintain a large
structure
> in memory. As this structure could grow too big to be stored in
memory,
> it would be good to offload parts of it to the disk. What would be the
> best way to do this? Could using a memory-mapped file help?

How about implementing your code as a system call, which is called from
a process that maps a large file into memory, as you suggested above.
I presume you'd have to handle the question of whether or not your pages
are in memory yourself, ie. pretty much like any other system call.

Interesting question.

Cheers,
Gerald