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Thread-Topic: Large array in KVM
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From: "Gerald Heinig" <gheinig@marvell.com>
To: "Sonja Milicic" <tanarri@geri.cc.fer.hr>,
	<freebsd-hackers@freebsd.org>
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Subject: RE: Large array in KVM
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Hi Sonja,

> Hi everyone.
>=20
> 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