Re: [PATCH v17 18/23] platform/x86: Intel SGX driver

From: Jarkko Sakkinen
Date: Tue Dec 18 2018 - 08:27:25 EST

On Mon, Dec 17, 2018 at 09:02:03PM -0800, Andy Lutomirski wrote:
> That's what unmap_mapping_range(), etc do for you, no? IOW make a
> struct address_space that represents the logical enclave address
> space, i.e. address 0 is the start and the pages count up from there.
> You can unmap pages whenever you want, and the core mm code will take
> care of zapping the pages from all vmas referencing that
> address_space.

OK, so it does. Did not have time to look at it last night (about
3AM) :-) Yes, we could use that to do the N process zapping.

Based on this discussion I can take the first steps with the swapping

And yeah, I don't think we need anon inode for this one. Can just use
the dev inode (did not check in detail but on the surface looks like