Re: [PATCH] xen/mm: Introduce CONFIG_M2P and provide common fallback logic

[Jan Beulich <jbeulich@xxxxxxxx>]

On 24.08.2020 20:15, Andrew Cooper wrote:
> I'm pretty sure the mfn_to_gmfn() stub is bogus before and after this change.
> The two uses in common code are getdomaininfo and in memory_exchange(), which
> result in junk.

It's been a long time back that I think I did suggest to restrict
memory_exchange() to non-translated guests. I don't recall what
the arguments against this were, but I'm quite sure it wasn't
merely "it alters the ABI for such guests".

Jan