# Re: \[RESEND RFC PATCH 0/5\] Remote mapping

- From: Paolo Bonzini \<pbonzini@redhat.com\>
- Date: 2020-09-04 20:09:20 
- List: linux-api
- Page: https://ratatoskr.run/linux-api/2020/09/6503110
- Thread: https://ratatoskr.run/linux-mm/2020/09/6503085/t.md

```text
On 04/09/20 21:39, Andy Lutomirski wrote:
> I'm a little concerned that it's actually too clever and that maybe a
> more straightforward solution should be investigated.  I personally
> rather dislike the KVM model in which the guest address space mirrors
> the host (QEMU) address space rather than being its own thing.  In
> particular, the current model means that extra-special-strange
> mappings like SEV-encrypted memory are required to be present in the
> QEMU page tables in order for the guest to see them.
> 
> (If I had noticed that last bit before it went upstream, I would have
> NAKked it.  I would still like to see it deprecated and ideally
> eventually removed from the kernel.  We have absolutely no business
> creating incoherent mappings like this.)

NACK first and ask second, right Andy?  I see that nothing has changed
since Alan Cox left Linux.

Paolo

```