[PATCH v10 4/8] KVM: PPC: Radix changes for secure guest

[Paul Mackerras]

On Mon, Nov 04, 2019 at 09:47:56AM +0530, Bharata B Rao wrote:
> - After the guest becomes secure, when we handle a page fault of a page
>   belonging to SVM in HV, send that page to UV via UV_PAGE_IN.
> - Whenever a page is unmapped on the HV side, inform UV via UV_PAGE_INVAL.
> - Ensure all those routines that walk the secondary page tables of
>   the guest don't do so in case of secure VM. For secure guest, the
>   active secondary page tables are in secure memory and the secondary
>   page tables in HV are freed when guest becomes secure.

Why do we free the page tables?  Just to save a little memory?  It
feels like it would make things more fragile.

Also, I don't see where the freeing gets done in this patch.

Paul.