[PATCH v3 08/10] KVM: arm64: Handle FFA_MEM_LEND calls from the host

[Will Deacon]

On Sat, Jul 12, 2025 at 10:36:24PM +0900, DaeRo Lee wrote:
> > Handle FFA_MEM_LEND calls from the host by treating them identically to
> > FFA_MEM_SHARE calls for the purposes of the host stage-2 page-table, but
> > forwarding on the original request to EL3.
> 
> I have a question about your patch.
> Does treating FFA_MEM_LEND as identical to FFA_MEM_SHARE imply that
> the host can still access the memory even after it has been lent?

Only if your TZ implementation is broken and relies on the NS hypervisor
for isolation.

Will