KVM: arm64: Count KVM s2 mmu usage in nVHE protected mode

When using the nVHE protected mode, the stage-2 page tables are handled by
the hypervisor, but are backed by memory donated by the host. That memory
is accounted during the donation (add to the vCPUs hyp_memcache) under
secondary pagetable stats.

Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
6 files changed