rmp_make_shared
int rmp_make_shared(u64 pfn, enum pg_level level);
if (KVM_BUG_ON(rmp_make_shared(pfn, level), kvm)) {
rc = rmp_make_shared(pfn, use_2m_update ? PG_LEVEL_2M : PG_LEVEL_4K);
EXPORT_SYMBOL_GPL(rmp_make_shared);
ret = rmp_make_shared(__phys_to_pfn(paddr), PG_LEVEL_4K);
return rmp_make_shared(pfn, PG_LEVEL_4K);