hv_call_unmap_gpa_pages
return hv_call_unmap_gpa_pages(region->partition->pt_id,
int hv_call_unmap_gpa_pages(u64 partition_id, u64 gpa_target, u64 page_count,
hv_call_unmap_gpa_pages(partition_id, gfn, done, unmap_flags);