This is xnu-11215.1.10. See this file in:
// declaration of mach_memory_object_memory_entry in mach_host.defs
// in 32-bit userspace is incompatible with the kernel's definition
// rdar://117927965 (mach_memory_object_memory_entry() declaration does not match its definition)
subsystem KernelServer replacement_mach_host 200;
#include <mach/std_types.defs>
#include <mach/mach_types.defs>
#include <mach/clock_types.defs>
#include <mach_debug/mach_debug_types.defs>
skip; // host_info
skip; // host_kernel_version
skip; // host_page_size
routine replacement_mach_memory_object_memory_entry(
host :host_t;
internal :boolean_t;
size :mach_vm_size_t; // was vm_size_t
permission :vm_prot_t;
pager :memory_object_t;
out entry_handle :mach_port_move_send_t);