COMMPAGE_ENTRY_X86_THREAD_EXIT
args[0] = ((addr_t*)commPageAddress)[COMMPAGE_ENTRY_X86_THREAD_EXIT]
position = fill_commpage_compat_entry(COMMPAGE_ENTRY_X86_THREAD_EXIT,
codeAddr = ((addr_t*)commPageAddress)[COMMPAGE_ENTRY_X86_THREAD_EXIT]
COMMPAGE_ENTRY_X86_THREAD_EXIT, (const void*)x86_userspace_thread_exit,