call64_from_32 114 tools/testing/selftests/x86/test_syscall_vdso.c extern unsigned long call64_from_32(void (*function)(void)); call64_from_32 251 tools/testing/selftests/x86/test_syscall_vdso.c call64_from_32(poison_regs64); call64_from_32 299 tools/testing/selftests/x86/test_syscall_vdso.c call64_from_32(get_regs64);