[intel-tdx:guest-attest 5/6] ./usr/include/misc/tdx.h:39:2: error: unknown type name 'size_t'

[kernel test robot]

tree:   https://github.com/intel/tdx.git guest-attest
head:   9247fade9db5ae6eb183b2f92fdedb898282376a
commit: 054b22e81e88379a5a8459c19e89a335531c1bdd [5/6] platform/x86: intel_tdx_attest: Add TDX Guest attestation interface driver
config: x86_64-randconfig-a016 (https://download.01.org/0day-ci/archive/20220401/202204011037.5M42EV06-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 881350a92d821d4f8e4fa648443ed1d17e251188)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel/tdx/commit/054b22e81e88379a5a8459c19e89a335531c1bdd
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx guest-attest
        git checkout 054b22e81e88379a5a8459c19e89a335531c1bdd
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

   In file included from <built-in>:1:
>> ./usr/include/misc/tdx.h:38:11: error: expected ';' at end of declaration list
           void *buf __user;
                    ^
                    ;
>> ./usr/include/misc/tdx.h:39:2: error: unknown type name 'size_t'
           size_t len;
           ^
   2 errors generated.

-- 
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