linux-kernel - [intel-tdx:kvm-upstream-workaround 85/350] usr/include/asm/kvm.h:606:22: warning: field 'cpuid' with variable sized type 'struct kvm_cpuid2' not at the end of a struct or class is a GNU extension

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Message-ID: <202210010210.Lm4PzkSl-lkp@intel.com>
Date:   Sat, 1 Oct 2022 02:28:41 +0800
From:   kernel test robot <lkp@...el.com>
To:     Xiaoyao Li <xiaoyao.li@...el.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org,
        Isaku Yamahata <isaku.yamahata@...el.com>
Subject: [intel-tdx:kvm-upstream-workaround 85/350]
 usr/include/asm/kvm.h:606:22: warning: field 'cpuid' with variable sized
 type 'struct kvm_cpuid2' not at the end of a struct or class is a GNU
 extension

tree:   https://github.com/intel/tdx.git kvm-upstream-workaround
head:   699e64cb199ffac8cf4c8eff2e96fed94fcf5a0b
commit: cbbf0df3758b41c82eb3fe638b0bf0d5124834f6 [85/350] KVM: TDX: initialize VM with TDX specific parameters
config: i386-randconfig-a015-20220926
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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/cbbf0df3758b41c82eb3fe638b0bf0d5124834f6
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx kvm-upstream-workaround
        git checkout cbbf0df3758b41c82eb3fe638b0bf0d5124834f6
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   In file included from <built-in>:1:
   In file included from ./usr/include/linux/kvm.h:15:
>> usr/include/asm/kvm.h:606:22: warning: field 'cpuid' with variable sized type 'struct kvm_cpuid2' not at the end of a struct or class is a GNU extension [-Wgnu-variable-sized-type-not-at-end]
                           struct kvm_cpuid2 cpuid;
                                             ^
   1 warning generated.
--
   In file included from <built-in>:1:
>> ./usr/include/asm/kvm.h:606:22: warning: field 'cpuid' with variable sized type 'struct kvm_cpuid2' not at the end of a struct or class is a GNU extension [-Wgnu-variable-sized-type-not-at-end]
                           struct kvm_cpuid2 cpuid;
                                             ^
   1 warning generated.

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

View attachment "config" of type "text/plain" (156942 bytes)