linux-kernel - [intel-tdx:kvm-upstream-workaround 61/350] arch/x86/kvm/mmu/mmu.c:6991:6: warning: no previous prototype for function 'kvm_arch_update_mem

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Message-ID: <202209302345.b4kMgeZv-lkp@intel.com>
Date:   Fri, 30 Sep 2022 23:10:54 +0800
From:   kernel test robot <lkp@...el.com>
To:     Chao Peng <chao.p.peng@...ux.intel.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 61/350]
 arch/x86/kvm/mmu/mmu.c:6991:6: warning: no previous prototype for function
 'kvm_arch_update_mem_attr'

tree:   https://github.com/intel/tdx.git kvm-upstream-workaround
head:   699e64cb199ffac8cf4c8eff2e96fed94fcf5a0b
commit: fab0f69e33de02a86f43e8ed45f22163db4ec4a0 [61/350] KVM: Update lpage info when private/shared memory are mixed
config: i386-randconfig-a013-20220926
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/fab0f69e33de02a86f43e8ed45f22163db4ec4a0
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx kvm-upstream-workaround
        git checkout fab0f69e33de02a86f43e8ed45f22163db4ec4a0
        # 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 arch/x86/kvm/

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 >>):

   arch/x86/kvm/mmu/mmu.c:6908:22: error: no member named 'mem_attr_array' in 'struct kvm'
           XA_STATE(xas, &kvm->mem_attr_array, start);
                          ~~~  ^
   include/linux/xarray.h:1369:36: note: expanded from macro 'XA_STATE'
           struct xa_state name = __XA_STATE(array, index, 0, 0)
                                             ^~~~~
   include/linux/xarray.h:1348:8: note: expanded from macro '__XA_STATE'
           .xa = array,                                    \
                 ^~~~~
   arch/x86/kvm/mmu/mmu.c:6914:14: error: use of undeclared identifier 'KVM_MEM_ATTR_SHARED'
           if (attr == KVM_MEM_ATTR_SHARED) {
                       ^
   arch/x86/kvm/mmu/mmu.c:6999:22: error: use of undeclared identifier 'KVM_MEM_ATTR_PRIVATE'
           WARN_ONCE(!(attr & (KVM_MEM_ATTR_PRIVATE | KVM_MEM_ATTR_SHARED)),
                               ^
   arch/x86/kvm/mmu/mmu.c:6999:45: error: use of undeclared identifier 'KVM_MEM_ATTR_SHARED'
           WARN_ONCE(!(attr & (KVM_MEM_ATTR_PRIVATE | KVM_MEM_ATTR_SHARED)),
                                                      ^
>> arch/x86/kvm/mmu/mmu.c:6991:6: warning: no previous prototype for function 'kvm_arch_update_mem_attr' [-Wmissing-prototypes]
   void kvm_arch_update_mem_attr(struct kvm *kvm, unsigned int attr,
        ^
   arch/x86/kvm/mmu/mmu.c:6991:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void kvm_arch_update_mem_attr(struct kvm *kvm, unsigned int attr,
   ^
   static 
   1 warning and 4 errors generated.


vim +/kvm_arch_update_mem_attr +6991 arch/x86/kvm/mmu/mmu.c

  6990	
> 6991	void kvm_arch_update_mem_attr(struct kvm *kvm, unsigned int attr,

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

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