linux-kernel - arch/x86/kvm/cpuid.c:128:26: error: no previous prototype for 'kvm_find_kvm_cpuid

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Message-ID: <202111141627.4XN1xX57-lkp@intel.com>
Date:   Sun, 14 Nov 2021 16:39:34 +0800
From:   kernel test robot <lkp@...el.com>
To:     Paul Durrant <pdurrant@...zon.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: arch/x86/kvm/cpuid.c:128:26: error: no previous prototype for
 'kvm_find_kvm_cpuid_features'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   c8c109546a19613d323a319d0c921cb1f317e629
commit: 760849b1476c94da4cca5d3a5f0a1f64ffc92ba4 KVM: x86: Make sure KVM_CPUID_FEATURES really are KVM_CPUID_FEATURES
date:   3 days ago
config: i386-buildonly-randconfig-r003-20211111 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=760849b1476c94da4cca5d3a5f0a1f64ffc92ba4
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 760849b1476c94da4cca5d3a5f0a1f64ffc92ba4
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

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

All errors (new ones prefixed by >>):

>> arch/x86/kvm/cpuid.c:128:26: error: no previous prototype for 'kvm_find_kvm_cpuid_features' [-Werror=missing-prototypes]
     128 | struct kvm_cpuid_entry2 *kvm_find_kvm_cpuid_features(struct kvm_vcpu *vcpu)
         |                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +/kvm_find_kvm_cpuid_features +128 arch/x86/kvm/cpuid.c

   127	
 > 128	struct kvm_cpuid_entry2 *kvm_find_kvm_cpuid_features(struct kvm_vcpu *vcpu)
   129	{
   130		u32 base = vcpu->arch.kvm_cpuid_base;
   131	
   132		if (!base)
   133			return NULL;
   134	
   135		return kvm_find_cpuid_entry(vcpu, base | KVM_CPUID_FEATURES, 0);
   136	}
   137	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (36043 bytes)