linux-kernel - Re: [PATCH v3 6/8] KVM: x86/mmu: Skip rmap operations if rmaps not allocated

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Message-ID: <202105070721.09d66qdP-lkp@intel.com>
Date:   Fri, 7 May 2021 07:07:05 +0800
From:   kernel test robot <lkp@...el.com>
To:     Ben Gardon <bgardon@...gle.com>, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Cc:     kbuild-all@...ts.01.org, Paolo Bonzini <pbonzini@...hat.com>,
        Peter Xu <peterx@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Peter Shier <pshier@...gle.com>,
        Yulei Zhang <yulei.kernel@...il.com>,
        Wanpeng Li <kernellwp@...il.com>,
        Xiao Guangrong <xiaoguangrong.eric@...il.com>,
        Kai Huang <kai.huang@...el.com>
Subject: Re: [PATCH v3 6/8] KVM: x86/mmu: Skip rmap operations if rmaps not
 allocated

Hi Ben,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on kvm/queue]
[also build test WARNING on tip/master linus/master next-20210506]
[cannot apply to linux/master v5.12]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Ben-Gardon/Lazily-allocate-memslot-rmaps/20210507-024533
base:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue
config: x86_64-randconfig-s021-20210506 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-341-g8af24329-dirty
        # https://github.com/0day-ci/linux/commit/c7c4f34907c708172e52fb04dc753a917a5eebb6
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Ben-Gardon/Lazily-allocate-memslot-rmaps/20210507-024533
        git checkout c7c4f34907c708172e52fb04dc753a917a5eebb6
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=x86_64 

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


sparse warnings: (new ones prefixed by >>)
   arch/x86/kvm/mmu/mmu.c: note: in included file (through include/linux/kvm_host.h, arch/x86/kvm/irq.h):
>> arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition
>> arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition
>> arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition
>> arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition
>> arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition
>> arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition
>> arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition
>> arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition
>> arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition
>> arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition
>> arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition
>> arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition
>> arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition

vim +1871 arch/x86/include/asm/kvm_host.h

fb04a1eddb1a65 Peter Xu   2020-09-30  1870  
fac0d516d29b67 Ben Gardon 2021-05-06 @1871  inline bool kvm_memslots_have_rmaps(struct kvm *kvm);
fac0d516d29b67 Ben Gardon 2021-05-06  1872  

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

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