linux-kernel - Re: [PATCH] x86/kvm: handle the failure of __pv_cpu

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Message-ID: <202205101754.d5Mxymtk-lkp@intel.com>
Date:   Tue, 10 May 2022 17:25:49 +0800
From:   kernel test robot <lkp@...el.com>
To:     Wanpeng Li <kernellwp@...il.com>, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Cc:     kbuild-all@...ts.01.org, Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>
Subject: Re: [PATCH] x86/kvm: handle the failure of __pv_cpu_mask allocation

Hi Wanpeng,

I love your patch! Perhaps something to improve:

[auto build test WARNING on kvm/master]
[also build test WARNING on tip/master linus/master linux/master v5.18-rc6 next-20220509]
[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/intel-lab-lkp/linux/commits/Wanpeng-Li/x86-kvm-handle-the-failure-of-__pv_cpu_mask-allocation/20220422-175106
base:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git master
config: i386-randconfig-a004-20220502 (https://download.01.org/0day-ci/archive/20220510/202205101754.d5Mxymtk-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/329f0c869cf176505509f65e95e47999a9e97b3b
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Wanpeng-Li/x86-kvm-handle-the-failure-of-__pv_cpu_mask-allocation/20220422-175106
        git checkout 329f0c869cf176505509f65e95e47999a9e97b3b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/kernel/

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

All warnings (new ones prefixed by >>):

>> arch/x86/kernel/kvm.c:49:20: warning: 'orig_apic' defined but not used [-Wunused-variable]
      49 | static struct apic orig_apic;
         |                    ^~~~~~~~~


vim +/orig_apic +49 arch/x86/kernel/kvm.c

    48	
  > 49	static struct apic orig_apic;
    50	static int kvmapf = 1;
    51	

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