On 2/2/2018 2:03 PM, kbuild test robot wrote:
Hi Janakarajan,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on tip/x86/core]
[also build test WARNING on v4.15]
[cannot apply to kvm/linux-next next-20180202]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]
This patch uses functions defined in commit 'd6321d493319bfd406c484e8359c6101cbda39d3 KVM: x86: generalize guest_cpuid_has_ helpers'.

         # apt-get install sparse
         make ARCH=x86_64 allmodconfig
         make C=1 CF=-D__CHECK_ENDIAN__

sparse warnings: (new ones prefixed by >>)

arch/x86/kvm/cpuid.c:58:6: sparse: symbol 'perf_ext_supported' was not 
declared. Should it be
Please review and possibly fold the followup patch.

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