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SubjectRe: [PATCH 1/3] KVM: x86: expose UMWAIT/UMONITOR/TPAUSE CPU features into VM.
Hi Jingqi,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on kvm/linux-next]
[also build test ERROR on v4.18-rc4 next-20180709]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Jingqi-Liu/KVM-x86-expose-a-few-new-features-into-VM/20180710-171958
base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
config: x86_64-randconfig-s0-07101819 (attached as .config)
compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

All errors (new ones prefixed by >>):

arch/x86/kvm/cpuid.c: In function '__do_cpuid_ent':
>> arch/x86/kvm/cpuid.c:68:18: error: 'X86_FEATURE_WAITPKG' undeclared (first use in this function)
#define F(x) bit(X86_FEATURE_##x)
^
arch/x86/kvm/cpuid.c:409:17: note: in expansion of macro 'F'
F(CLDEMOTE) | F(WAITPKG);
^
arch/x86/kvm/cpuid.c:68:18: note: each undeclared identifier is reported only once for each function it appears in
#define F(x) bit(X86_FEATURE_##x)
^
arch/x86/kvm/cpuid.c:409:17: note: in expansion of macro 'F'
F(CLDEMOTE) | F(WAITPKG);
^

vim +/X86_FEATURE_WAITPKG +68 arch/x86/kvm/cpuid.c

4ff41732 Paolo Bonzini 2014-02-24 67
5c404cab Paolo Bonzini 2014-12-03 @68 #define F(x) bit(X86_FEATURE_##x)
5c404cab Paolo Bonzini 2014-12-03 69

:::::: The code at line 68 was first introduced by commit
:::::: 5c404cabd1b5c125653ac573cb9284bdf42b658a KVM: x86: use F() macro throughout cpuid.c

:::::: TO: Paolo Bonzini <pbonzini@redhat.com>
:::::: CC: Paolo Bonzini <pbonzini@redhat.com>

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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