Hello Paolo,
This issue is caused by wrong code base, the test apply my patch based on Linux 4.14 commit ID
#test code base
commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4
Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Sun Nov 12 10:46:13 2017 -0800
Linux 4.14
My patch dependency ID:c128dbfa0f879f8ce7b79054037889b0b2240728, which is more newer than Linux 4.14.
This is reason why the build can't find those definitions.
Regards,
Yang
-----Original Message-----
From: Zhong, Yang
Sent: Friday, November 24, 2017 12:30 PM
To: lkp <lkp@xxxxxxxxx>
Cc: kbuild-all@xxxxxx; kvm@xxxxxxxxxxxxxxx; pbonzini@xxxxxxxxxx
Subject: RE: [PATCH] KVM: Expose new cpu features to guest
Hello all,
My code base is newest kvm.git and my patch is based on commit ID: c128dbfa0f879f8ce7b79054037889b0b2240728,
which has define those variables, Many thanks!
Regards,
Yang
-----Original Message-----
From: lkp
Sent: Friday, November 24, 2017 10:36 AM
To: Zhong, Yang <yang.zhong@xxxxxxxxx>
Cc: kbuild-all@xxxxxx; kvm@xxxxxxxxxxxxxxx; pbonzini@xxxxxxxxxx; Zhong, Yang <yang.zhong@xxxxxxxxx>
Subject: Re: [PATCH] KVM: Expose new cpu features to guest
Hi Yang,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on v4.14]
[cannot apply to kvm/linux-next next-20171122] [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/Yang-Zhong/KVM-Expose-new-cpu-features-to-guest/20171124-085014
config: i386-randconfig-x001-201747 (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=i386
All error/warnings (new ones prefixed by >>):
arch/x86/kvm/cpuid.c: In function '__do_cpuid_ent':
>> arch/x86/kvm/cpuid.c:68:18: error: 'X86_FEATURE_AVX512_VBMI2'
>> undeclared (first use in this function)
#define F(x) bit(X86_FEATURE_##x)
^
>> arch/x86/kvm/cpuid.c:391:3: note: in expansion of macro 'F'
F(AVX512_VBMI2) | F(GFNI) | F(VAES) | F(VPCLMULQDQ) |
^
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:391:3: note: in expansion of macro 'F'
F(AVX512_VBMI2) | F(GFNI) | F(VAES) | F(VPCLMULQDQ) |
^
>> arch/x86/kvm/cpuid.c:68:18: error: 'X86_FEATURE_GFNI' undeclared
>> (first use in this function)
#define F(x) bit(X86_FEATURE_##x)
^
arch/x86/kvm/cpuid.c:391:21: note: in expansion of macro 'F'
F(AVX512_VBMI2) | F(GFNI) | F(VAES) | F(VPCLMULQDQ) |
^
>> arch/x86/kvm/cpuid.c:68:18: error: 'X86_FEATURE_VAES' undeclared
>> (first use in this function)
#define F(x) bit(X86_FEATURE_##x)
^
arch/x86/kvm/cpuid.c:391:31: note: in expansion of macro 'F'
F(AVX512_VBMI2) | F(GFNI) | F(VAES) | F(VPCLMULQDQ) |
^
>> arch/x86/kvm/cpuid.c:68:18: error: 'X86_FEATURE_VPCLMULQDQ'
>> undeclared (first use in this function)
#define F(x) bit(X86_FEATURE_##x)
^
arch/x86/kvm/cpuid.c:391:41: note: in expansion of macro 'F'
F(AVX512_VBMI2) | F(GFNI) | F(VAES) | F(VPCLMULQDQ) |
^
>> arch/x86/kvm/cpuid.c:68:18: error: 'X86_FEATURE_AVX512_VNNI'
>> undeclared (first use in this function)
#define F(x) bit(X86_FEATURE_##x)
^
arch/x86/kvm/cpuid.c:392:3: note: in expansion of macro 'F'
F(AVX512_VNNI) | F(AVX512_BITALG) | F(AVX512_VPOPCNTDQ);
^
>> arch/x86/kvm/cpuid.c:68:18: error: 'X86_FEATURE_AVX512_BITALG'
>> undeclared (first use in this function)
#define F(x) bit(X86_FEATURE_##x)
^
arch/x86/kvm/cpuid.c:392:20: note: in expansion of macro 'F'
F(AVX512_VNNI) | F(AVX512_BITALG) | F(AVX512_VPOPCNTDQ);
^
vim +/X86_FEATURE_AVX512_VBMI2 +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@xxxxxxxxxx>
:::::: CC: Paolo Bonzini <pbonzini@xxxxxxxxxx>
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