Hi YueHaibing,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on next-20181224]

url: https://github.com/0day-ci/linux/commits/YueHaibing/ASoC-Intel-remove-set-bu... config: x86_64-allmodconfig (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64

All warnings (new ones prefixed by >>):

arch/x86/kvm/vmx/nested.c:58:6: warning: symbol 'init_vmcs_shadow_fields' was not declared. Should it be static? arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (110011 becomes 11) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100790 becomes 790) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100790 becomes 790) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (a000a becomes a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100490 becomes 490) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100310 becomes 310) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80a08 becomes a08) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80688 becomes 688) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80608 becomes 608) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80108 becomes 108) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80388 becomes 388) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100390 becomes 390) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80208 becomes 208) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80288 becomes 288) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (a000a becomes a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100010 becomes 10) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80488 becomes 488) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100710 becomes 710) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100090 becomes 90) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (20402 becomes 402) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80508 becomes 508) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80b88 becomes b88) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100790 becomes 790) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100490 becomes 490) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100310 becomes 310) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (20482 becomes 482) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100590 becomes 590) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100610 becomes 610) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100690 becomes 690) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120912 becomes 912) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100590 becomes 590) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (20002 becomes 2) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (20082 becomes 82) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (20102 becomes 102) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (20182 becomes 182) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (20202 becomes 202) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (20282 becomes 282) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (20302 becomes 302) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (20382 becomes 382) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120012 becomes 12) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120092 becomes 92) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120112 becomes 112) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120192 becomes 192) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120212 becomes 212) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120292 becomes 292) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120312 becomes 312) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120392 becomes 392) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120412 becomes 412) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120492 becomes 492) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120512 becomes 512) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120692 becomes 692) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120712 becomes 712) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120792 becomes 792) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120812 becomes 812) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120892 becomes 892) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1a019a becomes 19a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1a021a becomes 21a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1a029a becomes 29a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1a031a becomes 31a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1a039a becomes 39a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1a041a becomes 41a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1a049a becomes 49a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1a051a becomes 51a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1a059a becomes 59a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1a061a becomes 61a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120a92 becomes a92) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1a089a becomes 89a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1a091a becomes 91a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1a099a becomes 99a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (a028a becomes 28a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (a030a becomes 30a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (a038a becomes 38a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (a040a becomes 40a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80b08 becomes b08) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100190 becomes 190) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100210 becomes 210) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80708 becomes 708) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80788 becomes 788) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80808 becomes 808) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80888 becomes 888) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100410 becomes 410) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100510 becomes 510) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120592 becomes 592) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (120612 becomes 612) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (a008a becomes 8a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (a008a becomes 8a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (180018 becomes 18) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (a010a becomes 10a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (a010a becomes 10a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80408 becomes 408) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (80c88 becomes c88) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (180118 becomes 118) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (180198 becomes 198) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100410 becomes 410) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (100510 becomes 510) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1a081a becomes 81a) arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1b009b becomes 9b)

...

arch/x86/kvm/vmx/evmcs.h:80:30: warning: cast truncates bits from constant value (1b011b becomes 11b)

arch/x86/kvm/vmx/evmcs.h:80:30: warning: too many warnings

vim +80 arch/x86/kvm/vmx/evmcs.h

75edce8a arch/x86/kvm/vmx/evmcs.h Sean Christopherson 2018-12-03 76 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 77 static __always_inline int get_evmcs_offset(unsigned long field, 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 78 u16 *clean_field) 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 79 { 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 @80 unsigned int index = ROL16(field, 6); 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 81 const struct evmcs_field *evmcs_field; 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 82 75edce8a arch/x86/kvm/vmx/evmcs.h Sean Christopherson 2018-12-03 83 if (unlikely(index >= nr_evmcs_1_fields)) { 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 84 WARN_ONCE(1, "KVM: accessing unsupported EVMCS field %lx\n", 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 85 field); 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 86 return -ENOENT; 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 87 } 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 88 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 89 evmcs_field = &vmcs_field_to_evmcs_1[index]; 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 90 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 91 if (clean_field) 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 92 *clean_field = evmcs_field->clean_field; 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 93 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 94 return evmcs_field->offset; 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 95 } 773e8a04 arch/x86/kvm/vmx_evmcs.h Vitaly Kuznetsov 2018-03-20 96

:::::: The code at line 80 was first introduced by commit :::::: 773e8a0425c923bc02668a2d6534a5ef5a43cc69 x86/kvm: use Enlightened VMCS when running on Hyper-V

:::::: TO: Vitaly Kuznetsov vkuznets@redhat.com :::::: CC: Radim Krčmář rkrcmar@redhat.com

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