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SubjectRe: [PATCH v11 9/9] KVM: X86: Set CET feature bits for CPUID enumeration
Hi Yang,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on kvm/linux-next]
[also build test ERROR on next-20200326]
[cannot apply to vhost/linux-next tip/auto-latest linus/master linux/master v5.6-rc7]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url: https://github.com/0day-ci/linux/commits/Yang-Weijiang/Introduce-support-for-guest-CET-feature/20200327-040801
base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
config: x86_64-randconfig-g001-20200327 (attached as .config)
compiler: gcc-7 (Debian 7.5.0-5) 7.5.0
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

In file included from include/linux/kvm_host.h:36:0,
from arch/x86/kvm/emulate.c:21:
arch/x86/kvm/emulate.c: In function 'check_cr_write':
>> arch/x86/include/asm/kvm_host.h:99:8: error: 'X86_CR4_CET' undeclared (first use in this function); did you mean 'X86_CR4_PCE'?
| X86_CR4_CET))
^
arch/x86/kvm/emulate.c:4206:3: note: in expansion of macro 'CR4_RESERVED_BITS'
CR4_RESERVED_BITS,
^~~~~~~~~~~~~~~~~
arch/x86/include/asm/kvm_host.h:99:8: note: each undeclared identifier is reported only once for each function it appears in
| X86_CR4_CET))
^
arch/x86/kvm/emulate.c:4206:3: note: in expansion of macro 'CR4_RESERVED_BITS'
CR4_RESERVED_BITS,
^~~~~~~~~~~~~~~~~

vim +99 arch/x86/include/asm/kvm_host.h

51
52 #define KVM_DIRTY_LOG_MANUAL_CAPS (KVM_DIRTY_LOG_MANUAL_PROTECT_ENABLE | \
53 KVM_DIRTY_LOG_INITIALLY_SET)
54
55 /* x86-specific vcpu->requests bit members */
56 #define KVM_REQ_MIGRATE_TIMER KVM_ARCH_REQ(0)
57 #define KVM_REQ_REPORT_TPR_ACCESS KVM_ARCH_REQ(1)
58 #define KVM_REQ_TRIPLE_FAULT KVM_ARCH_REQ(2)
59 #define KVM_REQ_MMU_SYNC KVM_ARCH_REQ(3)
60 #define KVM_REQ_CLOCK_UPDATE KVM_ARCH_REQ(4)
61 #define KVM_REQ_LOAD_MMU_PGD KVM_ARCH_REQ(5)
62 #define KVM_REQ_EVENT KVM_ARCH_REQ(6)
63 #define KVM_REQ_APF_HALT KVM_ARCH_REQ(7)
64 #define KVM_REQ_STEAL_UPDATE KVM_ARCH_REQ(8)
65 #define KVM_REQ_NMI KVM_ARCH_REQ(9)
66 #define KVM_REQ_PMU KVM_ARCH_REQ(10)
67 #define KVM_REQ_PMI KVM_ARCH_REQ(11)
68 #define KVM_REQ_SMI KVM_ARCH_REQ(12)
69 #define KVM_REQ_MASTERCLOCK_UPDATE KVM_ARCH_REQ(13)
70 #define KVM_REQ_MCLOCK_INPROGRESS \
71 KVM_ARCH_REQ_FLAGS(14, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
72 #define KVM_REQ_SCAN_IOAPIC \
73 KVM_ARCH_REQ_FLAGS(15, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
74 #define KVM_REQ_GLOBAL_CLOCK_UPDATE KVM_ARCH_REQ(16)
75 #define KVM_REQ_APIC_PAGE_RELOAD \
76 KVM_ARCH_REQ_FLAGS(17, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
77 #define KVM_REQ_HV_CRASH KVM_ARCH_REQ(18)
78 #define KVM_REQ_IOAPIC_EOI_EXIT KVM_ARCH_REQ(19)
79 #define KVM_REQ_HV_RESET KVM_ARCH_REQ(20)
80 #define KVM_REQ_HV_EXIT KVM_ARCH_REQ(21)
81 #define KVM_REQ_HV_STIMER KVM_ARCH_REQ(22)
82 #define KVM_REQ_LOAD_EOI_EXITMAP KVM_ARCH_REQ(23)
83 #define KVM_REQ_GET_VMCS12_PAGES KVM_ARCH_REQ(24)
84 #define KVM_REQ_APICV_UPDATE \
85 KVM_ARCH_REQ_FLAGS(25, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
86
87 #define CR0_RESERVED_BITS \
88 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
89 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
90 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
91
92 #define CR4_RESERVED_BITS \
93 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
94 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
95 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \
96 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_FSGSBASE \
97 | X86_CR4_OSXMMEXCPT | X86_CR4_LA57 | X86_CR4_VMXE \
98 | X86_CR4_SMAP | X86_CR4_PKE | X86_CR4_UMIP \
> 99 | X86_CR4_CET))
100

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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