From: kernel test robot <lkp@intel.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
Mark Brown <broonie@kernel.org>
Subject: [linux-next:master 5603/5655] arch/x86/kvm/msrs.c:654:7: error: call to undeclared function 'static_cpu_has'; ISO C99 and later do not support implicit function declarations
Date: Sat, 11 Jul 2026 20:54:29 +0800 [thread overview]
Message-ID: <202607112000.6Z3R9tRe-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: bee763d5f341b99cf472afeb508d4988f62a6ca1
commit: d9b292f64e4bc5ab3e14dc0b89a7b0cc47c11e00 [5603/5655] Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm.git
config: x86_64-randconfig-071-20260710 (https://download.01.org/0day-ci/archive/20260711/202607112000.6Z3R9tRe-lkp@intel.com/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260711/202607112000.6Z3R9tRe-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202607112000.6Z3R9tRe-lkp@intel.com/
Note: the linux-next/master HEAD bee763d5f341b99cf472afeb508d4988f62a6ca1 builds fine.
It may have been fixed somewhere.
All errors (new ones prefixed by >>):
>> arch/x86/kvm/msrs.c:654:7: error: call to undeclared function 'static_cpu_has'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
654 | if (!static_cpu_has(X86_FEATURE_XSAVES) &&
| ^
arch/x86/kvm/msrs.c:654:7: note: did you mean '__static_cpu_has'?
arch/x86/include/asm/cpufeature.h:99:29: note: '__static_cpu_has' declared here
99 | static __always_inline bool __static_cpu_has(u16 bit)
| ^
1 error generated.
vim +/static_cpu_has +654 arch/x86/kvm/msrs.c
7a268308015843 Sean Christopherson 2026-06-12 623
7a268308015843 Sean Christopherson 2026-06-12 624 static int set_efer(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
7a268308015843 Sean Christopherson 2026-06-12 625 {
7a268308015843 Sean Christopherson 2026-06-12 626 u64 old_efer = vcpu->arch.efer;
7a268308015843 Sean Christopherson 2026-06-12 627 u64 efer = msr_info->data;
7a268308015843 Sean Christopherson 2026-06-12 628 int r;
7a268308015843 Sean Christopherson 2026-06-12 629
7a268308015843 Sean Christopherson 2026-06-12 630 if (efer & efer_reserved_bits)
7a268308015843 Sean Christopherson 2026-06-12 631 return 1;
7a268308015843 Sean Christopherson 2026-06-12 632
7a268308015843 Sean Christopherson 2026-06-12 633 if (!msr_info->host_initiated) {
7a268308015843 Sean Christopherson 2026-06-12 634 if (!__kvm_valid_efer(vcpu, efer))
7a268308015843 Sean Christopherson 2026-06-12 635 return 1;
7a268308015843 Sean Christopherson 2026-06-12 636
7a268308015843 Sean Christopherson 2026-06-12 637 if (is_paging(vcpu) &&
7a268308015843 Sean Christopherson 2026-06-12 638 (vcpu->arch.efer & EFER_LME) != (efer & EFER_LME))
7a268308015843 Sean Christopherson 2026-06-12 639 return 1;
7a268308015843 Sean Christopherson 2026-06-12 640 }
7a268308015843 Sean Christopherson 2026-06-12 641
7a268308015843 Sean Christopherson 2026-06-12 642 efer &= ~EFER_LMA;
7a268308015843 Sean Christopherson 2026-06-12 643 efer |= vcpu->arch.efer & EFER_LMA;
7a268308015843 Sean Christopherson 2026-06-12 644
7a268308015843 Sean Christopherson 2026-06-12 645 r = kvm_x86_call(set_efer)(vcpu, efer);
7a268308015843 Sean Christopherson 2026-06-12 646 if (r) {
7a268308015843 Sean Christopherson 2026-06-12 647 WARN_ON(r > 0);
7a268308015843 Sean Christopherson 2026-06-12 648 return r;
7a268308015843 Sean Christopherson 2026-06-12 649 }
7a268308015843 Sean Christopherson 2026-06-12 650
7a268308015843 Sean Christopherson 2026-06-12 651 if ((efer ^ old_efer) & KVM_MMU_EFER_ROLE_BITS)
7a268308015843 Sean Christopherson 2026-06-12 652 kvm_mmu_reset_context(vcpu);
7a268308015843 Sean Christopherson 2026-06-12 653
7a268308015843 Sean Christopherson 2026-06-12 @654 if (!static_cpu_has(X86_FEATURE_XSAVES) &&
7a268308015843 Sean Christopherson 2026-06-12 655 (efer & EFER_SVME))
7a268308015843 Sean Christopherson 2026-06-12 656 kvm_hv_xsaves_xsavec_maybe_warn(vcpu);
7a268308015843 Sean Christopherson 2026-06-12 657
7a268308015843 Sean Christopherson 2026-06-12 658 return 0;
7a268308015843 Sean Christopherson 2026-06-12 659 }
7a268308015843 Sean Christopherson 2026-06-12 660
:::::: The code at line 654 was first introduced by commit
:::::: 7a268308015843c7e8b15dda588b2e9adf45223f KVM: x86: Move the bulk of MSR specific code from x86.c to msrs.{c,h}
:::::: TO: Sean Christopherson <seanjc@google.com>
:::::: CC: Paolo Bonzini <pbonzini@redhat.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-07-11 12:55 UTC|newest]
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