linux-kernel - Re: [PATCH v4 11/17] x86/clearcpuid: Clear CPUID bit in CPUID faulting

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Message-ID: <201903050646.A4PuTzsJ%fengguang.wu@intel.com>
Date:   Tue, 5 Mar 2019 06:04:34 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Fenghua Yu <fenghua.yu@...el.com>
Cc:     kbuild-all@...org, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        H Peter Anvin <hpa@...or.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Ashok Raj <ashok.raj@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ravi V Shankar <ravi.v.shankar@...el.com>,
        Xiaoyao Li <xiaoyao.li@...el.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        x86 <x86@...nel.org>, kvm@...r.kernel.org,
        Fenghua Yu <fenghua.yu@...el.com>
Subject: Re: [PATCH v4 11/17] x86/clearcpuid: Clear CPUID bit in CPUID
 faulting

Hi Peter,

I love your patch! Perhaps something to improve:

[auto build test WARNING on kvm/linux-next]
[also build test WARNING on v5.0 next-20190304]
[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/Fenghua-Yu/x86-split_lock-Enable-AC-exception-for-split-locked-accesses/20190305-044643
base:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
config: x86_64-randconfig-x017-201909 (attached as .config)
compiler: gcc-8 (Debian 8.2.0-21) 8.2.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   In file included from arch/x86/kernel/cpu/intel.c:22:
>> arch/x86/include/asm/insn-eval.h:18:39: warning: 'struct insn' declared inside parameter list will not be visible outside of this definition or declaration
    void __user *insn_get_addr_ref(struct insn *insn, struct pt_regs *regs);
                                          ^~~~
   arch/x86/include/asm/insn-eval.h:19:34: warning: 'struct insn' declared inside parameter list will not be visible outside of this definition or declaration
    int insn_get_modrm_rm_off(struct insn *insn, struct pt_regs *regs);
                                     ^~~~

vim +18 arch/x86/include/asm/insn-eval.h

4efea85f Ricardo Neri    2017-10-27  17  
32542ee2 Ricardo Neri    2017-10-27 @18  void __user *insn_get_addr_ref(struct insn *insn, struct pt_regs *regs);
e5e45f11 Ricardo Neri    2017-10-27  19  int insn_get_modrm_rm_off(struct insn *insn, struct pt_regs *regs);
bd5a410a Ricardo Neri    2017-10-27  20  unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx);
e2a5dca7 Borislav Petkov 2017-11-23  21  int insn_get_code_seg_params(struct pt_regs *regs);
32542ee2 Ricardo Neri    2017-10-27  22  

:::::: The code at line 18 was first introduced by commit
:::::: 32542ee295bec38e5e1608f8c9d6d28e5a7e6112 x86/mpx, x86/insn: Relocate insn util functions to a new insn-eval file

:::::: TO: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
:::::: CC: Thomas Gleixner <tglx@...utronix.de>

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