linux-kernel - Re: [PATCH v2 1/4] KVM: X86: Add arrays to save/restore LBR MSRs

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Message-ID: <201510232015.XQZkjmJO%fengguang.wu@intel.com>
Date:	Fri, 23 Oct 2015 20:14:51 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Jian Zhou <jianjay.zhou@...wei.com>
Cc:	kbuild-all@...org, kvm@...r.kernel.org, pbonzini@...hat.com,
	gleb@...nel.org, tglx@...utronix.de, mingo@...hat.com,
	hpa@...or.com, x86@...nel.org, linux-kernel@...r.kernel.org,
	herongguang.he@...wei.com, zhang.zhanghailiang@...wei.com,
	weidong.huang@...wei.com, peter.huangpeng@...wei.com,
	Jian Zhou <jianjay.zhou@...wei.com>
Subject: Re: [PATCH v2 1/4] KVM: X86: Add arrays to save/restore LBR MSRs

Hi Jian,

[auto build test ERROR on v4.3-rc6 -- if it's inappropriate base, please suggest rules for selecting the more suitable base]

url:    https://github.com/0day-ci/linux/commits/Jian-Zhou/KVM-X86-Add-arrays-to-save-restore-LBR-MSRs/20151023-172601
config: x86_64-lkp (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

Note: the linux-review/Jian-Zhou/KVM-X86-Add-arrays-to-save-restore-LBR-MSRs/20151023-172601 HEAD d402c03a709c1dff60e2800becbafaf3b2d86dcd builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   In file included from include/linux/kvm_host.h:34:0,
                    from arch/x86/kvm/../../../virt/kvm/kvm_main.c:21:
>> arch/x86/include/asm/kvm_host.h:530:25: error: 'MAX_NUM_LBR_MSRS' undeclared here (not in a function)
      struct msr_data guest[MAX_NUM_LBR_MSRS];
                            ^

vim +/MAX_NUM_LBR_MSRS +530 arch/x86/include/asm/kvm_host.h

   524	
   525		int lbr_status;
   526		int lbr_used;
   527	
   528		struct lbr_msr {
   529			unsigned nr;
 > 530			struct msr_data guest[MAX_NUM_LBR_MSRS];
   531			struct msr_data host[MAX_NUM_LBR_MSRS];
   532		}lbr_msr;
   533	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Download attachment ".config.gz" of type "application/octet-stream" (21911 bytes)