linux-kernel - Re: [PATCH v3 12/21] KVM: X86: Implement ring-based dirty memory tracking

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Date:   Sat, 11 Jan 2020 12:49:28 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Peter Xu <peterx@...hat.com>
Cc:     kbuild-all@...ts.01.org, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Christophe de Dinechin <dinechin@...hat.com>,
        "Michael S . Tsirkin" <mst@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Yan Zhao <yan.y.zhao@...el.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Kevin Kevin <kevin.tian@...el.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>, peterx@...hat.com,
        "Dr . David Alan Gilbert" <dgilbert@...hat.com>,
        Lei Cao <lei.cao@...atus.com>
Subject: Re: [PATCH v3 12/21] KVM: X86: Implement ring-based dirty memory
 tracking

Hi Peter,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on kvm/linux-next]
[also build test ERROR on next-20200110]
[cannot apply to kvmarm/next vfio/next v5.5-rc5]
[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/Peter-Xu/KVM-Dirty-ring-interface/20200110-152053
base:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
config: s390-alldefconfig (attached as .config)
compiler: s390-linux-gcc (GCC) 7.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.5.0 make.cross ARCH=s390 

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

All errors (new ones prefixed by >>):

   arch/s390/../../virt/kvm/kvm_main.o: In function `mark_page_dirty_in_slot':
>> kvm_main.c:(.text+0x4d6): undefined reference to `kvm_dirty_ring_get'
>> kvm_main.c:(.text+0x4f0): undefined reference to `kvm_dirty_ring_push'
   arch/s390/../../virt/kvm/kvm_main.o: In function `kvm_vcpu_init':
>> kvm_main.c:(.text+0x1fe6): undefined reference to `kvm_dirty_ring_alloc'
>> kvm_main.c:(.text+0x204c): undefined reference to `kvm_dirty_ring_free'
   arch/s390/../../virt/kvm/kvm_main.o: In function `kvm_vcpu_uninit':
   kvm_main.c:(.text+0x20c0): undefined reference to `kvm_dirty_ring_free'
   arch/s390/../../virt/kvm/kvm_main.o: In function `kvm_reset_dirty_gfn':
>> kvm_main.c:(.text+0x6650): undefined reference to `kvm_arch_mmu_enable_log_dirty_pt_masked'
   arch/s390/../../virt/kvm/kvm_main.o: In function `kvm_vm_ioctl':
>> kvm_main.c:(.text+0x6b58): undefined reference to `kvm_dirty_ring_reset'

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

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