Re: [Xen-devel] [PATCH v2] x86/xen: Combine PV features to be disabled in xen_nopv

[kbuild test robot <lkp@xxxxxxxxx>]

Hi Konrad,

I love your patch! Yet something to improve:

[auto build test ERROR on xen-tip/linux-next]
[also build test ERROR on v4.17-rc7 next-20180529]
[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/Joao-Martins/x86-xen-Combine-PV-features-to-be-disabled-in-xen_nopv/20180530-031040
base:   https://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git linux-next
config: x86_64-randconfig-s4-05301434 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   arch/x86/xen/smp.o: In function `xen_smp_intr_init':
>> arch/x86/xen/smp.c:76: undefined reference to `xen_nopv_ipi'
   arch/x86/xen/spinlock.o: In function `xen_init_lock_cpu':
>> arch/x86/xen/spinlock.c:82: undefined reference to `xen_nopv_spin'
   arch/x86/xen/spinlock.o: In function `xen_uninit_lock_cpu':
   arch/x86/xen/spinlock.c:110: undefined reference to `xen_nopv_spin'
   arch/x86/xen/spinlock.o: In function `xen_parse_nopvspin':
>> arch/x86/xen/spinlock.c:148: undefined reference to `xen_set_nopv'
   arch/x86/xen/spinlock.o: In function `xen_init_spinlocks':
   arch/x86/xen/spinlock.c:132: undefined reference to `xen_nopv_spin'

vim +76 arch/x86/xen/smp.c

    61  
    62  int xen_smp_intr_init(unsigned int cpu)
    63  {
    64          int rc;
    65          char *resched_name, *callfunc_name, *debug_name;
    66  
    67          debug_name = kasprintf(GFP_KERNEL, "debug%d", cpu);
    68          rc = bind_virq_to_irqhandler(VIRQ_DEBUG, cpu, 
xen_debug_interrupt,
    69                                       IRQF_PERCPU | IRQF_NOBALANCING,
    70                                       debug_name, NULL);
    71          if (rc < 0)
    72                  goto fail;
    73          per_cpu(xen_debug_irq, cpu).irq = rc;
    74          per_cpu(xen_debug_irq, cpu).name = debug_name;
    75  
  > 76          if (xen_hvm_domain() && xen_nopv_ipi())
    77                  return 0;
    78  
    79          resched_name = kasprintf(GFP_KERNEL, "resched%d", cpu);
    80          rc = bind_ipi_to_irqhandler(XEN_RESCHEDULE_VECTOR,
    81                                      cpu,
    82                                      xen_reschedule_interrupt,
    83                                      IRQF_PERCPU|IRQF_NOBALANCING,
    84                                      resched_name,
    85                                      NULL);
    86          if (rc < 0)
    87                  goto fail;
    88          per_cpu(xen_resched_irq, cpu).irq = rc;
    89          per_cpu(xen_resched_irq, cpu).name = resched_name;
    90  
    91          callfunc_name = kasprintf(GFP_KERNEL, "callfunc%d", cpu);
    92          rc = bind_ipi_to_irqhandler(XEN_CALL_FUNCTION_VECTOR,
    93                                      cpu,
    94                                      xen_call_function_interrupt,
    95                                      IRQF_PERCPU|IRQF_NOBALANCING,
    96                                      callfunc_name,
    97                                      NULL);
    98          if (rc < 0)
    99                  goto fail;
   100          per_cpu(xen_callfunc_irq, cpu).irq = rc;
   101          per_cpu(xen_callfunc_irq, cpu).name = callfunc_name;
   102  
   103          callfunc_name = kasprintf(GFP_KERNEL, "callfuncsingle%d", cpu);
   104          rc = bind_ipi_to_irqhandler(XEN_CALL_FUNCTION_SINGLE_VECTOR,
   105                                      cpu,
   106                                      xen_call_function_single_interrupt,
   107                                      IRQF_PERCPU|IRQF_NOBALANCING,
   108                                      callfunc_name,
   109                                      NULL);
   110          if (rc < 0)
   111                  goto fail;
   112          per_cpu(xen_callfuncsingle_irq, cpu).irq = rc;
   113          per_cpu(xen_callfuncsingle_irq, cpu).name = callfunc_name;
   114  
   115          return 0;
   116  
   117   fail:
   118          xen_smp_intr_free(cpu);
   119          return rc;
   120  }
   121  

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

Attachment: .config.gz
Description: application/gzip

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