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Re: arch/x86/xen/suspend.c:70:9: error: implicit declaration of function 'xen_pv_domain'

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On 12/22/2015 06:49 AM, Stefano Stabellini wrote:
> On Mon, 21 Dec 2015, Andrew Morton wrote:
>> On Mon, 21 Dec 2015 00:43:17 +0800 kbuild test robot <fengguang.wu@intel.com> wrote:
>>
>>> First bad commit (maybe != root cause):
>>>
>>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>>> head:   69c37a92ddbf79d9672230f21a04580d7ac2f4c3
>>> commit: 71458cfc782eafe4b27656e078d379a34e472adf kernel: add support for gcc 5
>>> date:   1 year, 2 months ago
>>> config: x86_64-randconfig-x006-201551 (attached as .config)
>>> reproduce:
>>>          git checkout 71458cfc782eafe4b27656e078d379a34e472adf
>>>          # save the attached .config to linux build tree
>>>          make ARCH=x86_64
>>>
>>> All errors (new ones prefixed by >>):
>>>
>>>     arch/x86/xen/suspend.c: In function 'xen_arch_pre_suspend':
>>>>> arch/x86/xen/suspend.c:70:9: error: implicit declaration of function 'xen_pv_domain' [-Werror=implicit-function-declaration]
>>>          if (xen_pv_domain())
>>>              ^
>> hm, tricky!
>>
>> --- a/arch/x86/xen/suspend.c~arch-x86-xen-suspendc-include-xen-xenh
>> +++ a/arch/x86/xen/suspend.c
>> @@ -1,6 +1,7 @@
>>   #include <linux/types.h>
>>   #include <linux/tick.h>
>>   
>> +#include <xen/xen.h>
>>   #include <xen/interface/xen.h>
>>   #include <xen/grant_table.h>
>>   #include <xen/events.h>
>
> Looks like the right fix. David? Boris?

Why are we trying to compile this if CONFIG_XEN is not set?

-boris
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arch/x86/xen/suspend.c:70:9: error: implicit declaration of function  'xen_pv_domain' kbuild test robot <fengguang.wu@intel.com> - 2015-12-20 17:50 +0100
  Re: arch/x86/xen/suspend.c:70:9: error: implicit declaration of  function 'xen_pv_domain' Andrew Morton <akpm@linux-foundation.org> - 2015-12-21 23:10 +0100
    Re: arch/x86/xen/suspend.c:70:9: error: implicit declaration of  function 'xen_pv_domain' Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2015-12-22 13:00 +0100
      Re: arch/x86/xen/suspend.c:70:9: error: implicit declaration of  function 'xen_pv_domain' Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2015-12-22 15:40 +0100

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