[powerpc:next-test 70/71] include/asm-generic/memory_model.h:55:54: error: 'vmemmap' undeclared; did you mean 'mem_map'?

[kbuild test robot <lkp@intel.com>]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next-test
head:   13fd174be1903cc069bb73b0d53a0420b8f6d778
commit: 3a0f466ce2402cc090c97ccc1285508f688d8a8e [70/71] powerpc: Implement CONFIG_DEBUG_VIRTUAL
config: powerpc-ppc64e_defconfig (attached as .config)
compiler: powerpc64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 3a0f466ce2402cc090c97ccc1285508f688d8a8e
        # save the attached .config to linux build tree
        GCC_VERSION=7.2.0 make.cross ARCH=powerpc 

All errors (new ones prefixed by >>):

   In file included from arch/powerpc/include/asm/page.h:339:0,
                    from arch/powerpc/include/asm/thread_info.h:29,
                    from include/linux/thread_info.h:38,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/powerpc/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:81,
                    from include/linux/spinlock.h:51,
                    from include/linux/seqlock.h:36,
                    from include/linux/time.h:6,
                    from include/linux/stat.h:19,
                    from include/linux/module.h:10,
                    from init/do_mounts.c:1:
   arch/powerpc/include/asm/io.h: In function 'page_to_phys':
>> include/asm-generic/memory_model.h:55:54: error: 'vmemmap' undeclared (first use in this function); did you mean 'mem_map'?
    #define __page_to_pfn(page) (unsigned long)((page) - vmemmap)
                                                         ^
   include/asm-generic/memory_model.h:81:21: note: in expansion of macro '__page_to_pfn'
    #define page_to_pfn __page_to_pfn
                        ^~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:835:22: note: in expansion of macro 'page_to_pfn'
     unsigned long pfn = page_to_pfn(page);
                         ^~~~~~~~~~~
   include/asm-generic/memory_model.h:55:54: note: each undeclared identifier is reported only once for each function it appears in
    #define __page_to_pfn(page) (unsigned long)((page) - vmemmap)
                                                         ^
   include/asm-generic/memory_model.h:81:21: note: in expansion of macro '__page_to_pfn'
    #define page_to_pfn __page_to_pfn
                        ^~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:835:22: note: in expansion of macro 'page_to_pfn'
     unsigned long pfn = page_to_pfn(page);
                         ^~~~~~~~~~~

vim +55 include/asm-generic/memory_model.h

8f6aac41 Christoph Lameter  2007-10-16  52  
af901ca1 André Goddard Rosa 2009-11-14  53  /* memmap is virtually contiguous.  */
8f6aac41 Christoph Lameter  2007-10-16  54  #define __pfn_to_page(pfn)	(vmemmap + (pfn))
32272a26 Martin Schwidefsky 2008-12-25 @55  #define __page_to_pfn(page)	(unsigned long)((page) - vmemmap)
8f6aac41 Christoph Lameter  2007-10-16  56  

:::::: The code at line 55 was first introduced by commit
:::::: 32272a26974d2027384fd4010cd1780fca425d94 [S390] __page_to_pfn warnings

:::::: TO: Martin Schwidefsky <schwidefsky@de.ibm.com>
:::::: CC: Martin Schwidefsky <schwidefsky@de.ibm.com>

---
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