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

[Christophe Leroy]

This one is already fixed in v2 and v3 by the addition of asm/pgtable.h

Christophe

Le 12/12/2018 à 06:36, kbuild test robot a écrit :
> 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 at de.ibm.com>
> :::::: CC: Martin Schwidefsky <schwidefsky at de.ibm.com>
> 
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