Re: [PATCH v7 06/11] powerpc/32: make KVIRT_TOP dependant on FIXMAP_START

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Hi Christophe,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on powerpc/next]
[also build test ERROR on v5.0-rc8]
[cannot apply to next-20190225]
[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/Christophe-Leroy/KASAN-for-powerpc-32/20190226-052610
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc-acadia_defconfig (attached as .config)
compiler: powerpc-linux-gnu-gcc (Debian 8.2.0-11) 8.2.0
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=8.2.0 make.cross ARCH=powerpc 

All errors (new ones prefixed by >>):

   In file included from arch/powerpc/include/asm/nohash/pgtable.h:8,
                    from arch/powerpc/include/asm/pgtable.h:20,
                    from include/linux/mm.h:98,
                    from include/linux/highmem.h:8,
                    from arch/powerpc/mm/dma-noncoherent.c:31:
>> arch/powerpc/include/asm/nohash/32/pgtable.h:75:19: error: 'FIXADDR_START' undeclared here (not in a function); did you mean 'XAS_RESTART'?
    #define KVIRT_TOP FIXADDR_START
                      ^~~~~~~~~~~~~
   arch/powerpc/include/asm/nohash/32/pgtable.h:84:23: note: in expansion of macro 'KVIRT_TOP'
    #define IOREMAP_TOP ((KVIRT_TOP - CONFIG_CONSISTENT_SIZE) & PAGE_MASK)
                          ^~~~~~~~~
   arch/powerpc/mm/dma-noncoherent.c:47:27: note: in expansion of macro 'IOREMAP_TOP'
    #define CONSISTENT_BASE  (IOREMAP_TOP)
                              ^~~~~~~~~~~
   arch/powerpc/mm/dma-noncoherent.c:93:14: note: in expansion of macro 'CONSISTENT_BASE'
     .vm_start = CONSISTENT_BASE,
                 ^~~~~~~~~~~~~~~

vim +75 arch/powerpc/include/asm/nohash/32/pgtable.h

    60	
    61	#define pte_ERROR(e) \
    62		pr_err("%s:%d: bad pte %llx.\n", __FILE__, __LINE__, \
    63			(unsigned long long)pte_val(e))
    64	#define pgd_ERROR(e) \
    65		pr_err("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
    66	
    67	/*
    68	 * This is the bottom of the PKMAP area with HIGHMEM or an arbitrary
    69	 * value (for now) on others, from where we can start layout kernel
    70	 * virtual space that goes below PKMAP and FIXMAP
    71	 */
    72	#ifdef CONFIG_HIGHMEM
    73	#define KVIRT_TOP	PKMAP_BASE
    74	#else
  > 75	#define KVIRT_TOP	FIXADDR_START
    76	#endif
    77	

---
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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