[PATCH v3] powerpc/xmon: Support dumping software pagetables
kbuild test robot
lkp at intel.com
Thu Oct 12 19:57:56 AEDT 2017
Hi Balbir,
[auto build test ERROR on powerpc/next]
[also build test ERROR on v4.14-rc4 next-20171009]
[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/Michael-Ellerman/powerpc-xmon-Support-dumping-software-pagetables/20171012-124024
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc-ppc64e_defconfig (attached as .config)
compiler: powerpc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
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
make.cross ARCH=powerpc
All error/warnings (new ones prefixed by >>):
In file included from arch/powerpc/include/asm/nohash/pgtable.h:5:0,
from arch/powerpc/include/asm/pgtable.h:18,
from include/linux/memremap.h:7,
from include/linux/mm.h:26,
from arch/powerpc/xmon/xmon.c:18:
arch/powerpc/xmon/xmon.c: In function 'show_pte':
>> arch/powerpc/include/asm/nohash/64/pgtable.h:158:40: error: right shift count >= width of type [-Werror=shift-count-overflow]
#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & (PTRS_PER_PGD - 1))
^
>> arch/powerpc/include/asm/nohash/64/pgtable.h:160:47: note: in expansion of macro 'pgd_index'
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
^~~~~~~~~
>> arch/powerpc/include/asm/nohash/64/pgtable.h:173:31: note: in expansion of macro 'pgd_offset'
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
^~~~~~~~~~
>> arch/powerpc/xmon/xmon.c:2992:11: note: in expansion of macro 'pgd_offset_k'
pgdir = pgd_offset_k(0);
^~~~~~~~~~~~
>> arch/powerpc/include/asm/nohash/64/pgtable.h:158:40: error: right shift count >= width of type [-Werror=shift-count-overflow]
#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & (PTRS_PER_PGD - 1))
^
>> arch/powerpc/include/asm/nohash/64/pgtable.h:160:47: note: in expansion of macro 'pgd_index'
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
^~~~~~~~~
>> arch/powerpc/xmon/xmon.c:2995:11: note: in expansion of macro 'pgd_offset'
pgdir = pgd_offset(mm, 0);
^~~~~~~~~~
cc1: all warnings being treated as errors
vim +/pgd_offset +173 arch/powerpc/include/asm/nohash/64/pgtable.h
f281b5d5 arch/powerpc/include/asm/pgtable-ppc64.h Aneesh Kumar K.V 2015-12-01 153
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 154 /*
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 155 * Find an entry in a page-table-directory. We combine the address region
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 156 * (the high order N bits) and the pgd portion of the address.
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 157 */
0e5f35d0 arch/powerpc/include/asm/pgtable-ppc64.h Aneesh Kumar K.V 2013-04-28 @158 #define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & (PTRS_PER_PGD - 1))
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 159
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 @160 #define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 161
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 162 #define pmd_offset(pudp,addr) \
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 163 (((pmd_t *) pud_page_vaddr(*(pudp))) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)))
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 164
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 165 #define pte_offset_kernel(dir,addr) \
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 166 (((pte_t *) pmd_page_vaddr(*(dir))) + (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 167
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 168 #define pte_offset_map(dir,addr) pte_offset_kernel((dir), (addr))
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 169 #define pte_unmap(pte) do { } while(0)
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 170
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 171 /* to find an entry in a kernel page-table-directory */
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 172 /* This now only contains the vmalloc pages */
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 @173 #define pgd_offset_k(address) pgd_offset(&init_mm, address)
78f1dbde arch/powerpc/include/asm/pgtable-ppc64.h Aneesh Kumar K.V 2012-09-10 174 extern void hpte_need_flush(struct mm_struct *mm, unsigned long addr,
78f1dbde arch/powerpc/include/asm/pgtable-ppc64.h Aneesh Kumar K.V 2012-09-10 175 pte_t *ptep, unsigned long pte, int huge);
f88df14b include/asm-powerpc/pgtable-ppc64.h David Gibson 2007-04-30 176
:::::: The code at line 173 was first introduced by commit
:::::: f88df14b1f15cdeffa060580a40c1ce3e13bb79e [POWERPC] Remove arch/powerpc's dependence on asm-ppc/pg{alloc,table}.h
:::::: TO: David Gibson <david at gibson.dropbear.id.au>
:::::: CC: Paul Mackerras <paulus at samba.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
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