Re: [PATCH v2 12/45] powerpc/ptdump: Properly handle non standard page size

From: kbuild test robot
Date: Thu May 07 2020 - 12:31:50 EST


Hi Christophe,

I love your patch! Yet something to improve:

[auto build test ERROR on v5.7-rc4]
[cannot apply to powerpc/next next-20200507]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url: https://github.com/0day-ci/linux/commits/Christophe-Leroy/Use-hugepages-to-map-kernel-mem-on-8xx/20200507-060838
base: 0e698dfa282211e414076f9dc7e83c1c288314fd
config: powerpc-randconfig-r013-20200507 (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 9.3.0
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
COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=powerpc

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

arch/powerpc/mm/ptdump/ptdump.c: In function 'walk_pmd':
>> arch/powerpc/mm/ptdump/ptdump.c:285:42: error: 'PTE_SHIFT' undeclared (first use in this function); did you mean 'PUD_SHIFT'?
285 | note_page(st, addr, 3, pmd_val(*pmd), PTE_SHIFT);
| ^~~~~~~~~
| PUD_SHIFT
arch/powerpc/mm/ptdump/ptdump.c:285:42: note: each undeclared identifier is reported only once for each function it appears in

vim +285 arch/powerpc/mm/ptdump/ptdump.c

272
273 static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start)
274 {
275 pmd_t *pmd = pmd_offset(pud, 0);
276 unsigned long addr;
277 unsigned int i;
278
279 for (i = 0; i < PTRS_PER_PMD; i++, pmd++) {
280 addr = start + i * PMD_SIZE;
281 if (!pmd_none(*pmd) && !pmd_is_leaf(*pmd))
282 /* pmd exists */
283 walk_pte(st, pmd, addr);
284 else
> 285 note_page(st, addr, 3, pmd_val(*pmd), PTE_SHIFT);
286 }
287 }
288

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

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