Re: [PATCH 1/4] hugetlb: Pass vma into huge_pte_alloc() and huge_pmd_share()

From: kernel test robot
Date: Wed Feb 17 2021 - 16:10:39 EST

Hi Peter,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on linux/master linus/master hnaz-linux-mm/master v5.11 next-20210217]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/0day-ci/linux/commits/Peter-Xu/hugetlb-Disable-huge-pmd-unshare-for-uffd-wp/20210218-003520
base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
config: sparc-allyesconfig (attached as .config)
compiler: sparc64-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/58ca9ac367f24752915f352fa9ae1ae027a29de3
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Peter-Xu/hugetlb-Disable-huge-pmd-unshare-for-uffd-wp/20210218-003520
git checkout 58ca9ac367f24752915f352fa9ae1ae027a29de3
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sparc

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

All errors (new ones prefixed by >>):

>> arch/sparc/mm/hugetlbpage.c:285:1: error: expected ';', ',' or ')' before '{' token
285 | {
| ^
>> arch/sparc/mm/hugetlbpage.c:269:22: error: 'huge_tte_to_size' defined but not used [-Werror=unused-function]
269 | static unsigned long huge_tte_to_size(pte_t pte)
| ^~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors


vim +285 arch/sparc/mm/hugetlbpage.c

c7d9f77d33a779 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-02-01 268
c7d9f77d33a779 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-02-01 @269 static unsigned long huge_tte_to_size(pte_t pte)
c7d9f77d33a779 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-02-01 270 {
c7d9f77d33a779 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-02-01 271 unsigned long size = 1UL << huge_tte_to_shift(pte);
c7d9f77d33a779 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-02-01 272
c7d9f77d33a779 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-02-01 273 if (size == REAL_HPAGE_SIZE)
c7d9f77d33a779 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-02-01 274 size = HPAGE_SIZE;
c7d9f77d33a779 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-02-01 275 return size;
c7d9f77d33a779 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-02-01 276 }
c7d9f77d33a779 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-02-01 277
e6e4f42eb773c1 arch/sparc/mm/hugetlbpage.c Peter Zijlstra 2020-11-13 278 unsigned long pud_leaf_size(pud_t pud) { return 1UL << tte_to_shift(*(pte_t *)&pud); }
e6e4f42eb773c1 arch/sparc/mm/hugetlbpage.c Peter Zijlstra 2020-11-13 279 unsigned long pmd_leaf_size(pmd_t pmd) { return 1UL << tte_to_shift(*(pte_t *)&pmd); }
e6e4f42eb773c1 arch/sparc/mm/hugetlbpage.c Peter Zijlstra 2020-11-13 280 unsigned long pte_leaf_size(pte_t pte) { return 1UL << tte_to_shift(pte); }
e6e4f42eb773c1 arch/sparc/mm/hugetlbpage.c Peter Zijlstra 2020-11-13 281
a5516438959d90 arch/sparc64/mm/hugetlbpage.c Andi Kleen 2008-07-23 282 pte_t *huge_pte_alloc(struct mm_struct *mm,
58ca9ac367f247 arch/sparc/mm/hugetlbpage.c Peter Xu 2021-02-17 283 pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
a5516438959d90 arch/sparc64/mm/hugetlbpage.c Andi Kleen 2008-07-23 284 unsigned long addr, unsigned long sz)
^1da177e4c3f41 arch/sparc64/mm/hugetlbpage.c Linus Torvalds 2005-04-16 @285 {
^1da177e4c3f41 arch/sparc64/mm/hugetlbpage.c Linus Torvalds 2005-04-16 286 pgd_t *pgd;
5637bc50483404 arch/sparc/mm/hugetlbpage.c Mike Rapoport 2019-11-24 287 p4d_t *p4d;
^1da177e4c3f41 arch/sparc64/mm/hugetlbpage.c Linus Torvalds 2005-04-16 288 pud_t *pud;
dcd1912d21a025 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-02-06 289 pmd_t *pmd;
^1da177e4c3f41 arch/sparc64/mm/hugetlbpage.c Linus Torvalds 2005-04-16 290
^1da177e4c3f41 arch/sparc64/mm/hugetlbpage.c Linus Torvalds 2005-04-16 291 pgd = pgd_offset(mm, addr);
5637bc50483404 arch/sparc/mm/hugetlbpage.c Mike Rapoport 2019-11-24 292 p4d = p4d_offset(pgd, addr);
5637bc50483404 arch/sparc/mm/hugetlbpage.c Mike Rapoport 2019-11-24 293 pud = pud_alloc(mm, p4d, addr);
df7b2155bbe755 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-08-11 294 if (!pud)
df7b2155bbe755 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-08-11 295 return NULL;
df7b2155bbe755 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-08-11 296 if (sz >= PUD_SIZE)
4dbe87d5a70215 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-08-11 297 return (pte_t *)pud;
dcd1912d21a025 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-02-06 298 pmd = pmd_alloc(mm, pud, addr);
dcd1912d21a025 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-02-06 299 if (!pmd)
dcd1912d21a025 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-02-06 300 return NULL;
59f1183dd368f1 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-03-03 301 if (sz >= PMD_SIZE)
4dbe87d5a70215 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-08-11 302 return (pte_t *)pmd;
4dbe87d5a70215 arch/sparc/mm/hugetlbpage.c Nitin Gupta 2017-08-11 303 return pte_alloc_map(mm, pmd, addr);
^1da177e4c3f41 arch/sparc64/mm/hugetlbpage.c Linus Torvalds 2005-04-16 304 }
^1da177e4c3f41 arch/sparc64/mm/hugetlbpage.c Linus Torvalds 2005-04-16 305

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