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SubjectRe: [PATCH v5 1/4] ioremap: Update pgtable free interfaces with addr
Hi Chintan,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v4.16-rc7]
[also build test ERROR on next-20180328]
[cannot apply to arm64/for-next/core tip/x86/core asm-generic/master]
[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/Chintan-Pandya/Fix-issues-with-huge-mapping-in-ioremap-for-ARM64/20180328-192254
config: i386-randconfig-x014-201812 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386

All errors (new ones prefixed by >>):

arch/x86/mm/pgtable.c: In function 'pud_free_pmd_page':
>> arch/x86/mm/pgtable.c:725:8: error: too few arguments to function 'pmd_free_pte_page'
if (!pmd_free_pte_page(&pmd[i]))
^~~~~~~~~~~~~~~~~
In file included from arch/x86/include/asm/pgtable.h:1292:0,
from include/linux/memremap.h:8,
from include/linux/mm.h:27,
from arch/x86/mm/pgtable.c:2:
include/asm-generic/pgtable.h:987:5: note: declared here
int pmd_free_pte_page(pmd_t *pmd, unsigned long addr);
^~~~~~~~~~~~~~~~~

vim +/pmd_free_pte_page +725 arch/x86/mm/pgtable.c

b6bdb751 Toshi Kani 2018-03-22 705
b6bdb751 Toshi Kani 2018-03-22 706 /**
b6bdb751 Toshi Kani 2018-03-22 707 * pud_free_pmd_page - Clear pud entry and free pmd page.
b6bdb751 Toshi Kani 2018-03-22 708 * @pud: Pointer to a PUD.
5b7ee34c Chintan Pandya 2018-03-27 709 * @addr: Virtual address associated with pud.
b6bdb751 Toshi Kani 2018-03-22 710 *
b6bdb751 Toshi Kani 2018-03-22 711 * Context: The pud range has been unmaped and TLB purged.
b6bdb751 Toshi Kani 2018-03-22 712 * Return: 1 if clearing the entry succeeded. 0 otherwise.
b6bdb751 Toshi Kani 2018-03-22 713 */
5b7ee34c Chintan Pandya 2018-03-27 714 int pud_free_pmd_page(pud_t *pud, unsigned long addr)
b6bdb751 Toshi Kani 2018-03-22 715 {
28ee90fe Toshi Kani 2018-03-22 716 pmd_t *pmd;
28ee90fe Toshi Kani 2018-03-22 717 int i;
28ee90fe Toshi Kani 2018-03-22 718
28ee90fe Toshi Kani 2018-03-22 719 if (pud_none(*pud))
28ee90fe Toshi Kani 2018-03-22 720 return 1;
28ee90fe Toshi Kani 2018-03-22 721
28ee90fe Toshi Kani 2018-03-22 722 pmd = (pmd_t *)pud_page_vaddr(*pud);
28ee90fe Toshi Kani 2018-03-22 723
28ee90fe Toshi Kani 2018-03-22 724 for (i = 0; i < PTRS_PER_PMD; i++)
28ee90fe Toshi Kani 2018-03-22 @725 if (!pmd_free_pte_page(&pmd[i]))
28ee90fe Toshi Kani 2018-03-22 726 return 0;
28ee90fe Toshi Kani 2018-03-22 727
28ee90fe Toshi Kani 2018-03-22 728 pud_clear(pud);
28ee90fe Toshi Kani 2018-03-22 729 free_page((unsigned long)pmd);
28ee90fe Toshi Kani 2018-03-22 730
28ee90fe Toshi Kani 2018-03-22 731 return 1;
b6bdb751 Toshi Kani 2018-03-22 732 }
b6bdb751 Toshi Kani 2018-03-22 733

:::::: The code at line 725 was first introduced by commit
:::::: 28ee90fe6048fa7b7ceaeb8831c0e4e454a4cf89 x86/mm: implement free pmd/pte page interfaces

:::::: TO: Toshi Kani <toshi.kani@hpe.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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