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Date: Sat, 29 Jan 2022 14:52:36 +0800
From: kernel test robot <lkp@...el.com>
To: Ard Biesheuvel <ardb@...nel.org>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [ardb:arm64-ro-page-tables-pkvm-v5.17 26/26]
mm/huge_memory.c:1956:66: error: 'PMD_TYPE_TABLE' undeclared
tree: git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git arm64-ro-page-tables-pkvm-v5.17
head: b38f2df95cbf61e70bc32017da5318d1cb03e3e3
commit: b38f2df95cbf61e70bc32017da5318d1cb03e3e3 [26/26] mm: HACK provide target address when migrating a PMD entry
config: riscv-buildonly-randconfig-r006-20220127 (https://download.01.org/0day-ci/archive/20220129/202201291432.X54lXKXd-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 11.2.0
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://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/commit/?id=b38f2df95cbf61e70bc32017da5318d1cb03e3e3
git remote add ardb git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git
git fetch --no-tags ardb arm64-ro-page-tables-pkvm-v5.17
git checkout b38f2df95cbf61e70bc32017da5318d1cb03e3e3
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
In file included from arch/riscv/include/asm/pgtable.h:111,
from include/linux/pgtable.h:6,
from include/linux/mm.h:33,
from mm/huge_memory.c:8:
mm/huge_memory.c: In function '__split_huge_zero_page_pmd':
>> mm/huge_memory.c:1956:66: error: 'PMD_TYPE_TABLE' undeclared (first use in this function)
1956 | set_pmd_at(mm, haddr, pmd, __pmd(page_to_phys(pgtable) | PMD_TYPE_TABLE));
| ^~~~~~~~~~~~~~
arch/riscv/include/asm/pgtable-64.h:47:37: note: in definition of macro '__pmd'
47 | #define __pmd(x) ((pmd_t) { (x) })
| ^
mm/huge_memory.c:1956:66: note: each undeclared identifier is reported only once for each function it appears in
1956 | set_pmd_at(mm, haddr, pmd, __pmd(page_to_phys(pgtable) | PMD_TYPE_TABLE));
| ^~~~~~~~~~~~~~
arch/riscv/include/asm/pgtable-64.h:47:37: note: in definition of macro '__pmd'
47 | #define __pmd(x) ((pmd_t) { (x) })
| ^
mm/huge_memory.c: In function '__split_huge_pmd_locked':
mm/huge_memory.c:2137:66: error: 'PMD_TYPE_TABLE' undeclared (first use in this function)
2137 | set_pmd_at(mm, haddr, pmd, __pmd(page_to_phys(pgtable) | PMD_TYPE_TABLE));
| ^~~~~~~~~~~~~~
arch/riscv/include/asm/pgtable-64.h:47:37: note: in definition of macro '__pmd'
47 | #define __pmd(x) ((pmd_t) { (x) })
| ^
--
In file included from arch/riscv/include/asm/pgtable.h:111,
from include/linux/pgtable.h:6,
from include/linux/mm.h:33,
from mm/khugepaged.c:4:
mm/khugepaged.c: In function 'collapse_huge_page':
>> mm/khugepaged.c:1166:68: error: 'PMD_TYPE_TABLE' undeclared (first use in this function)
1166 | set_pmd_at(mm, address, pmd, __pmd(pmd_val(_pmd) | PMD_TYPE_TABLE));
| ^~~~~~~~~~~~~~
arch/riscv/include/asm/pgtable-64.h:47:37: note: in definition of macro '__pmd'
47 | #define __pmd(x) ((pmd_t) { (x) })
| ^
mm/khugepaged.c:1166:68: note: each undeclared identifier is reported only once for each function it appears in
1166 | set_pmd_at(mm, address, pmd, __pmd(pmd_val(_pmd) | PMD_TYPE_TABLE));
| ^~~~~~~~~~~~~~
arch/riscv/include/asm/pgtable-64.h:47:37: note: in definition of macro '__pmd'
47 | #define __pmd(x) ((pmd_t) { (x) })
| ^
vim +/PMD_TYPE_TABLE +1956 mm/huge_memory.c
1923
1924 static void __split_huge_zero_page_pmd(struct vm_area_struct *vma,
1925 unsigned long haddr, pmd_t *pmd)
1926 {
1927 struct mm_struct *mm = vma->vm_mm;
1928 pgtable_t pgtable;
1929 pmd_t _pmd;
1930 int i;
1931
1932 /*
1933 * Leave pmd empty until pte is filled note that it is fine to delay
1934 * notification until mmu_notifier_invalidate_range_end() as we are
1935 * replacing a zero pmd write protected page with a zero pte write
1936 * protected page.
1937 *
1938 * See Documentation/vm/mmu_notifier.rst
1939 */
1940 pmdp_huge_clear_flush(vma, haddr, pmd);
1941
1942 pgtable = pgtable_trans_huge_withdraw(mm, pmd);
1943 pmd_populate(mm, &_pmd, pgtable);
1944
1945 for (i = 0; i < HPAGE_PMD_NR; i++, haddr += PAGE_SIZE) {
1946 pte_t *pte, entry;
1947 entry = pfn_pte(my_zero_pfn(haddr), vma->vm_page_prot);
1948 entry = pte_mkspecial(entry);
1949 pte = pte_offset_map(&_pmd, haddr);
1950 VM_BUG_ON(!pte_none(*pte));
1951 set_pte_at(mm, haddr, pte, entry);
1952 pte_unmap(pte);
1953 }
1954 smp_wmb(); /* make pte visible before pmd */
1955 //pmd_populate(mm, pmd, pgtable);
> 1956 set_pmd_at(mm, haddr, pmd, __pmd(page_to_phys(pgtable) | PMD_TYPE_TABLE));
1957 }
1958
---
0-DAY CI Kernel Test Service, Intel Corporation
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