tree: git://git.cmpxchg.org/linux-mmotm.git master
head: def6be39d5629b938faba788330db817d19a04da
commit: 1990c272782cac2f2d215067e0b053dd38fb9197 [163/317] mm/hmm: kconfig split HMM address space mirroring from device memory
config: riscv-allyesconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 8.1.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 1990c272782cac2f2d215067e0b053dd38fb9197
# save the attached .config to linux build tree
GCC_VERSION=8.1.0 make.cross ARCH=riscv
All errors (new ones prefixed by >>):
mm/hmm.c: In function 'hmm_vma_handle_pmd':
>> mm/hmm.c:537:8: error: implicit declaration of function 'pmd_pfn'; did you mean 'pte_pfn'? [-Werror=implicit-function-declaration]
pfn = pmd_pfn(pmd) + pte_index(addr);
^~~~~~~
pte_pfn
mm/hmm.c: In function 'hmm_vma_walk_pud':
>> mm/hmm.c:795:9: error: implicit declaration of function 'pud_pfn'; did you mean 'pte_pfn'? [-Werror=implicit-function-declaration]
pfn = pud_pfn(pud) + ((addr & ~PUD_MASK) >> PAGE_SHIFT);
^~~~~~~
pte_pfn
mm/hmm.c: In function 'hmm_range_snapshot':
mm/hmm.c:1018:19: warning: unused variable 'h' [-Wunused-variable]
struct hstate *h = hstate_vma(vma);
^
cc1: some warnings being treated as errors
vim +537 mm/hmm.c
c49fcd0d4 Jérôme Glisse 2019-04-17 516
53f5c3f48 Jérôme Glisse 2018-04-10 517 static int hmm_vma_handle_pmd(struct mm_walk *walk,
53f5c3f48 Jérôme Glisse 2018-04-10 518 unsigned long addr,
da4c3c735 Jérôme Glisse 2017-09-08 519 unsigned long end,
53f5c3f48 Jérôme Glisse 2018-04-10 520 uint64_t *pfns,
53f5c3f48 Jérôme Glisse 2018-04-10 521 pmd_t pmd)
da4c3c735 Jérôme Glisse 2017-09-08 522 {
74eee180b Jérôme Glisse 2017-09-08 523 struct hmm_vma_walk *hmm_vma_walk = walk->private;
f88a1e90c Jérôme Glisse 2018-04-10 524 struct hmm_range *range = hmm_vma_walk->range;
2aee09d8c Jérôme Glisse 2018-04-10 525 unsigned long pfn, npages, i;
2aee09d8c Jérôme Glisse 2018-04-10 526 bool fault, write_fault;
f88a1e90c Jérôme Glisse 2018-04-10 527 uint64_t cpu_flags;
da4c3c735 Jérôme Glisse 2017-09-08 528
2aee09d8c Jérôme Glisse 2018-04-10 529 npages = (end - addr) >> PAGE_SHIFT;
f88a1e90c Jérôme Glisse 2018-04-10 530 cpu_flags = pmd_to_hmm_pfn_flags(range, pmd);
2aee09d8c Jérôme Glisse 2018-04-10 531 hmm_range_need_fault(hmm_vma_walk, pfns, npages, cpu_flags,
2aee09d8c Jérôme Glisse 2018-04-10 532 &fault, &write_fault);
da4c3c735 Jérôme Glisse 2017-09-08 533
2aee09d8c Jérôme Glisse 2018-04-10 534 if (pmd_protnone(pmd) || fault || write_fault)
2aee09d8c Jérôme Glisse 2018-04-10 535 return hmm_vma_walk_hole_(addr, end, fault, write_fault, walk);
74eee180b Jérôme Glisse 2017-09-08 536
da4c3c735 Jérôme Glisse 2017-09-08 @537 pfn = pmd_pfn(pmd) + pte_index(addr);
c49fcd0d4 Jérôme Glisse 2019-04-17 538 for (i = 0; addr < end; addr += PAGE_SIZE, i++, pfn++) {
c49fcd0d4 Jérôme Glisse 2019-04-17 539 if (pmd_devmap(pmd)) {
c49fcd0d4 Jérôme Glisse 2019-04-17 540 hmm_vma_walk->pgmap = get_dev_pagemap(pfn,
c49fcd0d4 Jérôme Glisse 2019-04-17 541 hmm_vma_walk->pgmap);
c49fcd0d4 Jérôme Glisse 2019-04-17 542 if (unlikely(!hmm_vma_walk->pgmap))
c49fcd0d4 Jérôme Glisse 2019-04-17 543 return -EBUSY;
c49fcd0d4 Jérôme Glisse 2019-04-17 544 }
7cd123b65 Jérôme Glisse 2019-04-17 545 pfns[i] = hmm_device_entry_from_pfn(range, pfn) | cpu_flags;
c49fcd0d4 Jérôme Glisse 2019-04-17 546 }
c49fcd0d4 Jérôme Glisse 2019-04-17 547 if (hmm_vma_walk->pgmap) {
c49fcd0d4 Jérôme Glisse 2019-04-17 548 put_dev_pagemap(hmm_vma_walk->pgmap);
c49fcd0d4 Jérôme Glisse 2019-04-17 549 hmm_vma_walk->pgmap = NULL;
c49fcd0d4 Jérôme Glisse 2019-04-17 550 }
53f5c3f48 Jérôme Glisse 2018-04-10 551 hmm_vma_walk->last = end;
da4c3c735 Jérôme Glisse 2017-09-08 552 return 0;
da4c3c735 Jérôme Glisse 2017-09-08 553 }
da4c3c735 Jérôme Glisse 2017-09-08 554
:::::: The code at line 537 was first introduced by commit
:::::: da4c3c735ea4dcc2a0b0ff0bd4803c336361b6f5 mm/hmm/mirror: helper to snapshot CPU page table
:::::: TO: Jérôme Glisse <jglisse@xxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
Attachment:
.config.gz
Description: application/gzip
