From: kernel test robot <lkp@intel.com>
To: Oscar Salvador <osalvador@suse.de>,
Andrew Morton <akpm@linux-foundation.org>
Cc: kbuild-all@lists.01.org, clang-built-linux@googlegroups.com,
Linux Memory Management List <linux-mm@kvack.org>,
David Hildenbrand <david@redhat.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
x86@kernel.org
Subject: Re: [PATCH 2/2] x86/vmemmap: Handle unpopulated sub-pmd ranges
Date: Wed, 3 Feb 2021 04:17:23 +0800 [thread overview]
Message-ID: <202102030423.O8kPBJCO-lkp@intel.com> (raw)
In-Reply-To: <20210202112450.11932-3-osalvador@suse.de>
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Hi Oscar,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on tip/x86/mm]
[also build test ERROR on hnaz-linux-mm/master v5.11-rc6 next-20210125]
[cannot apply to luto/next]
[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/Oscar-Salvador/Cleanup-and-fixups-for-vmemmap-handling/20210202-192636
base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 167dcfc08b0b1f964ea95d410aa496fd78adf475
config: x86_64-randconfig-r004-20210202 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 275c6af7d7f1ed63a03d05b4484413e447133269)
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
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# https://github.com/0day-ci/linux/commit/2995155f4651bbb8c0d5f2e58e6e77321c5a889a
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Oscar-Salvador/Cleanup-and-fixups-for-vmemmap-handling/20210202-192636
git checkout 2995155f4651bbb8c0d5f2e58e6e77321c5a889a
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
>> arch/x86/mm/init_64.c:1588:6: error: implicit declaration of function 'vmemmap_use_new_sub_pmd' [-Werror,-Wimplicit-function-declaration]
vmemmap_use_new_sub_pmd(addr, next);
^
>> arch/x86/mm/init_64.c:1594:4: error: implicit declaration of function 'vmemmap_use_sub_pmd' [-Werror,-Wimplicit-function-declaration]
vmemmap_use_sub_pmd(addr, next);
^
2 errors generated.
vim +/vmemmap_use_new_sub_pmd +1588 arch/x86/mm/init_64.c
1535
1536 static int __meminit vmemmap_populate_hugepages(unsigned long start,
1537 unsigned long end, int node, struct vmem_altmap *altmap)
1538 {
1539 unsigned long addr;
1540 unsigned long next;
1541 pgd_t *pgd;
1542 p4d_t *p4d;
1543 pud_t *pud;
1544 pmd_t *pmd;
1545
1546 for (addr = start; addr < end; addr = next) {
1547 next = pmd_addr_end(addr, end);
1548
1549 pgd = vmemmap_pgd_populate(addr, node);
1550 if (!pgd)
1551 return -ENOMEM;
1552
1553 p4d = vmemmap_p4d_populate(pgd, addr, node);
1554 if (!p4d)
1555 return -ENOMEM;
1556
1557 pud = vmemmap_pud_populate(p4d, addr, node);
1558 if (!pud)
1559 return -ENOMEM;
1560
1561 pmd = pmd_offset(pud, addr);
1562 if (pmd_none(*pmd)) {
1563 void *p;
1564
1565 p = vmemmap_alloc_block_buf(PMD_SIZE, node, altmap);
1566 if (p) {
1567 pte_t entry;
1568
1569 entry = pfn_pte(__pa(p) >> PAGE_SHIFT,
1570 PAGE_KERNEL_LARGE);
1571 set_pmd(pmd, __pmd(pte_val(entry)));
1572
1573 /* check to see if we have contiguous blocks */
1574 if (p_end != p || node_start != node) {
1575 if (p_start)
1576 pr_debug(" [%lx-%lx] PMD -> [%p-%p] on node %d\n",
1577 addr_start, addr_end-1, p_start, p_end-1, node_start);
1578 addr_start = addr;
1579 node_start = node;
1580 p_start = p;
1581 }
1582
1583 addr_end = addr + PMD_SIZE;
1584 p_end = p + PMD_SIZE;
1585
1586 if (!IS_ALIGNED(addr, PMD_SIZE) ||
1587 !IS_ALIGNED(next, PMD_SIZE))
> 1588 vmemmap_use_new_sub_pmd(addr, next);
1589 continue;
1590 } else if (altmap)
1591 return -ENOMEM; /* no fallback */
1592 } else if (pmd_large(*pmd)) {
1593 vmemmap_verify((pte_t *)pmd, node, addr, next);
> 1594 vmemmap_use_sub_pmd(addr, next);
1595 continue;
1596 }
1597 if (vmemmap_populate_basepages(addr, next, node, NULL))
1598 return -ENOMEM;
1599 }
1600 return 0;
1601 }
1602
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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prev parent reply other threads:[~2021-02-02 20:17 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-02 11:24 [PATCH 0/2] Cleanup and fixups for vmemmap handling Oscar Salvador
2021-02-02 11:24 ` [PATCH 1/2] x86/vmemmap: Remove !PAGE_ALIGNED case in remove_pte_table Oscar Salvador
2021-02-02 13:20 ` David Hildenbrand
2021-02-02 11:24 ` [PATCH 2/2] x86/vmemmap: Handle unpopulated sub-pmd ranges Oscar Salvador
2021-02-02 13:29 ` David Hildenbrand
2021-02-02 13:52 ` Oscar Salvador
2021-02-02 20:17 ` kernel test robot [this message]
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