From: kernel test robot <lkp@intel.com>
To: Brendan Jackman <jackmanb@google.com>,
Andy Lutomirski <luto@kernel.org>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
Johannes Weiner <hannes@cmpxchg.org>, Zi Yan <ziy@nvidia.com>,
Axel Rasmussen <axelrasmussen@google.com>,
Yuanchu Xie <yuanchu@google.com>,
Roman Gushchin <roman.gushchin@linux.dev>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
bp@alien8.de, dave.hansen@linux.intel.com, mingo@redhat.com,
tglx@linutronix.de, akpm@linux-foundation.org, david@redhat.com,
derkling@google.com, junaids@google.com,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
reijiw@google.com, rientjes@google.com, rppt@kernel.org,
vbabka@suse.cz, x86@kernel.org, yosry.ahmed@linux.dev
Subject: Re: [PATCH 03/21] x86/mm: factor out phys_pgd_init()
Date: Sat, 27 Sep 2025 21:29:35 +0200 [thread overview]
Message-ID: <202509272136.N4ELb64u-lkp@intel.com> (raw)
In-Reply-To: <20250924-b4-asi-page-alloc-v1-3-2d861768041f@google.com>
Hi Brendan,
kernel test robot noticed the following build warnings:
[auto build test WARNING on bf2602a3cb2381fb1a04bf1c39a290518d2538d1]
url: https://github.com/intel-lab-lkp/linux/commits/Brendan-Jackman/x86-mm-asi-Add-CONFIG_MITIGATION_ADDRESS_SPACE_ISOLATION/20250924-230633
base: bf2602a3cb2381fb1a04bf1c39a290518d2538d1
patch link: https://lore.kernel.org/r/20250924-b4-asi-page-alloc-v1-3-2d861768041f%40google.com
patch subject: [PATCH 03/21] x86/mm: factor out phys_pgd_init()
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20250927/202509272136.N4ELb64u-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250927/202509272136.N4ELb64u-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202509272136.N4ELb64u-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> arch/x86/mm/init_64.c:747:23: warning: variable 'vaddr_start' set but not used [-Wunused-but-set-variable]
747 | unsigned long vaddr, vaddr_start, vaddr_end, vaddr_next, paddr_last;
| ^
1 warning generated.
vim +/vaddr_start +747 arch/x86/mm/init_64.c
7e82ea946ae4d0 arch/x86/mm/init_64.c Kirill A. Shutemov 2017-06-06 742
eccd906484d1cd arch/x86/mm/init_64.c Brijesh Singh 2019-04-17 743 static unsigned long __meminit
46b7f8ebabd0a2 arch/x86/mm/init_64.c Brendan Jackman 2025-09-24 744 phys_pgd_init(pgd_t *pgd_page, unsigned long paddr_start, unsigned long paddr_end,
46b7f8ebabd0a2 arch/x86/mm/init_64.c Brendan Jackman 2025-09-24 745 unsigned long page_size_mask, pgprot_t prot, bool init, bool *pgd_changed)
^1da177e4c3f41 arch/x86_64/mm/init.c Linus Torvalds 2005-04-16 746 {
59b3d0206d74a7 arch/x86/mm/init_64.c Thomas Garnier 2016-06-21 @747 unsigned long vaddr, vaddr_start, vaddr_end, vaddr_next, paddr_last;
^1da177e4c3f41 arch/x86_64/mm/init.c Linus Torvalds 2005-04-16 748
46b7f8ebabd0a2 arch/x86/mm/init_64.c Brendan Jackman 2025-09-24 749 *pgd_changed = false;
46b7f8ebabd0a2 arch/x86/mm/init_64.c Brendan Jackman 2025-09-24 750
59b3d0206d74a7 arch/x86/mm/init_64.c Thomas Garnier 2016-06-21 751 paddr_last = paddr_end;
59b3d0206d74a7 arch/x86/mm/init_64.c Thomas Garnier 2016-06-21 752 vaddr = (unsigned long)__va(paddr_start);
59b3d0206d74a7 arch/x86/mm/init_64.c Thomas Garnier 2016-06-21 753 vaddr_end = (unsigned long)__va(paddr_end);
59b3d0206d74a7 arch/x86/mm/init_64.c Thomas Garnier 2016-06-21 754 vaddr_start = vaddr;
^1da177e4c3f41 arch/x86_64/mm/init.c Linus Torvalds 2005-04-16 755
59b3d0206d74a7 arch/x86/mm/init_64.c Thomas Garnier 2016-06-21 756 for (; vaddr < vaddr_end; vaddr = vaddr_next) {
46b7f8ebabd0a2 arch/x86/mm/init_64.c Brendan Jackman 2025-09-24 757 pgd_t *pgd = pgd_offset_pgd(pgd_page, vaddr);
f2a6a7050109e0 arch/x86/mm/init_64.c Kirill A. Shutemov 2017-03-17 758 p4d_t *p4d;
44df75e629106e arch/x86_64/mm/init.c Matt Tolentino 2006-01-17 759
59b3d0206d74a7 arch/x86/mm/init_64.c Thomas Garnier 2016-06-21 760 vaddr_next = (vaddr & PGDIR_MASK) + PGDIR_SIZE;
4f9c11dd49fb73 arch/x86/mm/init_64.c Jeremy Fitzhardinge 2008-06-25 761
7e82ea946ae4d0 arch/x86/mm/init_64.c Kirill A. Shutemov 2017-06-06 762 if (pgd_val(*pgd)) {
7e82ea946ae4d0 arch/x86/mm/init_64.c Kirill A. Shutemov 2017-06-06 763 p4d = (p4d_t *)pgd_page_vaddr(*pgd);
7e82ea946ae4d0 arch/x86/mm/init_64.c Kirill A. Shutemov 2017-06-06 764 paddr_last = phys_p4d_init(p4d, __pa(vaddr),
59b3d0206d74a7 arch/x86/mm/init_64.c Thomas Garnier 2016-06-21 765 __pa(vaddr_end),
eccd906484d1cd arch/x86/mm/init_64.c Brijesh Singh 2019-04-17 766 page_size_mask,
c164fbb40c43f8 arch/x86/mm/init_64.c Logan Gunthorpe 2020-04-10 767 prot, init);
4f9c11dd49fb73 arch/x86/mm/init_64.c Jeremy Fitzhardinge 2008-06-25 768 continue;
4f9c11dd49fb73 arch/x86/mm/init_64.c Jeremy Fitzhardinge 2008-06-25 769 }
4f9c11dd49fb73 arch/x86/mm/init_64.c Jeremy Fitzhardinge 2008-06-25 770
7e82ea946ae4d0 arch/x86/mm/init_64.c Kirill A. Shutemov 2017-06-06 771 p4d = alloc_low_page();
7e82ea946ae4d0 arch/x86/mm/init_64.c Kirill A. Shutemov 2017-06-06 772 paddr_last = phys_p4d_init(p4d, __pa(vaddr), __pa(vaddr_end),
c164fbb40c43f8 arch/x86/mm/init_64.c Logan Gunthorpe 2020-04-10 773 page_size_mask, prot, init);
8ae3a5a8dff2c9 arch/x86/mm/init_64.c Jan Beulich 2008-08-21 774
8ae3a5a8dff2c9 arch/x86/mm/init_64.c Jan Beulich 2008-08-21 775 spin_lock(&init_mm.page_table_lock);
ed7588d5dc6f5e arch/x86/mm/init_64.c Kirill A. Shutemov 2018-05-18 776 if (pgtable_l5_enabled())
eccd906484d1cd arch/x86/mm/init_64.c Brijesh Singh 2019-04-17 777 pgd_populate_init(&init_mm, pgd, p4d, init);
7e82ea946ae4d0 arch/x86/mm/init_64.c Kirill A. Shutemov 2017-06-06 778 else
eccd906484d1cd arch/x86/mm/init_64.c Brijesh Singh 2019-04-17 779 p4d_populate_init(&init_mm, p4d_offset(pgd, vaddr),
eccd906484d1cd arch/x86/mm/init_64.c Brijesh Singh 2019-04-17 780 (pud_t *) p4d, init);
eccd906484d1cd arch/x86/mm/init_64.c Brijesh Singh 2019-04-17 781
8ae3a5a8dff2c9 arch/x86/mm/init_64.c Jan Beulich 2008-08-21 782 spin_unlock(&init_mm.page_table_lock);
46b7f8ebabd0a2 arch/x86/mm/init_64.c Brendan Jackman 2025-09-24 783 *pgd_changed = true;
46b7f8ebabd0a2 arch/x86/mm/init_64.c Brendan Jackman 2025-09-24 784 }
46b7f8ebabd0a2 arch/x86/mm/init_64.c Brendan Jackman 2025-09-24 785
46b7f8ebabd0a2 arch/x86/mm/init_64.c Brendan Jackman 2025-09-24 786 return paddr_last;
^1da177e4c3f41 arch/x86_64/mm/init.c Linus Torvalds 2005-04-16 787 }
9b861528a8012e arch/x86/mm/init_64.c Haicheng Li 2010-08-20 788
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next prev parent reply other threads:[~2025-09-27 19:30 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-24 14:59 [PATCH 00/21] mm: ASI direct map management Brendan Jackman
2025-09-24 14:59 ` [PATCH 01/21] x86/mm/asi: Add CONFIG_MITIGATION_ADDRESS_SPACE_ISOLATION Brendan Jackman
2025-10-24 22:37 ` Borislav Petkov
2025-10-24 23:32 ` Brendan Jackman
2025-10-25 9:57 ` Borislav Petkov
2025-09-24 14:59 ` [PATCH 02/21] x86/mm/asi: add X86_FEATURE_ASI and asi= Brendan Jackman
2025-10-25 10:06 ` Borislav Petkov
2025-10-26 22:24 ` Brendan Jackman
2025-11-10 11:26 ` Borislav Petkov
2025-11-10 12:15 ` Brendan Jackman
2025-09-24 14:59 ` [PATCH 03/21] x86/mm: factor out phys_pgd_init() Brendan Jackman
2025-09-27 19:29 ` kernel test robot [this message]
2025-10-01 12:26 ` Brendan Jackman
2025-10-25 11:48 ` Borislav Petkov
2025-10-26 22:29 ` Brendan Jackman
2025-11-10 11:38 ` Borislav Petkov
2025-11-10 12:36 ` Brendan Jackman
2025-09-24 14:59 ` [PATCH 04/21] x86/mm/asi: set up asi_nonsensitive_pgd Brendan Jackman
2025-10-01 20:28 ` Dave Hansen
2025-10-02 14:05 ` Brendan Jackman
2025-10-02 16:14 ` Dave Hansen
2025-10-02 17:19 ` Brendan Jackman
2025-11-12 19:39 ` Dave Hansen
2025-11-11 14:55 ` Borislav Petkov
2025-11-11 17:53 ` Brendan Jackman
2025-09-24 14:59 ` [PATCH 05/21] x86/mm/pat: mirror direct map changes to ASI Brendan Jackman
2025-09-25 13:36 ` kernel test robot
2025-10-01 20:50 ` Dave Hansen
2025-10-02 14:31 ` Brendan Jackman
2025-10-02 16:40 ` Dave Hansen
2025-10-02 17:08 ` Brendan Jackman
2025-09-24 14:59 ` [PATCH 06/21] mm/page_alloc: add __GFP_SENSITIVE and always set it Brendan Jackman
2025-10-01 21:18 ` Dave Hansen
2025-10-02 14:34 ` Brendan Jackman
2025-09-24 14:59 ` [PATCH 07/21] mm: introduce for_each_free_list() Brendan Jackman
2025-09-24 14:59 ` [PATCH 08/21] mm: rejig pageblock mask definitions Brendan Jackman
2025-09-24 14:59 ` [PATCH 09/21] mm/page_alloc: Invert is_check_pages_enabled() check Brendan Jackman
2025-09-24 14:59 ` [PATCH 10/21] mm/page_alloc: remove ifdefs from pindex helpers Brendan Jackman
2025-09-24 14:59 ` [PATCH 11/21] mm: introduce freetype_t Brendan Jackman
2025-09-25 13:15 ` kernel test robot
2025-10-01 21:20 ` Dave Hansen
2025-10-02 14:39 ` Brendan Jackman
2025-09-24 14:59 ` [PATCH 12/21] mm/asi: encode sensitivity in freetypes and pageblocks Brendan Jackman
2025-09-24 14:59 ` [PATCH 13/21] mm/page_alloc_test: unit test pindex helpers Brendan Jackman
2025-09-25 13:36 ` kernel test robot
2025-09-24 14:59 ` [PATCH 14/21] x86/mm/pat: introduce cpa_fault option Brendan Jackman
2025-09-24 14:59 ` [PATCH 15/21] mm/page_alloc: rename ALLOC_NON_BLOCK back to _HARDER Brendan Jackman
2025-09-24 14:59 ` [PATCH 16/21] mm/page_alloc: introduce ALLOC_NOBLOCK Brendan Jackman
2025-09-24 14:59 ` [PATCH 17/21] mm/slub: defer application of gfp_allowed_mask Brendan Jackman
2025-09-24 14:59 ` [PATCH 18/21] mm/asi: support changing pageblock sensitivity Brendan Jackman
2025-09-24 14:59 ` [PATCH 19/21] mm/asi: bad_page() when ASI mappings are wrong Brendan Jackman
2025-09-24 14:59 ` [PATCH 20/21] x86/mm/asi: don't use global pages when ASI enabled Brendan Jackman
2025-09-24 14:59 ` [PATCH 21/21] mm: asi_test: smoke test for [non]sensitive page allocs Brendan Jackman
2025-09-25 17:51 ` [PATCH 00/21] mm: ASI direct map management Brendan Jackman
2025-09-30 19:51 ` Konrad Rzeszutek Wilk
2025-10-01 7:12 ` Brendan Jackman
2025-10-01 19:54 ` Dave Hansen
2025-10-01 20:22 ` Yosry Ahmed
2025-10-01 20:30 ` Dave Hansen
2025-10-02 11:05 ` Brendan Jackman
2025-10-01 20:59 ` Dave Hansen
2025-10-02 7:34 ` David Hildenbrand
2025-10-02 11:23 ` Brendan Jackman
2025-10-02 17:01 ` Dave Hansen
2025-10-02 19:19 ` Brendan Jackman
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