From: kernel test robot <lkp@intel.com>
To: Harry Yoo <harry.yoo@oracle.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Arnd Bergmann <arnd@arndb.de>,
Andrew Morton <akpm@linux-foundation.org>,
Dennis Zhou <dennis@kernel.org>, Tejun Heo <tj@kernel.org>,
Christoph Lameter <cl@linux-foundation.org>
Cc: oe-kbuild-all@lists.linux.dev,
Linux Memory Management List <linux-mm@kvack.org>,
"H . Peter Anvin" <hpa@zytor.com>,
Alexander Potapenko <glider@google.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Dmitry Vyukov <dvyukov@google.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Juergen Gross <jgross@suse.com>,
Kevin Brodsky <kevin.brodsky@arm.com>,
Muchun Song <muchun.song@linux.dev>,
Oscar Salvador <osalvador@suse.de>,
Joao Martins <joao.m.martins@oracle.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Jane Chu <jane.chu@oracle.com>,
Alistair Popple <apopple@nvidia.com>,
Mike Rapoport <rppt@kernel.org>,
David Hildenbrand <david@redhat.com>,
Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>,
"Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>
Subject: Re: [PATCH v2 mm-hotfixes 1/5] mm: move page table sync declarations to asm/pgalloc.h
Date: Mon, 21 Jul 2025 11:40:10 +0800 [thread overview]
Message-ID: <202507211129.Xbn2bAOg-lkp@intel.com> (raw)
In-Reply-To: <20250720234203.9126-2-harry.yoo@oracle.com>
Hi Harry,
kernel test robot noticed the following build warnings:
[auto build test WARNING on akpm-mm/mm-everything]
url: https://github.com/intel-lab-lkp/linux/commits/Harry-Yoo/mm-move-page-table-sync-declarations-to-asm-pgalloc-h/20250721-074448
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20250720234203.9126-2-harry.yoo%40oracle.com
patch subject: [PATCH v2 mm-hotfixes 1/5] mm: move page table sync declarations to asm/pgalloc.h
config: i386-buildonly-randconfig-003-20250721 (https://download.01.org/0day-ci/archive/20250721/202507211129.Xbn2bAOg-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250721/202507211129.Xbn2bAOg-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/202507211129.Xbn2bAOg-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> arch/x86/mm/fault.c:265:6: warning: no previous prototype for 'arch_sync_kernel_mappings' [-Wmissing-prototypes]
265 | void arch_sync_kernel_mappings(unsigned long start, unsigned long end)
| ^~~~~~~~~~~~~~~~~~~~~~~~~
vim +/arch_sync_kernel_mappings +265 arch/x86/mm/fault.c
4819e15f740ec88 Joerg Roedel 2020-09-02 264
1e15d374bb1cb95 Alexander Potapenko 2023-01-11 @265 void arch_sync_kernel_mappings(unsigned long start, unsigned long end)
f2f13a8535174db Ingo Molnar 2009-02-20 266 {
86cf69f1d893d48 Joerg Roedel 2020-06-01 267 unsigned long addr;
f2f13a8535174db Ingo Molnar 2009-02-20 268
86cf69f1d893d48 Joerg Roedel 2020-06-01 269 for (addr = start & PMD_MASK;
86cf69f1d893d48 Joerg Roedel 2020-06-01 270 addr >= TASK_SIZE_MAX && addr < VMALLOC_END;
86cf69f1d893d48 Joerg Roedel 2020-06-01 271 addr += PMD_SIZE) {
f2f13a8535174db Ingo Molnar 2009-02-20 272 struct page *page;
f2f13a8535174db Ingo Molnar 2009-02-20 273
a79e53d85683c6d Andrea Arcangeli 2011-02-16 274 spin_lock(&pgd_lock);
f2f13a8535174db Ingo Molnar 2009-02-20 275 list_for_each_entry(page, &pgd_list, lru) {
617d34d9e5d8326 Jeremy Fitzhardinge 2010-09-21 276 spinlock_t *pgt_lock;
617d34d9e5d8326 Jeremy Fitzhardinge 2010-09-21 277
a79e53d85683c6d Andrea Arcangeli 2011-02-16 278 /* the pgt_lock only for Xen */
617d34d9e5d8326 Jeremy Fitzhardinge 2010-09-21 279 pgt_lock = &pgd_page_get_mm(page)->page_table_lock;
617d34d9e5d8326 Jeremy Fitzhardinge 2010-09-21 280
617d34d9e5d8326 Jeremy Fitzhardinge 2010-09-21 281 spin_lock(pgt_lock);
86cf69f1d893d48 Joerg Roedel 2020-06-01 282 vmalloc_sync_one(page_address(page), addr);
617d34d9e5d8326 Jeremy Fitzhardinge 2010-09-21 283 spin_unlock(pgt_lock);
f2f13a8535174db Ingo Molnar 2009-02-20 284 }
a79e53d85683c6d Andrea Arcangeli 2011-02-16 285 spin_unlock(&pgd_lock);
f2f13a8535174db Ingo Molnar 2009-02-20 286 }
f2f13a8535174db Ingo Molnar 2009-02-20 287 }
f2f13a8535174db Ingo Molnar 2009-02-20 288
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next prev parent reply other threads:[~2025-07-21 3:40 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-20 23:41 [PATCH v2 mm-hotfixes 0/5] mm, arch: a more robust approach to sync top level kernel page tables Harry Yoo
2025-07-20 23:41 ` [PATCH v2 mm-hotfixes 1/5] mm: move page table sync declarations to asm/pgalloc.h Harry Yoo
2025-07-21 2:56 ` kernel test robot
2025-07-21 3:40 ` kernel test robot [this message]
2025-07-21 11:38 ` Lorenzo Stoakes
2025-07-21 12:10 ` Harry Yoo
2025-07-21 12:15 ` Lorenzo Stoakes
2025-07-20 23:42 ` [PATCH v2 mm-hotfixes 2/5] mm: introduce and use {pgd,p4d}_populate_kernel() Harry Yoo
2025-07-20 23:42 ` [PATCH v2 mm-hotfixes 3/5] x86/mm: define ARCH_PAGE_TABLE_SYNC_MASK and arch_sync_kernel_mappings() Harry Yoo
2025-07-21 7:06 ` kernel test robot
2025-07-20 23:42 ` [PATCH v2 mm-hotfixes 4/5] x86/mm: convert p*d_populate{,_init} to _kernel variants Harry Yoo
2025-07-20 23:42 ` [PATCH v2 mm-hotfixes 5/5] x86/mm: drop unnecessary calls to sync_global_pgds() and fold into its sole user Harry Yoo
2025-07-20 23:57 ` [PATCH v2 mm-hotfixes 0/5] mm, arch: a more robust approach to sync top level kernel page tables Harry Yoo
2025-07-21 11:46 ` Harry Yoo
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