linux-kernel - Re: [v4 05/15] mm/migrate_device: handle partially mapped folios during collection

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Message-ID: <202509041732.UTJsw3LB-lkp@intel.com>
Date: Thu, 4 Sep 2025 17:37:09 +0800
From: kernel test robot <lkp@...el.com>
To: Balbir Singh <balbirs@...dia.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Cc: oe-kbuild-all@...ts.linux.dev, damon@...ts.linux.dev,
	dri-devel@...ts.freedesktop.org, Balbir Singh <balbirs@...dia.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Memory Management List <linux-mm@...ck.org>,
	David Hildenbrand <david@...hat.com>, Zi Yan <ziy@...dia.com>,
	Joshua Hahn <joshua.hahnjy@...il.com>, Rakie Kim <rakie.kim@...com>,
	Byungchul Park <byungchul@...com>,
	Gregory Price <gourry@...rry.net>,
	Ying Huang <ying.huang@...ux.alibaba.com>,
	Alistair Popple <apopple@...dia.com>,
	Oscar Salvador <osalvador@...e.de>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	Baolin Wang <baolin.wang@...ux.alibaba.com>,
	"Liam R. Howlett" <Liam.Howlett@...cle.com>,
	Nico Pache <npache@...hat.com>, Ryan Roberts <ryan.roberts@....com>,
	Dev Jain <dev.jain@....com>, Barry Song <baohua@...nel.org>,
	Lyude Paul <lyude@...hat.com>, Danilo Krummrich <dakr@...nel.org>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Ralph Campbell <rcampbell@...dia.com>,
	Mika Penttilä <mpenttil@...hat.com>,
	Matthew Brost <matthew.brost@...el.com>
Subject: Re: [v4 05/15] mm/migrate_device: handle partially mapped folios
 during collection

Hi Balbir,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-nonmm-unstable]
[also build test WARNING on sj/damon/next linus/master v6.17-rc4 next-20250904]
[cannot apply to akpm-mm/mm-everything]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Balbir-Singh/mm-zone_device-support-large-zone-device-private-folios/20250903-092241
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable
patch link:    https://lore.kernel.org/r/20250903011900.3657435-6-balbirs%40nvidia.com
patch subject: [v4 05/15] mm/migrate_device: handle partially mapped folios during collection
config: arm64-randconfig-001-20250904 (https://download.01.org/0day-ci/archive/20250904/202509041732.UTJsw3LB-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250904/202509041732.UTJsw3LB-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202509041732.UTJsw3LB-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> Warning: mm/migrate_device.c:66 function parameter 'folio' not described in 'migrate_vma_split_folio'
>> Warning: mm/migrate_device.c:66 function parameter 'fault_page' not described in 'migrate_vma_split_folio'

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki