* Re: [PATCH] swiotlb: avoid double copy with swiotlb on tx socket
[not found] <20260615234220.3946885-1-lrizzo@google.com>
@ 2026-06-16 5:31 ` kernel test robot
2026-06-16 8:01 ` kernel test robot
1 sibling, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-06-16 5:31 UTC (permalink / raw)
To: Luigi Rizzo, rizzo.unipi, m.szyprowski, robin.murphy, willemb,
kuniyu, davem, edumazet, kuba, pabeni
Cc: llvm, oe-kbuild-all, gregkh, rafael, akpm, david, netdev,
linux-mm, iommu, driver-core, linux-kernel
Hi Luigi,
kernel test robot noticed the following build warnings:
[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on linus/master v7.1 next-20260615]
[cannot apply to driver-core/driver-core-testing driver-core/driver-core-next driver-core/driver-core-linus]
[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/Luigi-Rizzo/swiotlb-avoid-double-copy-with-swiotlb-on-tx-socket/20260616-074655
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20260615234220.3946885-1-lrizzo%40google.com
patch subject: [PATCH] swiotlb: avoid double copy with swiotlb on tx socket
config: powerpc-pmac32_defconfig (https://download.01.org/0day-ci/archive/20260616/202606161322.zGyw68Qa-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project e19d1f51a2c80b63cd8ca95bcc757b7077112808)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260616/202606161322.zGyw68Qa-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/202606161322.zGyw68Qa-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> Warning: net/core/sock.c:3215 function parameter 'sk' not described in '__skb_page_frag_refill'
>> Warning: net/core/sock.c:3215 expecting prototype for skb_page_frag_refill(). Prototype was for __skb_page_frag_refill() instead
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH] swiotlb: avoid double copy with swiotlb on tx socket
[not found] <20260615234220.3946885-1-lrizzo@google.com>
2026-06-16 5:31 ` [PATCH] swiotlb: avoid double copy with swiotlb on tx socket kernel test robot
@ 2026-06-16 8:01 ` kernel test robot
1 sibling, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-06-16 8:01 UTC (permalink / raw)
To: Luigi Rizzo, rizzo.unipi, m.szyprowski, robin.murphy, willemb,
kuniyu, davem, edumazet, kuba, pabeni
Cc: llvm, oe-kbuild-all, gregkh, rafael, akpm, david, netdev,
linux-mm, iommu, driver-core, linux-kernel
Hi Luigi,
kernel test robot noticed the following build warnings:
[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on linus/master v7.1 next-20260615]
[cannot apply to driver-core/driver-core-testing driver-core/driver-core-next driver-core/driver-core-linus]
[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/Luigi-Rizzo/swiotlb-avoid-double-copy-with-swiotlb-on-tx-socket/20260616-074655
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20260615234220.3946885-1-lrizzo%40google.com
patch subject: [PATCH] swiotlb: avoid double copy with swiotlb on tx socket
config: loongarch-allnoconfig (https://download.01.org/0day-ci/archive/20260616/202606161519.z7SY98jp-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/20260616/202606161519.z7SY98jp-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/202606161519.z7SY98jp-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> mm/page_alloc.c:721:17: warning: unused variable 'folio' [-Wunused-variable]
721 | struct folio *folio = (struct folio *)page;
| ^~~~~
1 warning generated.
--
>> Warning: kernel/dma/swiotlb.c:95 cannot understand function prototype: 'atomic_t global_device_serial = ATOMIC_INIT(0);'
>> Warning: kernel/dma/swiotlb.c:2087 function parameter 'where_debug_only' not described in 'swiotlb_free_pages'
>> Warning: kernel/dma/swiotlb.c:2087 function parameter 'where_debug_only' not described in 'swiotlb_free_pages'
vim +/folio +721 mm/page_alloc.c
717
718 void swiotlb_destroy_compound_page(struct page *page, unsigned int order)
719 {
720 if (order > 0) {
> 721 struct folio *folio = (struct folio *)page;
722
723 __ClearPageHead(page);
724 page[1].flags.f &= ~PAGE_FLAGS_SECOND;
725 #ifdef NR_PAGES_IN_LARGE_FOLIO
726 folio->_nr_pages = 0;
727 #endif
728 for (int i = 1; i < (1 << order); i++) {
729 page[i].mapping = NULL;
730 clear_compound_head(&page[i]);
731 }
732 }
733 }
734 #endif /* CONFIG_SWIOTLB */
735
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread