Subject: Re: [PATCH v3 04/13] mm/slab: Allow kmalloc() minimum alignment fallback to dma_get_cache_alignment()

From: Catalin Marinas <[email-masked]>
Date: Mon, 7 Nov 2022 09:22:33 +0000

On Mon, Nov 07, 2022 at 08:50:31AM +0800, kernel test robot wrote:
> url:    https://github.com/intel-lab-lkp/linux/commits/Catalin-Marinas/mm-dma-arm64-Reduce-ARCH_KMALLOC_MINALIGN-to-8/20221107-060303
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
> patch link:    https://lore.kernel.org/r/20221106220143.2129263-5-catalin.marinas%40arm.com
> patch subject: [PATCH v3 04/13] mm/slab: Allow kmalloc() minimum alignment fallback to dma_get_cache_alignment()
> config: parisc-randconfig-r003-20221106
> compiler: hppa-linux-gcc (GCC) 12.1.0
> 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
>         # https://github.com/intel-lab-lkp/linux/commit/309bc52a1ed9665a1b9d32bcf094918ceb6af519
>         git remote add linux-review https://github.com/intel-lab-lkp/linux
>         git fetch --no-tags linux-review Catalin-Marinas/mm-dma-arm64-Reduce-ARCH_KMALLOC_MINALIGN-to-8/20221107-060303
>         git checkout 309bc52a1ed9665a1b9d32bcf094918ceb6af519
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=parisc SHELL=/bin/bash
> 
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <[email-masked]>
> 
> All errors (new ones prefixed by >>):
> 
>    mm/slab_common.c: In function '__kmalloc_minalign':
> >> mm/slab_common.c:866:52: error: 'io_tlb_default_mem' undeclared (first use in this function)
>      866 |             cache_align < ARCH_KMALLOC_MINALIGN || io_tlb_default_mem.nslabs)
>          |                                                    ^~~~~~~~~~~~~~~~~~
>    mm/slab_common.c:866:52: note: each undeclared identifier is reported only once for each function it appears in

Thanks for this. It looks like I didn't test the series with
CONFIG_SWIOTLB disabled.

-- 
Catalin

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