linux-kernel - Re: [PATCH v4 5/6] arm64: mm: Convert to GENERIC

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Date:   Tue, 7 Jun 2022 01:41:35 +0800
From:   kernel test robot <lkp@...el.com>
To:     Kefeng Wang <wangkefeng.wang@...wei.com>, catalin.marinas@....com,
        will@...nel.org, akpm@...ux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     kbuild-all@...ts.01.org, linux-mm@...ck.org, hch@...radead.org,
        arnd@...db.de, anshuman.khandual@....com,
        Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: Re: [PATCH v4 5/6] arm64: mm: Convert to GENERIC_IOREMAP

Hi Kefeng,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.19-rc1 next-20220606]
[cannot apply to arm64/for-next/core arnd-asm-generic/master 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]

url:    https://github.com/intel-lab-lkp/linux/commits/Kefeng-Wang/arm64-Cleanup-ioremap-and-support-ioremap_prot/20220606-154131
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f2906aa863381afb0015a9eb7fefad885d4e5a56
config: arm64-randconfig-s032-20220605 (https://download.01.org/0day-ci/archive/20220607/202206070159.mnbdPS9W-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-18-g56afb504-dirty
        # https://github.com/intel-lab-lkp/linux/commit/3fd9e961045f81f0ee188501228f8425c3d868a8
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Kefeng-Wang/arm64-Cleanup-ioremap-and-support-ioremap_prot/20220606-154131
        git checkout 3fd9e961045f81f0ee188501228f8425c3d868a8
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/mm/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>


sparse warnings: (new ones prefixed by >>)
>> arch/arm64/mm/ioremap.c:28:32: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const *x @@     got void [noderef] __iomem *addr @@
   arch/arm64/mm/ioremap.c:28:32: sparse:     expected void const *x
   arch/arm64/mm/ioremap.c:28:32: sparse:     got void [noderef] __iomem *addr

vim +28 arch/arm64/mm/ioremap.c

    21	
    22	int iounmap_allowed(void __iomem *addr)
    23	{
    24		/*
    25		 * We could get an address outside vmalloc range in case
    26		 * of ioremap_cache() reusing a RAM mapping.
    27		 */
  > 28		return is_vmalloc_addr(addr) ? 0 : -EINVAL;
    29	}
    30	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp