linux-kernel - Re: [PATCH v4 1/4] riscv: Move kernel mapping to vmalloc zone

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Message-ID: <202006040247.dAJjfnJW%lkp@intel.com>
Date:   Thu, 4 Jun 2020 02:36:22 +0800
From:   kernel test robot <lkp@...el.com>
To:     Alexandre Ghiti <alex@...ti.fr>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Anup Patel <Anup.Patel@....com>,
        Atish Patra <Atish.Patra@....com>,
        Zong Li <zong.li@...ive.com>, linux-kernel@...r.kernel.org
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com
Subject: Re: [PATCH v4 1/4] riscv: Move kernel mapping to vmalloc zone

Hi Alexandre,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on powerpc/next]
[also build test WARNING on linus/master v5.7 next-20200603]
[cannot apply to mpe/next atish-riscv-linux/topo_v3]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Alexandre-Ghiti/vmalloc-kernel-mapping-and-relocatable-kernel/20200603-160652
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: riscv-randconfig-r013-20200603 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 16437992cac249f6fe1efd392d20e3469b47e39e)
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
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 

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

All warnings (new ones prefixed by >>, old ones prefixed by <<):

>> arch/riscv/mm/init.c:383:6: warning: no previous prototype for function 'create_kernel_page_table' [-Wmissing-prototypes]
void create_kernel_page_table(pgd_t *pgdir, uintptr_t map_size)
^
arch/riscv/mm/init.c:383:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void create_kernel_page_table(pgd_t *pgdir, uintptr_t map_size)
^
static
1 warning generated.

vim +/create_kernel_page_table +383 arch/riscv/mm/init.c

   382	
 > 383	void create_kernel_page_table(pgd_t *pgdir, uintptr_t map_size)
   384	{
   385		uintptr_t va, end_va;
   386	
   387		end_va = kernel_virt_addr + load_sz;
   388		for (va = kernel_virt_addr; va < end_va; va += map_size)
   389			create_pgd_mapping(pgdir, va,
   390					   load_pa + (va - kernel_virt_addr),
   391					   map_size, PAGE_KERNEL_EXEC);
   392	}
   393	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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