Re: [kbuild-all] Re: drivers/firmware/efi/libstub/zboot.c:163:1: sparse: sparse: symbol 'efi_zboot_entry' was not declared. Should it be static?

["Chen, Rong A" <rong.a.chen@intel.com>]

On 10/19/2022 5:11 PM, Ard Biesheuvel wrote:
> On Wed, 19 Oct 2022 at 11:10, Chen, Rong A <rong.a.chen@intel.com> wrote:
>>
>>
>>
>> On 10/19/2022 3:50 AM, Ard Biesheuvel wrote:
>>> This is another spurious report of an asmlinkage symbol.
>>
>> Hi Ard,
>>
>> Thanks for your reply, we'll add this warning to the ignore list.
>>
> 
> Thank you Rong.
> 
> Wouldn't it be easier to detect the asmlinkage and never warn on it?

Hi Ard,

We'll try to search asmlinkage from code if the sparse warning occurred.

Best Regards,
Rong Chen

> Maybe this should be sparse's job instead ...
> 
> 
>>
>>>
>>> On Tue, 18 Oct 2022 at 21:49, kernel test robot <lkp@intel.com> wrote:
>>>>
>>>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>>>> head:   bb1a1146467ad812bb65440696df0782e2bc63c8
>>>> commit: a050910972bb25152b42ad2e544652117c5ad915 efi/libstub: implement generic EFI zboot
>>>> date:   4 weeks ago
>>>> config: riscv-randconfig-s043-20221018
>>>> compiler: riscv64-linux-gcc (GCC) 12.1.0
>>>> 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: v0.6.4-39-gce1a6720-dirty
>>>>           # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a050910972bb25152b42ad2e544652117c5ad915
>>>>           git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>>>>           git fetch --no-tags linus master
>>>>           git checkout a050910972bb25152b42ad2e544652117c5ad915
>>>>           # save the config file
>>>>           mkdir build_dir && cp config build_dir/.config
>>>>           COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=riscv SHELL=/bin/bash drivers/firmware/efi/libstub/ lib/xz/
>>>>
>>>> If you fix the issue, kindly add following tag where applicable
>>>> | Reported-by: kernel test robot <lkp@intel.com>
>>>>
>>>> sparse warnings: (new ones prefixed by >>)
>>>>      WARNING: invalid argument to '-march': '_zihintpause'
>>>>      drivers/firmware/efi/libstub/zboot.c: note: in included file (through drivers/firmware/efi/libstub/../../../../lib/decompress_unxz.c):
>>>>>> drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:393:28: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected restricted __le32 const [usertype] *p @@     got unsigned int const [usertype] * @@
>>>>      drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:393:28: sparse:     expected restricted __le32 const [usertype] *p
>>>>      drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:393:28: sparse:     got unsigned int const [usertype] *
>>>>      drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:427:48: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected restricted __le32 const [usertype] *p @@     got unsigned int const [usertype] * @@
>>>>      drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:427:48: sparse:     expected restricted __le32 const [usertype] *p
>>>>      drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:427:48: sparse:     got unsigned int const [usertype] *
>>>>      drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:435:37: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected restricted __le32 const [usertype] *p @@     got unsigned int const [usertype] * @@
>>>>      drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:435:37: sparse:     expected restricted __le32 const [usertype] *p
>>>>      drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:435:37: sparse:     got unsigned int const [usertype] *
>>>>      drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:459:28: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected restricted __le32 const [usertype] *p @@     got unsigned int const [usertype] * @@
>>>>      drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:459:28: sparse:     expected restricted __le32 const [usertype] *p
>>>>      drivers/firmware/efi/libstub/../../../../lib/xz/xz_dec_stream.c:459:28: sparse:     got unsigned int const [usertype] *
>>>>>> drivers/firmware/efi/libstub/zboot.c:163:1: sparse: sparse: symbol 'efi_zboot_entry' was not declared. Should it be static?
>>>>
>>>> vim +/efi_zboot_entry +163 drivers/firmware/efi/libstub/zboot.c
>>>>
>>>>      161
>>>>      162  asmlinkage efi_status_t __efiapi
>>>>    > 163  efi_zboot_entry(efi_handle_t handle, efi_system_table_t *systab)
>>>>
>>>> --
>>>> 0-DAY CI Kernel Test Service
>>>> https://01.org/lkp
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