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]

On 10/19/2022 5:11 PM, Ard Biesheuvel wrote:
> On Wed, 19 Oct 2022 at 11:10, Chen, Rong A <rong.a.chen@xxxxxxxxx> 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@xxxxxxxxx> 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@xxxxxxxxx>
> > > >
> > > > 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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