[arm64:for-next/kexec 4/12] arch/arm64/kernel/hibernate.c:181:39: sparse: sparse: cast to restricted gfp_t

[Will Deacon]

On Fri, Jan 29, 2021 at 04:34:13PM -0500, Pavel Tatashin wrote:
> On Fri, Jan 29, 2021 at 8:34 AM kernel test robot <lkp at intel.com> wrote:
> >
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/kexec
> > head:   a360190e8a42d47ea80355f286939ba82b02405a
> > commit: 50f53fb721817a6efa541cca24f1b7caa84801c1 [4/12] arm64: trans_pgd: make trans_pgd_map_page generic
> > config: arm64-randconfig-s031-20210129 (attached as .config)
> > compiler: aarch64-linux-gcc (GCC) 9.3.0
> > 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: v0.6.3-215-g0fb77bb6-dirty
> >         # https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/commit/?id=50f53fb721817a6efa541cca24f1b7caa84801c1
> >         git remote add arm64 https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git
> >         git fetch --no-tags arm64 for-next/kexec
> >         git checkout 50f53fb721817a6efa541cca24f1b7caa84801c1
> >         # save the attached .config to linux build tree
> >         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm64
> >
> > If you fix the issue, kindly add following tag as appropriate
> > Reported-by: kernel test robot <lkp at intel.com>
> >
> >
> > "sparse warnings: (new ones prefixed by >>)"
> > >> arch/arm64/kernel/hibernate.c:181:39: sparse: sparse: cast to restricted gfp_t
> > >> arch/arm64/kernel/hibernate.c:202:44: sparse: sparse: cast from restricted gfp_t
> 
> __force attribute is needed in order to fix these warnings from
> sparse. Do you want me to send you an updated version of
> 
> "arm64: trans_pgd: make trans_pgd_map_page generic" ?

Please send patches on top of for-next/kexec, as I've already queued the
patch above.

That said, why not change 'struct trans_pgd_info' to use the correct types,
instead of 'void *'?

Will