Re: [PATCH v3 1/3] powerpc/spinlocks: Refactor SHARED_PROCESSOR

[Michael Ellerman <mpe@ellerman.id.au>]

kbuild test robot <lkp@intel.com> writes:
> Hi "Christopher,
>
> Thank you for the patch! Yet something to improve:
>
> [auto build test ERROR on linus/master]
> [cannot apply to v5.3-rc4 next-20190809]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>
> url:    https://github.com/0day-ci/linux/commits/Christopher-M-Riedl/Fix-oops-in-shared-processor-spinlocks/20190806-204502
> config: powerpc-powernv_defconfig (attached as .config)
> compiler: powerpc64le-linux-gcc (GCC) 7.4.0
> reproduce:
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         GCC_VERSION=7.4.0 make.cross ARCH=powerpc 
>
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <lkp@intel.com>
>
> All errors (new ones prefixed by >>):
>
>    In file included from include/linux/spinlock.h:89:0,
>                     from include/linux/seqlock.h:36,
>                     from include/linux/time.h:6,
>                     from include/linux/compat.h:10,
>                     from arch/powerpc/kernel/asm-offsets.c:14:
>    arch/powerpc/include/asm/spinlock.h: In function 'is_shared_processor':
>>> arch/powerpc/include/asm/spinlock.h:119:34: error: 'struct paca_struct' has no member named 'lppaca_ptr'; did you mean 'slb_cache_ptr'?
>       lppaca_shared_proc(local_paca->lppaca_ptr));
>                                      ^~~~~~~~~~
>                                      slb_cache_ptr
>    make[2]: *** [arch/powerpc/kernel/asm-offsets.s] Error 1
>    make[2]: Target '__build' not remade because of errors.
>    make[1]: *** [prepare0] Error 2
>    make[1]: Target 'prepare' not remade because of errors.
>    make: *** [sub-make] Error 2
>    7 real  4 user  3 sys  110.24% cpu 	make prepare
>
> vim +119 arch/powerpc/include/asm/spinlock.h
>
>    110	
>    111	static inline bool is_shared_processor(void)
>    112	{
>    113	/*
>    114	 * LPPACA is only available on BOOK3S so guard anything LPPACA related to
>    115	 * allow other platforms (which include this common header) to compile.
>    116	 */
>    117	#ifdef CONFIG_PPC_BOOK3S

I think you should use PPC_PSERIES here and that will fix it.

cheers

>    118		return (IS_ENABLED(CONFIG_PPC_SPLPAR) &&
>  > 119			lppaca_shared_proc(local_paca->lppaca_ptr));
>    120	#else
>    121		return false;
>    122	#endif
>    123	}
>    124	
>
> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
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