[PATCH 1/2] powerpc: Don't enable FP/Altivec if not checkpointed

[Fengguang Wu]

You are welcome! :)

On Thu, Nov 02, 2017 at 01:44:07PM +1100, Cyril Bur wrote:
>On Thu, 2017-11-02 at 10:19 +0800, kbuild test robot wrote:
>> Hi Cyril,
>>
>> Thank you for the patch! Yet something to improve:
>>
>
>Once again robot, you have done brilliantly! You're 100% correct and
>the last thing I want to do is break the build with
>CONFIG_PPC_TRANSACTIONAL_MEM turned off.
>
>Life saver,
>Thanks so much kbuild.
>
>Cyril
>
>> [auto build test ERROR on powerpc/next]
>> [also build test ERROR on v4.14-rc7 next-20171018]
>> [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/Cyril-Bur/powerpc-Don-t-enable-FP-Altivec-if-not-checkpointed/20171102-073816
>> base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
>> config: powerpc-asp8347_defconfig (attached as .config)
>> compiler: powerpc-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
>> 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
>>         make.cross ARCH=powerpc
>>
>> All errors (new ones prefixed by >>):
>>
>>    arch/powerpc/kernel/process.c: In function 'is_transactionally_fp':
>> > > arch/powerpc/kernel/process.c:243:15: error: 'struct thread_struct' has no member named 'ckpt_regs'
>>
>>       (tsk->thread.ckpt_regs.msr & MSR_FP);
>>                   ^
>>    arch/powerpc/kernel/process.c:244:1: error: control reaches end of non-void function [-Werror=return-type]
>>     }
>>     ^
>>    cc1: all warnings being treated as errors
>>
>> vim +243 arch/powerpc/kernel/process.c
>>
>>    239	
>>    240	static int is_transactionally_fp(struct task_struct *tsk)
>>    241	{
>>    242		return msr_tm_active(tsk->thread.regs->msr) &&
>>  > 243			(tsk->thread.ckpt_regs.msr & MSR_FP);
>>    244	}
>>    245	
>>
>> ---
>> 0-DAY kernel test infrastructure                Open Source Technology Center
>> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
>