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

[Cyril Bur]

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	
> 
> ---
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