Re: [RFC PATCH v4 03/27] x86/fpu/xstate: Enable XSAVES system states

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On Tue, 2018-09-25 at 19:03 +0200, Peter Zijlstra wrote:
> On Fri, Sep 21, 2018 at 08:03:27AM -0700, Yu-cheng Yu wrote:
> > diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
> > index 4bd56079048f..9f51b0e1da25 100644
> > --- a/arch/x86/kernel/fpu/core.c
> > +++ b/arch/x86/kernel/fpu/core.c
> > @@ -365,8 +365,13 @@ void fpu__drop(struct fpu *fpu)
> >   */
> >  static inline void copy_init_user_fpstate_to_fpregs(void)
> >  {
> > +	/*
> > +	 * Only XSAVES user states are copied.
> > +	 * System states are preserved.
> > +	 */
> >  	if (use_xsave())
> > -		copy_kernel_to_xregs(&init_fpstate.xsave, -1);
> > +		copy_kernel_to_xregs(&init_fpstate.xsave,
> > +				     xfeatures_mask_user);
> 
> By my counting, that doesn't qualify for a line-break, it hits 80.
> 
> If you were to do this line-break, coding style would have you liberally
> sprinkle {} around.

Ok, will fix it.




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