Re: [PATCH] x86/hyper-v: micro-optimize send_ipi_one case

[Thomas Gleixner <tglx@xxxxxxxxxxxxx>]

On Thu, 24 Oct 2019, Roman Kagan wrote:
> > +
> > +	if (cpu >= 64)
> > +		goto do_ex_hypercall;
> > +
> > +	ret = hv_do_fast_hypercall16(HVCALL_SEND_IPI, vector,
> > +				     BIT_ULL(hv_cpu_number_to_vp_number(cpu)));
> > +	return ((ret == 0) ? true : false);
> 
> D'oh.  Isn't "return ret == 0;" or just "return ret;" good enough?

   'return ret == 0' != 'return ret'

!ret perhaps :)

Thanks,

	tglx