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SubjectRe: [PATCH 6/6] x86: Exit RCU extended QS on notify resume
On Fri, Jul 06, 2012 at 01:43:29PM -0700, Josh Triplett wrote:
> On Fri, Jul 06, 2012 at 09:33:38AM -0700, Paul E. McKenney wrote:
> > On Fri, Jul 06, 2012 at 02:00:18PM +0200, Frederic Weisbecker wrote:
> > > --- a/arch/x86/Kconfig
> > > +++ b/arch/x86/Kconfig
> > > @@ -95,6 +95,7 @@ config X86
> > > select KTIME_SCALAR if X86_32
> > > select GENERIC_STRNCPY_FROM_USER
> > > select GENERIC_STRNLEN_USER
> > > + select HAVE_RCU_USER_QS if X86_64
> >
> > And I will bite yet again. Why only 64-bit kernels?
>
> Because HAVE_RCU_USER_QS requires an architecture-specific component,
> and this patch series only added the necessary bits to entry_64.S.

OK, please allow me to rephrase the question. Why only entry_64.S? ;-)

Thanx, Paul



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