Hi Paul, Sorry for the late response here. I am now trying to actually use this series. On 2022-09-29, "Paul E. McKenney" <paulmck@xxxxxxxxxx> wrote: > diff --git a/kernel/rcu/Kconfig b/kernel/rcu/Kconfig > index d471d22a5e21..f53ad63b2bc6 100644 > --- a/kernel/rcu/Kconfig > +++ b/kernel/rcu/Kconfig > @@ -72,6 +72,9 @@ config TREE_SRCU > help > This option selects the full-fledged version of SRCU. > You are missing a: +config ARCH_HAS_NMI_SAFE_THIS_CPU_OPS + bool + Otherwise there is no CONFIG_ARCH_HAS_NMI_SAFE_THIS_CPU_OPS, so for example CONFIG_NEED_SRCU_NMI_SAFE always ends up with y on X86. > +config NEED_SRCU_NMI_SAFE > + def_bool HAVE_NMI && !ARCH_HAS_NMI_SAFE_THIS_CPU_OPS && !TINY_SRCU > + John