Hi Paul, After merging the rcu tree, today's linux-next build (powerpc64 allnoconfig) failed like this: In file included from arch/powerpc/include/asm/kvm_ppc.h:30:0, from arch/powerpc/kernel/setup_64.c:68: include/linux/kvm_host.h:366:21: error: field 'srcu' has incomplete type struct srcu_struct srcu; ^ include/linux/kvm_host.h:367:21: error: field 'irq_srcu' has incomplete type struct srcu_struct irq_srcu; ^ I am sure we have seen this before :-( Caused by commit 31a78b1b598a ("srcu: Isolate srcu sections using CONFIG_SRCU") as it was before (I do wonder why this came back). I have reverted that commit for today. -- Cheers, Stephen Rothwell sfr@canb.auug.org.au