Hi Paul, After merging the rcu tree, today's linux-next build (x86_64 allmodconfig) failed like this: arch/x86/xen/smp.c: In function 'xen_cpu_up': arch/x86/xen/smp.c:460:6: error: 'err' undeclared (first use in this function) if (err) ^ Caused by commit b92c23b083d6 ("x86: Use common outgoing-CPU-notification code"). I have used the rcu tree from next-20150226 for today. -- Cheers, Stephen Rothwell sfr@canb.auug.org.au