3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Julien Grall <julien.grall@xxxxxxxxxx> commit 0d7febe58413884f6428143221971618fbf3a47d upstream. When CONFIG_PREEMPT is enabled, Linux will not be able to boot and warn: [ 4.127825] ------------[ cut here ]------------ [ 4.133376] WARNING: at init/main.c:699 do_one_initcall+0x150/0x158() [ 4.140738] initcall xen_init_events+0x0/0x10c returned with preemption imbalance This is because xen_percpu_init uses get_cpu but doesn't have the corresponding put_cpu. Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> Signed-off-by: Jonghwan Choi <jhbird.choi@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arm/xen/enlighten.c | 1 + 1 file changed, 1 insertion(+) --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -170,6 +170,7 @@ static void __init xen_percpu_init(void per_cpu(xen_vcpu, cpu) = vcpup; enable_percpu_irq(xen_events_irq, 0); + put_cpu(); } static void xen_restart(char str, const char *cmd) -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html