On Fri, 23 Aug 2013, Jonghwan Choi wrote: > This patch looks like it should be in the 3.10-stable tree, should we apply > it? Yes, please. Sorry for the very late reply. > ------------------ > > 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> > --- > arch/arm/xen/enlighten.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c > index 13609e0..05db95d 100644 > --- a/arch/arm/xen/enlighten.c > +++ b/arch/arm/xen/enlighten.c > @@ -170,6 +170,7 @@ static void __init xen_percpu_init(void *unused) > per_cpu(xen_vcpu, cpu) = vcpup; > > enable_percpu_irq(xen_events_irq, 0); > + put_cpu(); > } > > static void xen_restart(char str, const char *cmd) > -- > 1.7. > -- 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