On Tue, 2011-11-08 at 14:37 -0800, Geoff Levand wrote: > Fixes the PS3 bootup hang introduced in 3.0-rc1 by: > > commit 317f394160e9beb97d19a84c39b7e5eb3d7815a > sched: Move the second half of ttwu() to the remote cpu > > Move the PS3's LV1 EOI call lv1_end_of_interrupt_ext() from ps3_chip_eoi() > to ps3_get_irq() for IPI messages. > > If lv1_send_event_locally() is called between a previous call to > lv1_send_event_locally() and the coresponding call to > lv1_end_of_interrupt_ext() the second event will not be delivered to the > target cpu. > > The PS3's SMP IPIs are implemented using lv1_send_event_locally(), so if two > IPI messages of the same type are sent to the same target in a relatively > short period of time the second IPI event can become lost when > lv1_end_of_interrupt_ext() is called from ps3_chip_eoi().
Ah glad you found it! I'm not going to ack it since PPC guts are way beyond me. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
