1. 2013-04-29 Re: [PATCH] powerpc: Fix missing doorbell IPIs during linuxppc- Greg KH 2. 2013-04-29 Re: [PATCH] powerpc: Fix missing doorbell IPIs during linuxppc- Benjamin Herrensch 3. 2013-04-29 [PATCH] powerpc: Fix missing doorbell IPIs during nap linuxppc- Ian Munsie