Re: Lost IPIs during CPU Hotplug

2013-05-21 Thread Heiko Carstens
On Mon, May 20, 2013 at 02:37:43PM +0200, Heiko Carstens wrote: > I just got a dump from a system running a 3.0.something kernel, however I > think the problem exists with current kernels as well. > > Testcase was some I/O intense workload together with cpu hotplug stress. > > When trying to brin

Lost IPIs during CPU Hotplug

2013-05-20 Thread Heiko Carstens
I just got a dump from a system running a 3.0.something kernel, however I think the problem exists with current kernels as well. Testcase was some I/O intense workload together with cpu hotplug stress. When trying to bring a cpu online we got an endless loop on the cpu that issued the cpu_up and