[ppc64] 2.6.29-git7 : offlining a cpu causes an exception

Sachin Sant sachinp at in.ibm.com
Wed Apr 1 22:48:14 EST 2009

Sachin Sant wrote:
> Benjamin Herrenschmidt wrote:
>> On Tue, 2009-03-31 at 14:57 +0530, Sachin Sant wrote:
>>> While executing CPU HotPlug[1] tests i observed that during
>>> every cpu offline process an exception is thrown.
>> Looks like a BUG_ON() to me... can you look at what other
>> messages just before that ?  
Ben, seems like the following patch is causing the cpu hotplug
test failure. 

[PATCH 6/6] powerpc/mm: Introduce early_init_mmu() on 64-bit


If i back out this patch, i am able to offline/online cpu's
without any issue.



Sachin Sant
IBM Linux Technology Center
India Systems and Technology Labs
Bangalore, India

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