offlining cpus breakage

Preeti U Murthy preeti at linux.vnet.ibm.com
Fri Jan 16 19:56:08 AEDT 2015


On 01/16/2015 08:34 AM, Michael Ellerman wrote:
> On Fri, 2015-01-16 at 13:28 +1300, Alexey Kardashevskiy wrote:
>> On 01/16/2015 02:22 AM, Preeti U Murthy wrote:
>>> Hi Alexey,
>>>
>>> Can you let me know if the following patch fixes the issue for you ?
>>> It did for us on one of our machines that we were investigating on.
>>
>> This fixes the issue for me as well, thanks!
>>
>> Tested-by: Alexey Kardashevskiy <aik at ozlabs.ru>	
> 
> OK, that's great.
> 
> But, I really don't think we can ask upstream to merge this patch to generic
> code when we don't have a good explanation for why it's necessary. At least I'm
> not going to ask anyone to do that :)
> 
> So Pretti can you either write a 100% convincing explanation of why this patch
> is correct in the general case, or (preferably) do some more investigating to
> work out what Alexey's bug actually is.

Yes will do so. Its better to investigate where precisely is the bug.
This patch helped me narrow down on the buggy scenario.

Regards
Preeti U Murthy
> 
> cheers
> 
> 
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