Re: [Xen-devel] Xen 4.4 development update: Feature freeze has started

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 15/11/13 14:48, Andrew Cooper wrote:
> On 15/11/13 14:36, George Dunlap wrote:
>> On 11/11/13 17:32, Andrew Cooper wrote:
>>> * HPET interrupt stack overflow (when using hpet_broadcast mode and MSI
>>> capable HPETs)
>>>    status: patches posted, undergoing review iteration.
>> Is this a bug?
>>
>>  -George
> Yes - it causes a double fault in debug builds of Xen.
>
> In non-debug builds, Xen will survive, but the underlying cause is that
> interrupts can erroneously stack with lower priority on top of higher
> priority.
>
> The patches have been Reviewed-by Tim, and are currently in XenServer
> trunk having a good trashing across all our hardware.

I actually meant "thrashing" here. 

("trashing" was v3 which had a bug on Nehalem/Westmere boxes which broke
1/3rd of our test lab.  XenRT was very unhappy with me for that)

~Andrew

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