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Re: [Xen-devel] [PATCH] xen/arm: Panic when we receive an unexpected trap

On 06/18/2014 05:02 PM, Ian Campbell wrote:
> On Tue, 2014-06-17 at 21:44 +0100, Julien Grall wrote:
>> The current implementation of do_unexpected_trap make Xen spin forever
>> on the current physical CPU. This may lead to stall guests VCPU and print
>> unhelpful message (RCU stall...).
>> Usually when Xen receives an unexpected trap, it means that something goes
>> wrong either in the hypervisor or in the CPU. In this case we should
>> directly panic to also stop the other CPUs.
>> Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>
> Ack + applied.

Thanks, I think this patch is a good candidate for backporting on Xen 4.4

It will avoid Xen to try to continue running when an unexpected trap occurs.


Julien Grall

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