Comment 9 for bug 1805256
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| Rafael David Tinoco (rafaeldtinoco) wrote Re: qemu-img hangs on high core count ARM system | #9 |
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0e1f616
(Get the code!)
Hello Liz,
I'll try to reproduce this issue in a Cortex-A53 aarch64 real environment (w/ 24 HW threads) AND in a virtual environment w/ lots of vCPUs... but, if it's a barrier missing - or the lack of atomicity and/or ordering in a primitive - then, I'm afraid the context switch in between vCPUs might not be the same as in real CPUs (IPIs are sent and handled differently and host kernel delays IPI delivery because of its own callbacks, before scheduling, etc...) and I could need a qemu dump from your environment.
Would that be feasible ? Can you reproduce this nowadays ? This bug has aged a little, so I'm now sure!
Could you provide me the dump caused by latest package available for your Ubuntu version ? This way I have the debug symbols to work with.
Meanwhile, I'll be trying to reproduce on my side.