On 12/02/2015 05:57 PM, Burton, Ross wrote:
>
> On 2 December 2015 at 09:51, Hongxu Jia <hongxu.jia@windriver.com 
> <mailto:hongxu.jia@windriver.com>> wrote:
>
>     The root cause is the qemu didn't support gcc optimization level 3
>     very well.
>
>
> Oh, so the problem only appears in qemu if you enable tuning that is 
> known to be broken in qemu?

Yes, since I tested qemux86/qemux86-64 with default tune, and everything 
is ok.

> I don't think we should apply the Python workaround to oe-core as 
> everyone will suffer for a configuration that is known to be broken 
> (and isn't enabled in oe-core).

Trace the issue costs a lot of time,  the original failure was invoking
'smart update' in qemu, and found out the python md5/sha checksum
output incorrect, and then found out qemu86-64 with corei7-64 did
not support gcc optimization level 3 '-O3' very well [YOCTO #8748]

BTW, boot the same image with virtualbox, everything is ok

//Hongxu

>
> Ross