<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Dec 2, 2015, at 2:28 AM, Hongxu Jia <<a href="mailto:hongxu.jia@windriver.com" class="">hongxu.jia@windriver.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<div class="moz-cite-prefix">On 12/02/2015 05:57 PM, Burton, Ross
wrote:<br class="">
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<blockquote cite="mid:CAJTo0Lag5J+cytX8C+Z7b8dmX65MZWJBV6JXQt=Ocwy==szenA@mail.gmail.com" type="cite" class="">
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<div class="gmail_quote">On 2 December 2015 at 09:51, Hongxu
Jia <span dir="ltr" class=""><<a moz-do-not-send="true" href="mailto:hongxu.jia@windriver.com" target="_blank" class="">hongxu.jia@windriver.com</a>></span>
wrote:<br class="">
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<div bgcolor="#FFFFFF" text="#000000" class="">The root cause is
the qemu didn't support gcc optimization level 3 very
well.<br class="">
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Oh, so the problem only appears in qemu if you enable tuning
that is known to be broken in qemu? </div>
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Yes, since I tested qemux86/qemux86-64 with default tune, and
everything is ok.<br class="">
<br class="">
<blockquote cite="mid:CAJTo0Lag5J+cytX8C+Z7b8dmX65MZWJBV6JXQt=Ocwy==szenA@mail.gmail.com" type="cite" class="">
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<div class="gmail_extra">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).</div>
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<br class="">
Trace the issue costs a lot of time, the original failure was
invoking<br class="">
'smart update' in qemu, and found out the python md5/sha checksum<br class="">
output incorrect, and then found out qemu86-64 with corei7-64 did<br class="">
not support gcc optimization level 3 '-O3' very well
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[YOCTO #8748]<br class="">
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BTW, boot the same image with virtualbox, everything is ok<br class="">
<br class=""></div></div></blockquote><div><br class=""></div><div>This is a Qemu bug, So it should be persued in that direction. Secondly, this patch should be applied only</div><div>for emulator BSPs and not across the board</div><br class=""><blockquote type="cite" class=""><div class=""><div bgcolor="#FFFFFF" text="#000000" class="">
//Hongxu<br class="">
<br class="">
<blockquote cite="mid:CAJTo0Lag5J+cytX8C+Z7b8dmX65MZWJBV6JXQt=Ocwy==szenA@mail.gmail.com" type="cite" class="">
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<div class="gmail_extra">Ross</div>
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