From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wei Huang <w1.huang@samsung.com>
Subject: Re: The segmentfault when using xl create domU
Date: Wed, 16 Apr 2014 10:50:50 -0500
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To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: "Stefano Stabellini (Xen mainlister)" <stefano.stabellini@eu.citrix.com>, duqi <duqi_2009@163.com>, Julien Grall <julien.grall@linaro.org>, =?UTF-8?B?5a6r5pmT5Yip?= <nkgongxl@163.com>, hdegoede <hdegoede@redhat.com>, "bjzhang@suse.com" <bjzhang@suse.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
List-Id: xen-devel@lists.xenproject.org

On 04/16/2014 04:21 AM, Ian Campbell wrote:
> On Tue, 2014-04-15 at 17:07 -0500, Wei Huang wrote:
>>> It's a compiler bug. For some reasons gcc doesn't generate the right assembly
>>> when -O1 is specified on the command line. Which version of gcc do you use(4.7.*?)?
>>> Which distribution are you using?
>>> Can you also call disas the crash and copy the output?
>>>
>>> Gcc 4.8 doesn't seem to be affected.
>>>
>>> FYI, I got this output from 4.7 with Linaro Ubuntu raring (gcc 4.7.3).
>>> [...]
>> I saw the same thing on my system and ack'ed that this is compiler
>> related. My compiler is 4.7.3. I was able to fix it with the following hack:
>
> Are you also using the Linaro compiler by any chance?
I think so. Here is the GCC --version info:
arm-linux-gnueabihf-gcc (Ubuntu/Linaro 4.7.3-1ubuntu1) 4.7.3

>
> I've added warnings to
> http://wiki.xen.org/wiki/Xen_ARM_with_Virtualization_Extensions/CrossCompiling
> and
> http://wiki.xen.org/wiki/Xen_ARM_with_Virtualization_Extensions#Building_Xen_on_ARM
>
>