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From: Pranith Kumar <bobby.prani@gmail.com>
Date: Fri, 21 Apr 2017 15:15:56 -0400
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Subject: Re: [Qemu-devel] [Bug 1653063] [NEW] qemu-system-arm hangs with
 -icount and -nodefaults
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To: Andrew Jones <drjones@redhat.com>
Cc: Hansni Bu <1653063@bugs.launchpad.net>, =?UTF-8?B?QWxleCBCZW5uw6ll?= <alex.bennee@linaro.org>, qemu-devel <qemu-devel@nongnu.org>

On Thu, Dec 29, 2016 at 5:04 AM, Andrew Jones <drjones@redhat.com> wrote:
> On Thu, Dec 29, 2016 at 08:02:16AM -0000, Hansni Bu wrote:
>> Public bug reported:
> ...
>> https://bugs.launchpad.net/bugs/1653063
> ...
>>   After console prints the message below:
>>   "Uncompressing Linux..................................................=
........................ done, booting the kernel."
>>   there's no further action noticed.
>>
>>   If "-icount" is not set, namely run as:
>>   qemu-system-arm -M integratorcp -kernel arm-test/zImage.integrator -in=
itrd arm-test/arm_root.img -nographic -nodefaults -chardev stdio,mux=3Don,i=
d=3Dchar0 -serial chardev:char0 --append "console=3DttyAMA0"
>>
>>   or if "-nodefaults" is not set, namely run as:
>>   qemu-system-arm -M integratorcp -kernel arm-test/zImage.integrator -in=
itrd arm-test/arm_root.img -nographic -icount 1 --append "console=3DttyAMA0=
"
>>
>>   The Linux boot procedure can finish successfully.
>
> Hi Hansni,
>
> The fact things work when you remove -nodefaults is a sign that with it
> your single cpu may just not be getting scheduled again. Does the patch
> from Alex Benn=C3=A9e here[*] help?
>
> [*] https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg01743.html
>

This bug is still reproducible with the latest git.

--
Pranith

--=20
Pranith