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From: Laurent Vivier <laurent@vivier.eu>
Message-ID: <1de8bd28-869b-49af-e877-6b8802d582b5@vivier.eu>
Date: Fri, 29 Jun 2018 17:52:38 +0200
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Subject: Re: [Qemu-devel] [PULL 23/32] tcg: Support MMU protection regions
 smaller than TARGET_PAGE_SIZE
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To: Peter Maydell <peter.maydell@linaro.org>
Cc: QEMU Developers <qemu-devel@nongnu.org>

Le 29/06/2018 à 17:28, Peter Maydell a écrit :
> On 28 June 2018 at 23:26, Laurent Vivier <laurent@vivier.eu> wrote:
>> Le 28/06/2018 à 22:05, Peter Maydell a écrit :
>>> Do you have a repro case (images, command line) that I can
>>> use to investigate ?
>> - checkout the branch q800-dev-part1 from
>>   git://github.com/vivier/qemu-m68k.git
>>
>> - configure and build
>>
>>  './configure' '--target-list=m68k-softmmu' '--enable-debug' \
>>                '--enable-debug-tcg' '--enable-debug-info'
>>
>>   my gcc is from Fedora 27, version 7.3.1 20180303 (Red Hat 7.3.1-5)
>>
>> - get the kernel from the debian installer:
>>
>> wget
>> https://cdimage.debian.org/mirror/cdimage/ports/9.0/m68k/iso-cd/debian-9.0-m68k-NETINST-1.iso
>>
>> guestfish --add debian-9.0-m68k-NETINST-1.iso --ro \
>>           --mount /dev/sda:/ <<_EOF_
>> copy-out /install/kernels/vmlinux-4.15.0-2-m68k .
>> _EOF_
>>
>> - and run
>>
>> ./m68k-softmmu/qemu-system-m68k -M q800 \
>>     -serial none -serial mon:stdio \
>>     -kernel vmlinux-4.15.0-2-m68k \
>>     -nographic
> 
> What is this testcase supposed to print when it works?
> I tried reverting 55df6fcf5476b44bc1b9, but that just prints
> "ABCFGHIJK" and then nothing else.

At this point, you can either remove the -nographic or add -append
"console=ttyS0 vga=off" to have the kernel boot logs.

If you want to have started an userspace command, add the initrd from
the CD:

guestfish --add debian-9.0-m68k-NETINST-1.iso --ro \
          --mount /dev/sda:/ <<_EOF_
copy-out /install/cdrom/initrd.gz .
_EOF_

Thanks,
Laurent