Re: [Qemu-devel] [PULL] qemu-sparc update

[Alexander Graf <agraf@suse.de>]

On 08.03.15 06:57, Mark Cave-Ayland wrote:
> On 08/03/15 10:31, Peter Maydell wrote:
> 
>> On 8 March 2015 at 19:04, Mark Cave-Ayland
>> <mark.cave-ayland@ilande.co.uk> wrote:
>>> On 08/03/15 09:47, Peter Maydell wrote:
>>>
>>>> On 4 March 2015 at 15:20, Mark Cave-Ayland
>>>> <mark.cave-ayland@ilande.co.uk> wrote:
>>>>> Hi Peter,
>>>>>
>>>>> Here are the updates from my qemu-sparc tree. Please pull.
>>>>
>>>>>  MAINTAINERS               |    3 +
>>>>>  hw/ppc/ppc.c              |  161 --------------------
>>>>>  hw/ppc/ppc405_boards.c    |    2 +-
>>>>>  hw/ppc/prep.c             |  163 ++++++++++++++++++--
>>>>>  hw/sparc/sun4m.c          |   10 +-
>>>>>  hw/sparc64/sun4u.c        |   20 ++-
>>>>>  hw/timer/m48t59.c         |  359 ++++++++++++++++++++++++++++++++-------------
>>>>>  include/hw/timer/m48t59.h |   61 ++++----
>>>>>  pc-bios/openbios-sparc64  |  Bin 1616768 -> 1616768 bytes
>>>>>  qemu-doc.texi             |    7 +-
>>>>
>>>> Shouldn't there be an update to roms/openbios to go with the
>>>> pc-bios/openbios-sparc64 binary blob update?
>>>
>>> I haven't committed the sun4u MMIO patches to OpenBIOS yet because
>>> without the corresponding QEMU parts OpenBIOS SVN trunk breaks (and the
>>> QEMU parts have taken many weeks to get right which is a long time to
>>> leave things broken). Hence I've gone for just updating the binary which
>>> is SVN trunk plus the NVRAM MMIO accessor changes in order to preserve
>>> bisection.
>>>
>>> As soon as this is applied, I can apply my remaining OpenBIOS patches
>>> and then send a separate qemu-openbios pull request which will bring
>>> everything up to date.
>>
>> Hmm. I'm not a huge fan of having the binary in git and the submodule
>> reference be out of step...
> 
> Alternatively if you have shell access to git.qemu.org then I can commit
> just the MMIO accessor changes to SVN trunk now and then with a manual
> update to the OpenBIOS git mirror I can re-send the signed pull request
> with updated binaries? I've deliberately held off applying patches to
> OpenBIOS SVN trunk in case this was the preferred method as I'm keen to
> be able to bisect down to this particular change on SPARC64.

Is there any way to make the change backwards compatible, so that we
don't need to sync versions?


Alex