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xen-devel
Re: [Xen-devel] Repositories and build system
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To: |
Brendan Cully <brendan@xxxxxxxxx>, Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx> |
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Subject: |
Re: [Xen-devel] Repositories and build system |
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From: |
Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
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Date: |
Thu, 07 May 2009 19:17:09 +0100 |
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Cc: |
Yuji Shimada <shimada-yxb@xxxxxxxxxxxxxxx>, Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>, Xen Developers <xen-devel@xxxxxxxxxxxxxxxxxxx>, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>, "Zhai, Edwin" <edwin.zhai@xxxxxxxxx> |
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Thu, 07 May 2009 11:17:43 -0700 |
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[Xen-devel] Repositories and build system |
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On 07/05/2009 18:00, "Brendan Cully" <brendan@xxxxxxxxx> wrote:
>> I agree.
>> In fact I think we should start to write in clear letters when a commit
>> breaks xen\qemu compatibility, specifying the required changeset in the
>> other repository.
>> We could formally introduce this practice with the 3.5 development cycle.
>
> This would certainly be an improvement, but it depends on the
> developer always knowing and recording exactly what synchronization is
> needed. This doesn't quite jibe with bisect, whose raison d'etre is to
> help find problems that went unnoticed for potentially long periods of
> time. Even when the hints work, bisection is still quite painful
> across two repositories in two different version control systems.
We plan to turn on the QEMU_TAG mechanism always after 3.4 is branched, so
that by default xen-unstable.hg will always clone a specific version of the
qemu git repository. I'm sure it should be then be possible to make bisect
update the foreign qemu repo as it goes quite straightforwardly.
-- Keir
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