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Re: [Qemu-devel] [PATCH] Save/load PC speaker internal state
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From: |
Juan Quintela |
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Subject: |
Re: [Qemu-devel] [PATCH] Save/load PC speaker internal state |
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Date: |
Tue, 28 Aug 2012 13:23:38 +0200 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.1 (gnu/linux) |
Andreas Färber <address@hidden> wrote:
> Am 27.08.2012 14:21, schrieb Pavel Dovgaluk:
>> Save PC speaker state to remove differences between system
>> states after saving the snapshot and after loading it again.
>> This patch is needed for deterministic replay of the execution.
>>
>
> What about pc-1.0 etc. machines? Does this need to be backported to
> stable branches first for migration from v1.2 to work? Or is such
> incoming excess data silently ignored? Or any compat magic required on top?
Is there a way to detect if we have ever used the speaker? Otherwise,
it is difficult to know if we should sent it or not.
Later, Juan.