[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH] ramfb: implement migration support
|
From: |
Gerd Hoffmann |
|
Subject: |
Re: [PATCH] ramfb: implement migration support |
|
Date: |
Fri, 29 Sep 2023 13:38:49 +0200 |
On Wed, Sep 20, 2023 at 12:26:51PM +0400, marcandre.lureau@redhat.com wrote:
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
>
> Implementing RAMFB migration seems quite straightforward. Unfortunately,
> current QEMU didn't block migration when RAMFB was used.
>
> Having an extra "ramfb" VMState doesn't seem to "break" migration
> forward compatibility. Surprisingly, missing sections are being ignored?
>
> Backward compatiblity however will have this extra error:
> qemu: Unknown savevm section or instance 'ramfb' 0. Make sure that your
> current VM setup matches your saved VM setup, including any hotplugged
> devices.
I guess that is only fixable by making old machine types bug-compatible,
i.e. register the ramfb vmstate only for qemu 8.2+ machine types.
Otherwise looks fine to me.
take care,
Gerd