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Re: [Xen-devel] [Qemu-devel] [PATCH V2 5/5] vga-cirrus: Workaround during restore when using Xen.

On 6 January 2012 13:30, Jan Kiszka <jan.kiszka@xxxxxx> wrote:
> The third point indicates that there is rather more generic room for
> improvements: Why should qemu reset device models before restore at all?

Commit 5a8a49d7aa says:
# if we load from a snapshot, the machine can be in any state. That can
# cause troubles if loading an older image which does not carry all state
# information the executing QEMU requires. Hardly any device takes care of
# this scenario.

I think it's also easier to reason about devices if you know that the
device before a load was in a known clean state rather than being
anything at all.

-- PMM

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