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Re: [Qemu-devel] Virtual Machine Generation ID

From: Michael S. Tsirkin
Subject: Re: [Qemu-devel] Virtual Machine Generation ID
Date: Tue, 17 Jan 2017 19:45:32 +0200

On Mon, Jan 16, 2017 at 10:57:42AM -0800, Ben Warren wrote:
> I think we have a misunderstanding here.  I’m storing the VM
> Generation ID __data__ (a GUID) in a fw_cfg blob, not the address.

Yes, I think I gathered this much from the discussion. This is what
I'm saying - don't. Have guest loader reserve guest memory and write the
address into a fw cfg blob, and have qemu write the id at that address.
This way you can update guest memory at any time.


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