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Date: Mon, 21 Dec 2009 09:40:47 +0200
From: Gleb Natapov <gleb@redhat.com>
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Subject: [Qemu-devel] Re: [SeaBIOS] [PATCH 0/8] option rom loading overhaul.
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To: Anthony Liguori <anthony@codemonkey.ws>
Cc: Gerd Hoffmann <kraxel@redhat.com>, qemu-devel@nongnu.org

On Sun, Dec 20, 2009 at 11:48:20AM -0600, Anthony Liguori wrote:
> >system_reset _is_ hard shutdown/start-up. If it is not it is a bug, we
> >just arguing if the same applies for the case that migration was done
> >between boot and reset.
> 
> It's not and it will never be completely.
There are always bugs left. As long as we agree on what is right that is
OK.

>                                            By this logic, we should
> close the file descriptors for the block devices and try to reopen
> them.  It's certainly possible that someone does a mv of the block
> device and replaces it under the covers.
What is the analogue in real HW? BTW it is not a bad idea to get
notification when disk file has changed and issue "change device"
automatically.

> 
> Likewise, if a user upgrades the firmware independently of the qemu
> version, it would need to reread the firmware from disk each boot.
> 
That's the idea. Qemu should reread firmware from disk on each hard reset.

--
			Gleb.