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RE: [Xen-devel] differences in hvm save/restore in 3.1 vs 3.2

To: "Christopher Head" <chead@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] differences in hvm save/restore in 3.1 vs 3.2
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Fri, 4 Jul 2008 17:03:39 +1000
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Thread-topic: [Xen-devel] differences in hvm save/restore in 3.1 vs 3.2
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> There's a bug in the serial port emulation in qemu related to saving
and
> restoring. There's a patch floating around somewhere which fixes it,
but
> depending on what source tree you're using you may not have it yet.
One
> of the critical registers isn't saved and also isn't regenerated at
> restore time, meaning that serial port interrupts stop getting
delivered
> to the guest properly.
> 

That sounds like the sort of problem I'm seeing. It's obviously a
regression though as it was working in 3.1.

I'm using the Debian provided 3.2 packages but can easily apply a patch
if I can find it... I'll go searching tonight.

Thanks

James

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