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Re: [Qemu-ppc] [PATCH 1/8] spapr-iommu: add a bus for spapr-iommu device

From: Andreas Färber
Subject: Re: [Qemu-ppc] [PATCH 1/8] spapr-iommu: add a bus for spapr-iommu devices
Date: Thu, 10 Apr 2014 16:52:57 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.3.0

Am 10.04.2014 16:40, schrieb Alexey Kardashevskiy:
> On 04/10/2014 10:40 PM, Alexander Graf wrote:
>> Juan, is a different command line device order supposed to work with
>> migration?
> We discussed this on IRC with Paolo and the conclusion is that yes, the
> order should not matter.

Huh?! If you ever tried changing the order of PCI devices such as
virtio-blk-pci on the command line (or changing between if=virtio and
-device virtio-blk-pci) then surely it does change the order of the
/dev/vdX the guest sees and will be migration-incompatible. The order of
-drive and -device however, for instance, does not seem to matter. But
in this generality, your statement does not seem to reflect current reality.


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