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Re: [Qemu-devel] [PATCH v2] ahci: add -drive support

From: Gerd Hoffmann
Subject: Re: [Qemu-devel] [PATCH v2] ahci: add -drive support
Date: Mon, 09 Jul 2012 12:14:51 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.5) Gecko/20120601 Thunderbird/10.0.5


>> If -hda has the semantics of "create an IDE device", then no, we can't 
>> change it. It doesn't however. IIRC on -M pseries -hda creates SCSI devices. 
>> On s390 -hda creates virtio devices. So if on -M q35 -hda would create 
>> if=ahci, I don't see how that breaks the CLI.
> It doesn't per se, that is as long as you need to explicitly specify -M
> q35. But then changing the default machine from the existing pc to q35
> would break the command line.

That will happen _anyway_.  No doubt there will be configurations which
work with -M pc and break with -M q35.


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