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

From: Markus Armbruster
Subject: Re: [Qemu-devel] [PATCH v2] ahci: add -drive support
Date: Mon, 09 Jul 2012 13:06:47 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux)

Kevin Wolf <address@hidden> writes:

> Am 09.07.2012 10:50, schrieb Markus Armbruster:
>> Alexander Graf <address@hidden> writes:
>>> We've had support for creating AHCI devices using -device for a while now,
>>> but it's cumbersome to users. We really should provide an easier way for
>>> them to leverage the power of AHCI!
>>> So let's introduce a new if= option to -drive, giving users the same
>>> command line experience as for scsi or ide.
>>> Signed-off-by: Alexander Graf <address@hidden>
>>> ---
>>> v1 -> v2:
>>>   - support more than a single drive per adapter
>>>   - support index= option
>>>   - treat IF_AHCI the same as IF_IDE
>> Inhowfar?  Not obvious to me from the patch, or the diff patch v1.
>>>   - add is_ata() helper to match AHCI || IDE
>> Not addressed:
>> Once we switch to q35, if=ahci will become a redundant wart: to add
>> drives to the board's AHCI controller, you'll have to use if=ide.
>> if=ahci will create new controllers, which is generally not what you
>> want.  Ugh.
> Can we even make it the default with q35 as long as our AHCI controller
> doesn't also expose a legacy interface for compatibility?

Err, what else could we do with if=ide with q35?

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