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

From: Kevin Wolf
Subject: Re: [Qemu-devel] [PATCH v2] ahci: add -drive support
Date: Mon, 09 Jul 2012 11:11:25 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120605 Thunderbird/13.0

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?


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