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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: Thu, 12 Jul 2012 10:42:38 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.5) Gecko/20120601 Thunderbird/10.0.5


> What I'd like to avoid is casual users setting up new guests with our
> shiny new q35 board getting their IDE drives connected to some slow, old
> controller just because they haven't discovered that if=ide doesn't cut
> it anymore, and they need to use if=ahci now.

That will not work.  ahci has no such thing as master/slave.  Each ahci
port (modeled as ide bus in qemu for ata emulation code reuse reasons)
accepts one drive only.

Thus -drive if=ide,bus=x,unit=1,file=... will not work with ahci.


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