From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:42874) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SpEzE-0005Ft-V2 for qemu-devel@nongnu.org; Thu, 12 Jul 2012 04:43:12 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SpEyv-0006zg-Vi for qemu-devel@nongnu.org; Thu, 12 Jul 2012 04:43:00 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43302) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SpEyv-0006zQ-NW for qemu-devel@nongnu.org; Thu, 12 Jul 2012 04:42:41 -0400 Message-ID: <4FFE8DFE.8090606@redhat.com> Date: Thu, 12 Jul 2012 10:42:38 +0200 From: Gerd Hoffmann MIME-Version: 1.0 References: <1340714974-25489-1-git-send-email-agraf@suse.de> <85304819-A359-491E-AF7A-B8D6A1DE15DC@suse.de> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v2] ahci: add -drive support List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Markus Armbruster Cc: Kevin Wolf , Alexander Graf , qemu-devel Hi, > 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. cheers, Gerd