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Date: Mon, 25 Jul 2011 07:47:51 -0500
From: Anthony Liguori <anthony@codemonkey.ws>
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Subject: Re: [Qemu-devel] [RESEND][PATCH v3] Generalize -machine command
 line option
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To: Alexander Graf <agraf@suse.de>
Cc: Peter Maydell <peter.maydell@linaro.org>, Jan Kiszka <jan.kiszka@siemens.com>, qemu-devel <qemu-devel@nongnu.org>, "Richard W.M. Jones" <rjones@redhat.com>, Ian Campbell <Ian.Campbell@eu.citrix.com>, Anthony PERARD <anthony.perard@citrix.com>

On 07/25/2011 07:44 AM, Alexander Graf wrote:
>
> On 25.07.2011, at 14:05, Peter Maydell wrote:
>
>> On 25 July 2011 12:48, Peter Maydell<peter.maydell@linaro.org>  wrote:
>>> For ARM you absolutely should not be relying on the default
>>> machine type (not least because it's an incredibly ancient
>>> dev board which nobody uses any more). An ARM kernel is
>>> generally fairly specific to the hardware platform being
>>> emulated, so you should know which machine you're intending
>>> to run on and specify it explicitly.
>>
>> In fact having thought about it a bit I'm going to go further
>> and say that the whole idea of a "default machine" is a rather
>> x86-centric idea -- most architectures don't really have a
>> single machine type that's used by just about everybody,
>> always has been, and isn't likely to become obsolete in the
>> future. So if we're reworking the command line API to
>> supersede "-M" then we shouldn't have a default at all.
>
> That's not exactly true. For PPC, everyone so far expects a Mac to pop up.

Except if you're running on an IBM Power box, then you definitely expect 
a pseries guest to pop up.

We really need to enable the default config file (yes, we have a default 
config file) can express the default machine.

Regards,

Anthony Liguori