From: Anthony Liguori <anthony@codemonkey.ws>
Subject: Re: [Qemu-devel] [PATCH] Add definitions for current cpu models..
Date: Thu, 28 Jan 2010 08:10:15 -0600
Message-ID: <4B619AC7.7010705@codemonkey.ws>
References: <4B549016.6090501@redhat.com> <4B586D4A.50207@codemonkey.ws> <4B5D5F84.4040507@redhat.com> <201001280919.03670.arnd@arndb.de> <1D6BE1B1-FCA1-4022-A98C-990A369F6E59@suse.de>
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Cc: Arnd Bergmann <arnd@arndb.de>, dlaor@redhat.com,
	"Przywara, Andre" <Andre.Przywara@amd.com>,
	KVM list <kvm@vger.kernel.org>,
	john cooper <john.cooper@redhat.com>, qemu-devel@nongnu.org,
	Chris Wright <chrisw@sous-sol.org>,
	Gerd Hoffmann <kraxel@redhat.com>
To: Alexander Graf <agraf@suse.de>
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On 01/28/2010 02:43 AM, Alexander Graf wrote:
> On 28.01.2010, at 09:19, Arnd Bergmann wrote:
>
>    
>> On Monday 25 January 2010, Dor Laor wrote:
>>      
>>> x86           qemu64
>>> x86           phenom
>>> x86         core2duo
>>> x86            kvm64
>>> x86           qemu32
>>> x86          coreduo
>>> x86              486
>>> x86          pentium
>>> x86         pentium2
>>> x86         pentium3
>>> x86           athlon
>>> x86             n270
>>>        
>> I think a really nice addition would be an autodetect option for those
>> users (e.g. desktop) that know they do not want to migrate the guest
>> to a lower-spec machine.
>>
>> That option IMHO should just show up as identical to the host cpu, with
>> the exception of features that are not supported in the guest.
>>      
> That's exactly what -cpu host is. IIRC it's the default now.
>    

Not yet.  Someone has to send a patch.

We can't enforce this wrt migration until someone implements migration 
of cpuid state.

Regards,

Anthony Liguori

> Alex
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