Re: [PATCH] exit if we fail to initialize kvm

[Jan Kiszka <jan.kiszka@siemens.com>]

Alexander Graf wrote:
> Avi Kivity wrote:
>> On 07/29/2009 01:17 PM, Jan Kiszka wrote:
>>> I just wonder now if/when qemu-kvm will switch over to the
>>> kvm-by-default-off policy of upstream?
>>>    
>> That will surely inconvenience/surprise a lot of users.
>>
>> A migration path could be:
>>
>> - add -accel
>> - start warning when -accel is not used, encouraging people to use -accel
>> - time passes
>> - switch default to tcg (maybe unless invoked with kvm in argv[0])
>> - time passes
>> - remove warning
>>
> 
> I would prefer:
> 
> - add -accel (default to kvm)
> - give a message to use -accel tcg when the user wants tcg
> - make -accel go kvm,kqemu,tcg in qemu upstream

Upstream just dropped the behavior '-accel kqemu,tcg', so I'm not sure
if this is desired to return (though I'm surely not comparing kvm to
kqemu here).

> - have distros / management tools decide which accel they like

That's likely the key: explicit -accel.

Jan

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