Re: [Qemu-devel] [PATCH v2 0/5] Removal of deprecated -no-kvm* options

[Paolo Bonzini]

On 07/05/2018 09:56, Markus Armbruster wrote:
>>>> I'm not that sure anymore about -no-kvm.  It can come in handy for
>>>> distros (*cough* RHEL *cough) that only ship a qemu-kvm binary with
>>>> default accelerator "-machine accel=kvm:tcg".
>>>>
>>>> Yeah, "-accel tcg" is only a few characters later, but it is a
>>>> relatively recent addition.
>>>
>>> 2012 is "relatively recent" in the alternate RHEL universe, perhaps :)
>>
>> That was the "-machine accel=tcg", but Paolo was rather talking about
>> "-accel tcg", which has been added last year. Yes, we've got three (!)
>> ways of dealing with accelerators now: "-M accel=", "-accel" and
>> "-enable-kvm + -no-kvm". We're very userfriendly, aren't we? ;-)
>
> Ugh.  Apparently, vl.c still is a playground without adult supervision.

I'm not sure I get it... "-accel" was added in order to provide
accelerator options.  If anything, "-machine accel" (added back in 2010)
is the one that makes little sense these days.

Paolo