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

[Thomas Huth <thuth@redhat.com>]

On 07.05.2018 07:37, Markus Armbruster wrote:
> Paolo Bonzini <pbonzini@redhat.com> writes:
> 
>> On 04/05/2018 19:01, Thomas Huth wrote:
>>> The -no-kvm* options are a remainder of the ancient "qemu-kvm"
>>> fork. They have never been officially documented in our qemu-doc,
>>> they have been marked as deprecated in the sources since a very
>>> long time, and we've marked them as deprecated in our qemu-doc
>>> since QEMU v2.10. So far I haven't seen any complaints that we
>>> should keep them, so it's time to remove these old parameters now.
>>>
>>> While I'm at it, this patch series also removes a left-over from
>>> the "-tdf" option (which has been removed with QEMU v2.12) and
>>> fixes a deficiency in the option parsing code that has been
>>> revealed by the remainder of the "-tdf" option.
>>>
>>> Thomas Huth (5):
>>>   qemu-options: Remove remainders of the -tdf option
>>>   qemu-options: Bail out on unsupported options instead of silently
>>>     ignoring them
>>>   qemu-options: Remove deprecated -no-kvm-pit-reinjection
>>>   qemu-options: Remove deprecated -no-kvm-irqchip
>>>   qemu-options: Remove deprecated -no-kvm
>>
>> 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? ;-)

 Thomas