Re: [Qemu-devel] [PATCH v2 1/8] kvm: Set cpu_single_env only once

[Andreas Färber]

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Am 11.02.2012 14:07, schrieb Jan Kiszka:
> On 2012-02-11 14:06, Andreas Färber wrote:
>> Am 11.02.2012 13:43, schrieb Jan Kiszka:
>>> On 2012-02-11 12:49, Andreas Färber wrote:
>>>> Am 11.02.2012 12:25, schrieb Blue Swirl:
>>>>> I think using cpu_single_env is an indication of a
>>>>> problem, like poor code, layering violation or poor API
>>>>> (vmport). What is your use case?
>>>> 
>>>> I couldn't spot any in this series. Jan, note that any new
>>>> use of env or cpu_single_env will need to be redone when we
>>>> convert to QOM CPU.
>> 
>>> cpu_single_env should have nothing to do with QOM.
>> 
>> It does, cf. my patch series: Current CPU*State is being embedded
>> in the QOM object and most future code outside TCG will use a

Let me stress this:

>> CPU rather than CPUState pointer.

>> The reason is that CPUState is totally target-specific and does
>> not belong in common code.
> 
> So are the devices that depend on a current CPU pointer. You will
> have to provide something equivalent.

CPU base class v3:
http://patchwork.ozlabs.org/patch/139284/ (v4 coming up)

That doesn't prevent target-specific devices. Although Paolo does want
that to change wrt properties.

Andreas

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