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From: Peter Maydell <peter.maydell@linaro.org>
Date: Fri, 26 Jan 2018 18:04:54 +0000
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Subject: Re: [Qemu-devel] [Qemu-arm] [PATCH 0/6] arm: support -cpu max (and
 gic-version=max)
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To: Eduardo Habkost <ehabkost@redhat.com>
Cc: qemu-arm <qemu-arm@nongnu.org>, QEMU Developers <qemu-devel@nongnu.org>, "Richard W . M . Jones" <rjones@redhat.com>, "patches@linaro.org" <patches@linaro.org>

On 26 January 2018 at 17:54, Eduardo Habkost <ehabkost@redhat.com> wrote:
> On Fri, Jan 26, 2018 at 11:02:24AM +0000, Peter Maydell wrote:
>> None of those are things we'd want to expose to the user, really
>> (except maybe 'cfgend'): they're all intended for the QEMU board
>> or SoC code that needs to configure and wire the CPU up. Ideally
>> there'd be a mechanism for screening them out of the -cpu option
>> list.
>>
>
> Yeah, it's becoming clearer to me that we need to address this
> better than with a simple "x-" prefix convention.
>
> If we remove the link and child properties, we have:
>
> midr (uint32)
> mp-affinity (uint64)
> psci-conduit (uint32)
> reset-hivecs (bool)
> node-id (int32)
> start-powered-off (bool)
> cfgend (bool)
>
> I wonder how many of them aren't useful with -cpu but might be
> useful with -device in the future.

It would require a lot of work to be able to create an Arm CPU
with -device -- there's no way at the moment to wire it up
to the interrupt controller...

thanks
-- PMM